IP Switching Commands: show adjacency through show route-map ipc

Table Of Contents

show adjacency

show cef drop

show cef events

show cef interface policy-statistics

show cef interface

show cef linecard

show cef not-cef-switched

show cef timers

show interface stats

show interfaces switching

show ip cache

show ip cef adjacency

show ip cef events

show ip cef exact-route

show ip cef inconsistency

show ip cef traffic prefix-length

show ip cef vrf

show ip cef

show ip mds forwarding

show ip mds interface

show ip mds stats

show ip mds summary

show pxf accounting

show pxf crash

show pxf feature cef vrf

show pxf feature cef

show pxf feature nat

show pxf interface

show route-map ipc

show adjacency

To display information about the Cisco Express Forwarding (CEF) adjacency table or the hardware Layer 3-switching adjacency table, use the show adjacency command in user EXEC or privileged EXEC mode.

show adjacency [summary [interface interface-number]] | [prefix] [interface-type interface-number] [connectionid id] [link {ipv4 | ipv6 | mpls}] [detail]
Syntax Description

summary

(Optional) Displays a summary of CEF adjacency information.

interface

(Optional) Interface type.

interface-number

(Optional) Specifies the module and port number. Valid values depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 2 to 13, and valid values for the port number are from 1 to 48.

For line cards, you must specify the linecard if_number (interface number). Use the show cef interface command to obtain linecard if_numbers.

null interface-number specifies the null interface; the valid value is 0.

port-channel number specifies an Ethernet channel of interfaces; valid values are a maximum of 64 values from 1 to 256.

prefix

(Optional) Specifies an IP address or IPv6 address.

connectionid id

(Optional) Specifies the client connection identification number.

link {ipv4 | ipv6 | mpls}

(Optional) Specifies the link type (IP, IPv6, or MPLS traffic) of the adjacency.

detail

(Optional) Displays the protocol detail and timer information.

Defaults

This command has no default settings.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.2GS

This command was introduced.

11.1CC

Multiple platform support was added.

12.0(7)XE

Support was added for the Cisco 7600 series routers.

12.1(1)E

Support for the Cisco 7600 series routers was integrated into Cisco IOS Release 12.1(1)E.

12.1(3a)E3

The number of valid values for port-channel number changed.

12.1(5c)EX

This command was modified to include Layer 3 information.

12.1(11b)E

The pos, atm, and ge-wan keywords were added.

12.2(8)T

The detail keyword output was modified to show the epoch value for each entry of the adjacency table.

The summary keyword output was modified to show the table epoch for the adjacency table.

12.2(14)SX

Support for this command was introduced on the Supervisor Engine 720.

12.2(25)S

This command was integrated into Cisco IOS Release 12.2(25)S and updated with new keywords.

Usage Guidelines

This command is used to verify that an adjacency exists for a connected device, that the adjacency is valid, and that the MAC header rewrite string is correct.

You can use any combination of the prefix, interface, connectionid id, and link {ipv4 | ipv6 | mpls} keywords and arguments (in any order) as a filter to enable the display of a specified subset of adjacencies.

The information displayed by the show adjacency commands includes the following:

•Protocol

•Interface

•Type of routed protocol traffic using this adjacency

•Next hop address

•Adjacency source (for example, ARP or ATM Map)

•Encapsulation prepended to packet switched through this adjacency

•Chain of output chain elements applied to packets after an adjacency

•Packet and byte counts

•HA epoch and summary event epoch

Examples

The following example shows how to display adjacency information:

Router# show adjacency

Protocol Interface Address
IP FastEthernet2/3 172.20.52.1(3045)
IP FastEthernet2/3 172.20.52.22(11)
Router#

The following is sample output from the show adjacency summary command:

Router# show adjacency summary

Adjacency table has 7 adjacencies:
each adjacency consumes 368 bytes (4 bytes platform extension)
6 complete adjacencies
1 incomplete adjacency
4 adjacencies of linktype IP
4 complete adjacencies of linktype IP
0 incomplete adjacencies of linktype IP
0 adjacencies with fixups of linktype IP
2 adjacencies with IP redirect of linktype IP
3 adjacencies of linktype IPV6
2 complete adjacencies of linktype IPV6
1 incomplete adjacency of linktype IPV6

Adjacency database high availability:
Database epoch: 8 (7 entries at this epoch)

Adjacency manager summary event processing:
Summary events epoch is 52
Summary events queue contains 0 events (high water mark 113 events)
Summary events queue can contain 49151 events
Adj last sourced field refreshed every 16384 summary events
RP adjacency component enabled

The following is sample output from the show adjacency detail command:

Router# show adjacency detail

Protocol Interface Address
IP Serial5/0/0/1:1 point2point(7)
0 packets, 0 bytes
0F000800
CEF expires: 00:02:09
refresh: 00:00:09
Epoch: 14
IP Serial5/0/1/1:1 point2point(7)
0 packets, 0 bytes
0F000800
CEF expires: 00:02:09
refresh: 00:00:09
Epoch: 14
Router#

The following example shows how to display adjacency information for a specific interface:

Router# show adjacency ethernet 3/0

Protocol Interface Address
IPV6 Ethernet3/0 FE80::20C:CFFF:FEDF:6854(2)
Router#

The following example shows how to display protocol detail and timer adjacency information for IPv6 links for a specific interface:

Router# show adjacency ethernet 3/0 link ipv6 detail

Protocol Interface Address
IPV6 Ethernet3/0 FE80::20C:CFFF:FEDF:6854(2)
0 packets, 0 bytes
epoch 0
sourced in sev-epoch 16
Encap length 14
000CCFDF6854000CCFF9485486DD
IPv6 ND
Router#

Table 1 describes the significant fields shown in the displays.

Table 1 show adjacency Field Descriptions

Field

Description

Protocol

Routed protocol to which the adjacency is related.

Interface

Outgoing interface associated with the adjacency.

Address

The address can represent one of these addresses:

•Next-hop address

•Point-to-point address

The number (in parentheses) that follows this field indicates the number of internal references to the adjacency.

Table epoch

Table epoch value at the time when the adjacency was last modified.

Related Commands

Command

Description

clear adjacency

Clears the CEF adjacency table.

clear arp-cache

Deletes all dynamic entries from the ARP cache.

debug adjacency

Enables the display of information about the adjacency database.

show mls cef adjacency

Displays information about the hardware Layer 3 switching adjacency node.

show cef drop

To display a list of which packets each line card dropped, use the show cef drop command in user EXEC or privileged EXEC mode.

show cef drop
Syntax Description

This command has no arguments or keywords.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.2 GS

This command was introduced to support the Cisco 12012 Internet router.

11.1 CC

Multiple platform support was added.

12.0(22)S

The display output for this command was modified to include support for Cisco Express Forwarding for IPv6 (CEFv6) and distributed CEF for IPv6 (dCEFv6) packets.

12.0(23)S

This command was integrated into Cisco IOS Release 12.0(23)S.

12.2(13)T

This command was integrated into Cisco IOS Release 12.2(13)T. Previously there was a show cef command, and drop was a keyword of that command.

12.2(14)S

This command was integrated into Cisco IOS Release 12.2(14)S.

Usage Guidelines

A line card might drop packets because of encapsulation failure, absence of route information, or absence of adjacency information.

A packet is sent to a different switching path (punted) because CEF does not support the encapsulation or feature, the packet is destined for the router, or the packet has IP options, such as time stamp and record route. IP options are process switched.

Note If CEFv6 or dCEFv6 is enabled globally on the router, the show cef drop command displays IPv6 CEF counter information and IPv4 CEF counter information. If CEFv6 or dCEFv6 is not enabled globally on the router, the command displays only IPv4 CEF counter information.

Examples

The following is sample output from the show cef drop command:

Router# show cef drop

CEF Drop Statistics
Slot Encap_fail Unresolved Unsupported No_route No_adj ChksumErr
RP 4 89 0 4 0 0
1 0 0 0 0 0 0
2 0 0 5 0 0 5
IPv6 CEF Drop Statistics
Slot Encap_fail Unresolved Unsupported No_route No_adj
RP 2 33 0 2 0
1 0 0 3 0 0
2 0 0 0 0 0

Table 2 describes the significant fields shown in the display.

Table 2 show cef drop Field Descriptions

Field

Description

Slot

The slot number on which the packets were received.

Encap_fail

Indicates the number of packets dropped after exceeding the limit for packets punted to the processor due to missing adjacency information (CEF throttles packets passed up to the process level at a rate of one packet per second).

Unresolved

Indicates the number of packets dropped due to an unresolved prefix in the Forwarding Information Base (FIB) table.

Unsupported

Indicates the number of packets fast-dropped by CEF (drop adjacency).

No_route

Indicates the number of packets dropped due to a missing prefix in the FIB table.

No_adj

Indicates the number of packets dropped due to incomplete adjacency.

ChksumErr

Indicates the number of IPv4 packets received with a checksum error.

Note This field is not supported for IPv6 packets.

Related Commands

Command

Description

show cef interface

Displays CEF-related interface information.

show ipv6 cef

Displays entries in the IPv6 FIB.

show cef events

To display a list of events internal to the CEF process, use the show cef events command in user EXEC or privileged EXEC mode.

show cef events
Syntax Description

This command has no arguments or keywords.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.0(23)S

This command was introduced.

12.0(24)S

This command was integrated into Cisco IOS Release 12.0(24)S.

12.2(13)T

This command was integrated into Cisco IOS Release 12.2(13)T.

Examples

The following is sample output from the show cef events command:

Router# show cef events

CEF events (14/0 recorded/ignored)

Time Event Details
+00:00:00.000 SubSys ipfib init
+00:00:00.000 SubSys ipfib_ios init
+00:00:00.000 SubSys ipfib_util init
+00:00:00.000 SubSys adj_ios init
+00:00:00.000 SubSys ipfib_les init
+00:00:01.272 Flag FIB enabled set to yes
+00:00:01.272 Flag FIB switching enabled set to yes
+00:00:01.272 GState CEF enabled
+00:00:02.872 Process Background created
+00:00:02.872 Flag FIB running set to yes
+00:00:02.872 Process Background event loop enter
+00:00:02.912 Flag FIB switching running set to yes
+00:00:02.920 Process Scanner created
+00:00:02.920 Process Scanner event loop enter
Table 3 describes the significant fields shown in the display.

Table 3 show cef events Field Descriptions

Field

Description

Time

Time that the event occurred.

Event

Type of event that occurred.

Details

Detailed description of the event.

Related Commands

Command

Description

show cef drop

Displays a list of which packets each line card dropped.

show cef interface

Displays CEF-related interface information.

show cef linecard

Displays CEF-related interface information by line card.

show cef interface policy-statistics

To display Cisco Express Forwarding (CEF) policy statistical information for a specific interface or for all interfaces, use the show cef interface policy-statistics command in user EXEC or privileged EXEC mode.

show cef interface [type number] policy-statistics [input | output]
Syntax Description

type number

(Optional) Interface type and number.

No space is required between the interface type and number.

input

(Optional) Displays Border Gateway Protocol (BGP) accounting policy statistics for traffic that is traveling through an input interface.

output

(Optional) Displays BGP accounting policy statistics for traffic that is traveling through an output interface.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.0(9)S

This command was introduced on the Cisco 12000 series Internet routers.

12.0(14)ST

This command was integrated into Cisco IOS Release 12.0(14)ST, and the statistics keyword was added.

12.2(13)T

This command was integrated into Cisco IOS Release 12.2(13)T.

12.0(22)S

The input and output keywords were added.

The display output was modified to include support for CEF for IPv6 (CEFv6) and distributed (dCEFv6) interface information. Output fields that support Border Gateway Protocol (BGP) policy accounting were added for the Cisco 7200 series and Cisco 7500 series platforms.

12.3(4)T

Changes to this command was integrated into Cisco IOS Release 12.3(4)T.

12.2(14)S

This command was integrated into Cisco IOS Release 12.2(14)S.

12.2(25)S

The internal keyword was added.

Usage Guidelines

This command is available only on distributed switching platforms.

Examples

The following is sample output from the show cef interface policy-statistics command:

Router# show cef interface policy-statistics

POS7/0 is up (if_number 8)
Index Packets Bytes

1 0 0
2 0 0
3 50 5000
4 100 10000
5 100 10000
6 10 1000
7 0 0
8 0 0

The following is sample output from the show cef interface policy-statistics command showing policy statistics for Ethernet interface 1/0:

Router# show cef interface ethernet 1/0 policy-statistics

Ethernet1/0 is up (if_number 3)
Corresponding hwidb fast_if_number 3
Corresponding hwidb firstsw->if_number 3
Index Packets Bytes
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
8 0 0

The following is sample output from the show cef interface policy-statistics command showing policy statistics for Fast Ethernet interface 1/0/0 with the policy accounting based on input traffic:

Router# show cef interface fastethernet 1/0/0 policy-statistics input

FastEthernet1/0/0 is up (if_number 6)
Corresponding hwidb fast_if_number 6
Corresponding hwidb firstsw->if_number 6
BGP based Policy accounting on input is enabled
Index Packets Bytes
1 9999 999900
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
8 0 0
9 0 0
10 0 0
11 0 0
12 0 0
13 0 0
14 0 0
15 0 0
16 0 0
17 0 0
18 0 0
19 0 0
20 0 0
21 0 0
22 0 0
23 0 0
24 0 0
25 0 0
26 0 0
27 0 0
28 0 0
29 0 0
30 0 0
31 0 0
32 0 0
33 0 0
34 1234 123400
35 0 0
36 0 0
37 0 0
38 0 0
39 0 0
40 0 0
41 0 0
42 0 0
43 0 0
44 0 0
45 1000 100000
46 0 0
47 0 0
48 0 0
49 0 0
50 0 0
51 0 0
52 0 0
53 0 0
54 5123 1198782
55 0 0
56 0 0
57 0 0
58 0 0
59 0 0
60 0 0
61 0 0
62 0 0
63 0 0
64 0 0

The following is sample output from the show cef interface policy-statistics command showing policy statistics for serial interface 1/1/2 with the policy accounting based on output traffic:

Router# show cef interface serial 1/1/2 policy-statistics output

Serial1/1/2 is up (if_number 9)
Corresponding hwidb fast_if_number 9
Corresponding hwidb firstsw->if_number 9
BGP based Policy accounting on output is enabled
Index Packets Bytes
1 9999 999900
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
8 0 0
9 0 0
10 0 0
11 0 0
12 0 0
13 0 0
14 0 0
15 0 0
16 0 0
17 0 0
18 0 0
19 0 0
20 0 0
21 0 0
22 0 0
23 0 0
24 0 0
25 0 0
26 0 0
27 0 0
28 0 0
29 0 0
30 0 0
31 0 0
32 0 0
33 0 0
34 1234 123400
35 0 0
36 0 0
37 0 0
38 0 0
39 0 0
40 0 0
41 0 0
42 0 0
43 0 0
44 0 0
45 1000 100000
46 0 0
47 0 0
48 0 0
49 0 0
50 0 0
51 0 0
52 0 0
53 0 0
54 5123 1198782
55 0 0
56 0 0
57 0 0
58 0 0
59 0 0
60 0 0
61 0 0
62 0 0
63 0 0
64 0 0

Table 4 describes the significant fields shown in the display.

Table 4 show cef interface policy-statistics Field Descriptions

Field

Description

Index

Traffic index set with the route-map command.

Packets

Number of packets switched that match the index definition.

Bytes

Number of bytes switched matching the index definition.

Related Commands

Command

Description

route-map (IP)

Defines the conditions for redistributing routes from one routing protocol to another, or enables policy routing.

show cef drop

Displays which packets the line cards dropped, or displays which packets were not express forwarded.

show cef linecard

Displays CEF-related interface information by line card.

show cef interface

To display detailed Cisco Express Forwarding (CEF) information for a specified interface or for all interfaces, use the show cef interface command in user EXEC or privileged EXEC mode.

show cef interface [type number] [statistics | detail | internal | brief | policy-statistics [input | output]]
Syntax Description

type number

(Optional) Interface type and number.

No space is required between the interface type and number.

statistics

(Optional) Displays switching statistics for an interface or interfaces.

detail

(Optional) Displays detailed CEF information for the specified interface type and number.

internal

(Optional) Displays internal CEF interface status and configuration.

brief

(Optional) Summarizes the CEF interface state.

policy-statistics

(Optional) Displays Border Gateway Protocol (BGP) policy statistical information for a specific interface or for all interfaces.

input

(Optional) Displays BGP accounting policy statistics for traffic that is traveling through an input interface.

output

(Optional) Displays BGP accounting policy statistics for traffic that is traveling through an output interface.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.2 GS

This command was introduced to support the Cisco 12012 Internet router.

11.1 CC

Support for multiple platforms was added.

12.0(14)ST

This command was integrated into Cisco IOS Release 12.0(14)ST, and the statistics keyword was added.

12.2(2)T

This command was integrated into Cisco IOS Release 12.2(2)T, and the detail keyword was added.

12.2(13)T

The policy-statistics keyword was added.

12.0(22)S

The input and output keywords were added.

The display output was modified to include support for CEF for IPv6 (CEFv6) and distributed (dCEFv6) interface information. Output fields that support Border Gateway Protocol (BGP) policy accounting were added for the Cisco 7200 series and Cisco 7500 series platforms.

12.3(4)T

Changes to this command were integrated into Cisco IOS Release 12.3(4)T.

12.2(14)S

This command was integrated into Cisco IOS Release 12.2(14)S.

12.2(25)S

The internal keyword was added.

Usage Guidelines

You can use this command to display the detailed CEF status for all interfaces.

Values entered for the type and number arguments display CEF status information for the specified interface type and number.

The policy-statistics, input, and output keywords are available only on distributed switching platforms.

Examples

The following example shows how to display a summary of CEF information for an interface named Ethernet 3/0:

Router# show cef interface ethernet 3/0 brief

Interface IP-Address Status Switching
Ethernet3/0 10.0.212.6 up CEF
Router#

The following is sample output from the show cef interface command for Fast Ethernet interface 1/0/0 with BGP policy accounting configured for input traffic:

Router# show cef interface fastethernet 1/0/0

FastEthernet1/0/0 is up (if_number 6)
Corresponding hwidb fast_if_number 6
Corresponding hwidb firstsw->if_number 6
Internet address is 10.1.1.1/24
ICMP redirects are always sent
Per packet load-sharing is disabled
IP unicast RPF check is disabled
Inbound access list is not set
Outbound access list is not set
IP policy routing is disabled
BGP based policy accounting on input is enabled
BGP based policy accounting on output is disabled
Hardware idb is FastEthernet1/0/0 (6)
Software idb is FastEthernet1/0/0 (6)
Fast switching type 1, interface type 18
IP Distributed CEF switching enabled
IP Feature Fast switching turbo vector
IP Feature CEF switching turbo vector
Input fast flags 0x100, Output fast flags 0x0, Flags 0x0
ifindex 7(7)
Slot 1 Slot unit 0 VC -1
Transmit limit accumulator 0xE8001A82 (0xE8001A82)
IP MTU 1500

The following is sample output from the show cef interface detail command for Ethernet interface 1/0/0:

Router# show cef interface ethernet 1/0/0 detail

FastEthernet1/0/0 is up (if_number 6)
Corresponding hwidb fast_if_number 6
Corresponding hwidb firstsw->if_number 6
Internet address is 10.1.1.1/24
ICMP redirects are always sent
Per packet load-sharing is disabled
IP unicast RPF check is disabled
Inbound access list is not set
Outbound access list is not set
IP policy routing is disabled
BGP based policy accounting on input is enabled
BGP based policy accounting on output is disabled
Hardware idb is FastEthernet1/0/0 (6)
Software idb is FastEthernet1/0/0 (6)
Fast switching type 1, interface type 18
IP Distributed CEF switching enabled
IP Feature Fast switching turbo vector
IP Feature CEF switching turbo vector
Input fast flags 0x100, Output fast flags 0x0, Flags 0x0
ifindex 7(7)
Slot 1 Slot unit 0 VC -1
Transmit limit accumulator 0xE8001A82 (0xE8001A82)
IP MTU 1500

The following is sample output from the show cef interface Null 0 detail command:

Router# show cef interface null 0 detail

Null0 is up (if_number 1)
Corresponding hwidb fast_if_number 1
Corresponding hwidb firstsw->if_number 1
Internet Protocol processing disabled
Interface is marked as nullidb
Packets switched to this interface on linecard are dropped to next slow path
Hardware idb is Null0
Fast switching type 13, interface type 0
IP CEF switching enabled
IP Feature CEF switching turbo vector
Input fast flags 0x0, Output fast flags 0x0
ifindex 0(0)
Slot -1 Slot unit -1 VC -1
Transmit limit accumulator 0x0 (0x0)
  IP MTU 1500

The following is sample output for internal CEF interface status and configuration for the Ethernet 3/1 interface:

Router# show cef interface ethernet 3/1 internal

Ethernet3/1 is up (if_number 13)
Corresponding hwidb fast_if_number 13
Corresponding hwidb firstsw->if_number 13
Internet address is 10.0.212.6/24
ICMP redirects are always sent
Per packet load-sharing is disabled
IP unicast RPF check is disabled
Inbound access list is not set
Outbound access list is not set
IP policy routing is disabled
BGP based policy accounting on input is disabled
BGP based policy accounting on output is disabled
Hardware idb is Ethernet3/1
Fast switching type 1, interface type 63
IP CEF switching enabled
IP CEF switching turbo vector
IP CEF turbo switching turbo vector
IP prefix lookup IPv4 mtrie 8-8-8-8 optimized
Input fast flags 0x0, Output fast flags 0x0
ifindex 11(11)
Slot 3 Slot unit 0 VC -1
Transmit limit accumulator 0x0 (0x0)
IP MTU 1500
Subblocks:
IPv6: enabled 1 unreachable FALSE redirect TRUE mtu 1500 flags 0x0
link-local address is FE80::20C:CFFF:FEF9:4854
Global unicast address(es):
10:6:6:6:20C:CFFF:FEF9:4854, subnet is 10:6:6:6::/64 [EUI]
IPv4: Internet address is 10.0.212.6/24
Broadcast address 255.255.255.255
Per packet load-sharing is disabled
IP MTU 1500

Table 5 describes the significant fields shown in the displays.

Table 5 show cef interface Field Descriptions

Field

Description

FastEthernet1/0/0 is up

Indicates type, number, and status of the interface.

Internet address is

Internet address of the interface.

ICMP redirects are always sent

Indicates how packet forwarding is configured.

Per packet load-sharing is disabled

Indicates status of load sharing on the interface.

IP unicast RPF check is disabled

Indicates status of IP unicast Reverse Path Forwarding (RPF) check on the interface.

Inbound access list is not set

Indicates the number or name of the inbound access list if one is applied to this interface. Also indicates whether list is set or not.

Outbound access list is not set

Indicates the number or name of the outbound access list if one is applied to this interface. Also indicates whether list is set or not.

IP policy routing is disabled

Indicates the status of IP policy routing on the interface.

BGP based policy accounting on input is enabled

Indicates the status of BGP policy accounting on the input interface.

BGP based policy accounting on output is disabled

Indicates the status of BGP policy accounting on the output interface.

Hardware idb is Ethernet1/0/0

Interface type and number configured.

Fast switching type

Used for troubleshooting; indicates switching mode in use.

Interface type

Indicates interface type.

IP Distributed CEF switching enabled

Indicates whether distributed CEF is enabled on this interface. (Cisco 7500 and 12000 series Internet routers only.)

IP Feature Fast switching turbo vector

Indicates IP fast switching type configured.

IP Feature CEF switching turbo vector

Indicates IP feature CEF switching type configured.

Input fast flags

Indicates the input status of various switching features:

•0x0001 (input Access Control List [ACL] enabled)

•0x0002 (policy routing enabled)

•0x0004 (input rate limiting)

•0x0008 (MAC/Prec accounting)

•0x0010 (DSCP/PREC/QOS GROUP)

•0x0020 (input named access lists)

•0x0040 (NAT enabled on input)

•0x0080 (crypto map on input)

•0x0100 (QPPB classification)

•0x0200 (inspect on input)

•0x0400 (input classification)

•0x0800 (casa input enable)

•0x1000 (Virtual Private Network [VPN] enabled on a swidb)

•0x2000 (input idle timer enabled)

•0x4000 (unicast Reverse Path Forwarding [RPF] check)

•0x8000 (per-address ACL enabled)

•0x10000 (deaggregating a packet)

•0x20000 (GPRS enabled on input)

•0x40000 (URL RenDezvous)

•0x80000 (QoS classification)

•0x100000 (FR switching on interface)

•0x200000 (WCCP redirect on input)

•0x400000 (input classification)

Output fast flags

Indicates the output status of various switching features, as follows:

•0x0001 (output ACL enabled)

•0x0002 (IP accounting enabled)

•0x0004 (WCC redirect enabled interface)

•0x0008 (rate limiting)

•0x0010 (MAC/Prec accounting)

•0x0020 (DSCP/PREC/QOS GROUP)

•0x0040 (D-QOS classification)

•0x0080 (output named access lists)

•0x0100 (NAT enabled on output)

•0x0200 (TCP intercept enabled)

•0x0400 (crypto map set on output)

•0x0800 (output firewall)

•0x1000 (RSVP classification)

•0x2000 (inspect on output)

•0x4000 (QoS classification)

•0x8000 (QoS preclassification)

•0x10000 (output stile)

ifindex 7/(7)

Indicates the SNMP ifindex for this interface.

Slot 1 Slot unit 0 VC -1

The slot number and slot unit.

Transmit limit accumulator

Indicates the maximum number of packets allowed in the transmit queue.

IP MTU

The MTU size set on the interface.

The following is sample output from the show cef interface command using the policy-statistics keyword:

Router# show cef interface policy-statistics

POS7/0 is up (if_number 8)
Index Packets Bytes

1 0 0
2 0 0
3 50 5000
4 100 10000
5 100 10000
6 10 1000
7 0 0
8 0 0

The following is sample output from the show cef interface command using the policy-statistics keyword, and it shows policy statistics for Ethernet interface 1/0:

Router# show cef interface ethernet 1/0 policy-statistics

Ethernet1/0 is up (if_number 3)
Corresponding hwidb fast_if_number 3
Corresponding hwidb firstsw->if_number 3
Index Packets Bytes
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
8 0 0

The following is sample output from the show cef interface command using the policy-statistics keyword, and it shows policy statistics for Fast Ethernet interface 1/0/0 with the policy accounting based on input traffic:

Router# show cef interface fastethernet 1/0/0 policy-statistics input

FastEthernet1/0/0 is up (if_number 6)
Corresponding hwidb fast_if_number 6
Corresponding hwidb firstsw->if_number 6
BGP based Policy accounting on input is enabled
Index Packets Bytes
1 9999 999900
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
8 0 0
9 0 0
10 0 0
11 0 0
12 0 0
13 0 0
14 0 0
15 0 0
16 0 0
17 0 0
18 0 0
19 0 0
20 0 0
21 0 0
22 0 0
23 0 0
24 0 0
25 0 0
26 0 0
27 0 0
28 0 0
29 0 0
    30 0 0
    31 0 0
32 0 0
33 0 0
34 1234 123400
35 0 0
36 0 0
37 0 0
38 0 0
39 0 0
40 0 0
41 0 0
42 0 0
43 0 0
44 0 0
45 1000 100000
46 0 0
47 0 0
48 0 0
49 0 0
50 0 0
51 0 0
52 0 0
53 0 0
54 5123 1198782

The following is sample output from the show cef interface command using the policy-statistics keyword, and it shows policy statistics for serial interface 1/1/2 with the policy accounting based on output traffic:

Router# show cef interface serial 1/1/2 policy-statistics output

Serial1/1/2 is up (if_number 9)
Corresponding hwidb fast_if_number 9
Corresponding hwidb firstsw->if_number 9
BGP based Policy accounting on output is enabled
Index Packets Bytes
1 9999 999900
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
8 0 0
9 0 0
10 0 0
11 0 0
12 0 0
13 0 0
14 0 0
15 0 0
16 0 0
17 0 0
18 0 0
    19 0 0
20 0 0
21 0 0
22 0 0
23 0 0
24 0 0
25 0 0
26 0 0
27 0 0
28 0 0
29 0 0
30 0 0
31 0 0
32 0 0
33 0 0
34 1234 123400
35 0 0
36 0 0
37 0 0
38 0 0
39 0 0
40 0 0
41 0 0
42 0 0
43 0 0
44 0 0
45 1000 100000
46 0 0
47 0 0
48 0 0
49 0 0
50 0 0
51 0 0
52 0 0
53 0 0
54 5123 1198782
    55 0 0
56 0 0
57 0 0
58 0 0
59 0 0
60 0 0
61 0 0
62 0 0
63 0 0
64 0 0

Table 4 describes the significant fields shown in the display.

Table 6 show cef interface policy-statistics Field Descriptions

Field

Description

Index

Traffic index set with the route-map command.

Packets

Number of packets switched that match the index definition.

Bytes

Number of bytes switched matching the index definition.

Related Commands

Command

Description

clear cef linecard

Clears CEF information from line cards.

route-map (IP)

Defines the conditions for redistributing routes from one routing protocol to another, or enables policy routing.

show cef

Displays information about packets forwarded by CEF.

show cef drop

Displays which packets the line cards dropped, or displays which packets were not express forwarded.

show cef linecard

Displays CEF-related interface information by line card.

show cef linecard

To display Cisco Express Forwarding (CEF)-related information by line card, use the show cef linecard command in user EXEC or privileged EXEC mode.

show cef linecard [slot-number] [detail] [internal]
Syntax Description

slot-number

(Optional) Slot number containing the line card about which to display CEF-related information. When you omit this argument, information about all line cards is displayed.

detail

(Optional) Displays detailed CEF information for the specified line card.

internal

(Optional) Displays internal CEF information for the specified line card.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.2 GS

This command was introduced to support the Cisco 12012 Internet router.

11.1 CC

Multiple platform support was added.

12.0(10)S

Output display was changed.

12.1(2)T

This command was integrated into Cisco IOS Release 12.1(2)T.

12.0(22)S

This command was integrated into Cisco IOS Release 12.0(22)S, and the display output was modified to include support for CEF for IPv6 (CEFv6) and distributed CEFv6 (dCEFv6) line card information.

12.2(13)T

The display output modifications made in Cisco IOS Release 12.0(22)S were integrated into Cisco IOS Release 12.2(13)T.

12.2(14)S

This command was integrated into Cisco IOS release 12.2(14)S.

Usage Guidelines

This command is available only on distributed switching platforms.

When you omit the slot-number argument, information about all line cards is displayed. When you omit the slot-number argument and include the detail keyword, detailed information is displayed for all line cards. When you omit the slot-number argument and include the internal keyword, detailed internal information is displayed for all line cards.When you omit all keywords and arguments, the show cef linecard command displays important information about all line cards in table format.

Examples

The following is sample output from the show cef linecard command. The command displays information for all line cards in table format.

Router# show cef linecard

Slot MsgSent XDRSent Window LowQ MedQ HighQ Flags
0 6 95 24 0 0 0 up
1 6 95 24 0 0 0 up
VRF Default-table, version 8, 6 routes
Slot Version CEF-XDR I/Fs State Flags
0 7 4 8 Active up, sync
1 7 4 10 Active up, sync

The following is sample output from the show cef linecard detail command for all line cards:

Router# show cef linecard detail

CEF linecard slot number 0, status up
Sequence number 4, Maximum sequence number expected 28, Seq Epoch 2
Send failed 0, Out Of Sequence 0, drops 0
Linecard CEF reset 0, reloaded 1
95 elements packed in 6 messages(3588 bytes) sent
69 elements cleared
linecard in sync after reloading
0/0/0 xdr elements in LowQ/MediumQ/HighQ
11/9/69 peak elements on LowQ/MediumQ/HighQ
Input packets 0, bytes 0
Output packets 0, bytes 0, drops 0
CEF Table statistics:
Table name Version Prefix-xdr Status
Default-table 7 4 Active, up, sync
CEF linecard slot number 1, status up
Sequence number 4, Maximum sequence number expected 28, Seq Epoch 2
Send failed 0, Out Of Sequence 0, drops 0
Linecard CEF reset 0, reloaded 1
95 elements packed in 6 messages(3588 bytes) sent
69 elements cleared
linecard in sync after reloading
0/0/0 xdr elements in LowQ/MediumQ/HighQ
11/9/69 peak elements on LowQ/MediumQ/HighQ
Input packets 0, bytes 0
Output packets 0, bytes 0, drops 0
CEF Table statistics:
Table name Version Prefix-xdr Status
Default-table 7 4 Active, up, sync

The following is sample output from the show cef linecard internal command for all line cards:

Router# show cef linecard internal

CEF linecard slot number 0, status up
Sequence number 11, Maximum sequence number expected 35
Send failed 0, Out Of Sequence 0
Linecard CEF reset 2, reloaded 2
Total elements queued:
prefix 4
adjacency 4
interface 91
address 2
policy routing 2
hw interface 57
state 6
resequence 2
control 13
table 2
time 4484
flow features deactivate 2
flow cache config 2
flow export config 2
dss 2
isl 2
mpls atm vc remove 2
mpls atm vc set label 2
2
2
3
1
4574 elements packed in 4495 messages(90286 bytes) sent
115 elements cleared
Total elements cleared:
prefix 2
adjacency 1
interface 63
address 1
policy routing 1
hw interface 29
state 2
control 5
table 1
flow features deactivate 1
flow cache config 1
flow export config 1
dss 1
isl 1
mpls atm vc remove 1
mpls atm vc set label 1
1
1
1
linecard disabled - failed a reload
0/0/0 xdr elements in LowQ/MediumQ/HighQ
Input packets 0, bytes 0
Output packets 0, bytes 0, drops 0

CEF Table statistics:
Table name Version Prefix-xdr Status
Default-table 8 4 Active, sync

Table 7 describes the significant fields shown in the displays.

Table 7 show cef linecard Field Descriptions

Field

Description

Table name

Name of the CEF table.

Version

Number of the Forwarding Information Base (FIB) table version.

Prefix-xdr

Number of prefix IPC information elements XDRs processed.

Status

State of the CEF table.

Slot

Slot number of the line card.

MsgSent

Number of IPC messages sent.

XDRSent

XDRs packed into IPC messages sent from the Route Processor (RP) to the line card.

Window

Size of the IPC window between the line card and the RP.

LowQ/MedQ/HighQ

Number of XDR elements in the Low, Medium, and High priority queues.

Flags

Indicates the status of the line card. States are...

•up—Line card is up.

•sync—Line card is in synchronization with the main FIB.

•FIB is repopulated on the line card.

•reset—Line card FIB is reset.

•reloading—Line card FIB is being reloaded.

•disabled—Line card is disabled.

CEF-XDR

Number of CEF XDR messages processed.

I/Fs

Interface numbers.

Related Commands

Command

Description

show cef

Displays which packets the line cards dropped or displays which packets were not express-forwarded.

show cef interface

Displays CEF-related interface information.

show ipv6 cef

Displays entries in the IPv6 FIB.

show cef not-cef-switched

To display which packets were sent to a different switching path, use the show cef not-cef-switched command in user EXEC or privileged EXEC mode.

show cef not-cef-switched
Syntax Description

This command has no arguments or keywords.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.2 GS

This command was introduced to support the Cisco 12012 Internet router.

11.1 CC

Multiple platform support was added.

12.0(22)S

The display output for this command was modified to include support for Cisco Express Forwarding for IPv6 (CEFv6) and distributed CEF for IPv6 (dCEFv6) packets.

12.0(23)S

This command was integrated into Cisco IOS Release 12.0(23)S.

12.2(13)T

This command was integrated into Cisco IOS Release 12.2(13)T. Previously there was a show cef command, and drop was a keyword of that command.

12.2(14)S

This command was integrated into Cisco IOS Release 12.2(14)S.

Usage Guidelines

If packets are not being cef switched and you want to determine why, enter the show cef not-cef switched command.

Note If CEFv6 or dCEFv6 is enabled globally on the router, the show cef not-cef-switched command displays IPv6 CEF counter information and IPv4 CEF counter information. If CEFv6 or dCEFv6 is not enabled globally on the router, the command displays only IPv4 CEF counter information.

Examples

The following is sample output from the show cef not-cef switched command:

Router# show cef not-cef-switched

CEF Packets passed on to next switching layer
Slot No_adj No_encap Unsupp'ted Redirect Receive Options Access Frag
RP 0 0 0 0 91584 0 0 0
1 0 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0 0
IPv6 CEF Packets passed on to next switching layer
Slot No_adj No_encap Unsupp'ted Redirect Receive Options Access MTU
RP 0 0 0 0 92784 0 0 0
1 0 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0 0

Table 8 describes the significant fields shown in the display.

Table 8 show cef not-cef-switched Field Descriptions

Field

Meaning

Slot

The slot number on which the packets were received.

No_adj

Indicates the number of packets sent to the processor due to incomplete adjacency.

No_encap

Indicates the number of packets sent to the processor for Address Resolution Protocol (ARP) resolution.

Unsupp'ted

Indicates the number of packets punted to the next switching level due to unsupported features.

Redirect

Records packets that are ultimately destined to the router, and packets destined to a tunnel endpoint on the router. If the decapsulated tunnel is IP, it is CEF switched; otherwise, packets are process switched.

Receive

Indicates the number of packets ultimately destined to the router, or packets destined to a tunnel endpoint on the router. If the decapsulated tunnel packet is IP, the packet is CEF switched. Otherwise, packets are process switched.

Options

Indicates the number of packets with options. Packets with IP options are handled only at the process level.

Access

Indicates the number of packets punted due to an access list failure.

Frag

Indicates the number of packets punted due to fragmentation failure.

Note This field is not supported for IPv6 packets.

MTU

Indicates the number of packets punted due to maximum transmission unit (MTU) failure.

Note This field is not supported for IPv4 packets.

Related Commands

Command

Description

show cef drop

Displays a list of which packets each line card dropped.

show cef interface

Displays CEF-related interface information.

show ipv6 cef

Displays entries in the IPv6 FIB.

show cef timers

To display the current state of the timers internal to the CEF process, use the show cef timers command in user EXEC or privileged EXEC mode.

show cef timers
Syntax Description

This command has no arguments or keywords.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.3(2)T

This command was introduced.

Examples

The following is sample output from the show cef timers command:

Router# show cef timers

CEF background process
Expiration Type
0.208 (parent)
0.208 adjacency update hwidb
0.540 slow resolution
1.208 ARP throttle

CEF FIB scanner process
Expiration Type
44.852 (parent)
44.852 checker scan-rib

Table 9 describes the significant fields shown in the display.

Table 9 show cef timers Field Descriptions

Field

Description

Expiration

Seconds in which the timers will expire.

Type

Identification of the timer.

Related Commands

Command

Description

show cef interface

Displays CEF-related interface information.

show ipv6 cef

Displays entries in the IPv6 FIB.

show interface stats

To display numbers of packets that were process switched, fast switched, and distributed switched, use the show interface stats command in user EXEC or privileged EXEC mode.

show interface type number stats
Syntax Description

type number

Interface type and number about which to display statistics.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.0

This command was introduced.

Usage Guidelines

Use this command on the RP.

Note When fast switching is configured on the outbound interface, and RSP optimum, RSP flow, and VIP DFS switching modes are all specified on the incoming interface, the interface on which RSP optimum, RSP flow, and VIP DFS switching modes is not enabled can still show packets switched out via those switching paths when packets are received from other interfaces with RSP optimum, RSP flow, and VIP DES switching modes enabled.

Examples

The following is sample output from the show interface stats command:

Router# show interface fddi 3/0/0 stats
Fddi3/0/0
Switching path Pkts In Chars In Pkts Out Chars Out
Processor 3459994 1770812197 4141096 1982257456
Route cache 10372326 3693920448 439872 103743545
Distributed cache 19257912 1286172104 86887377 1184358085
Total 33090232 2455937453 91468345 3270359086

Table 10 describes the significant fields in the display.

Table 10 show interface stats Field Descriptions

Field

Description

Fddi3/0/0

Interface for which information is shown.

Switching path

Column heading for the various switching paths below it.

Pkts In

Number of packets received in each switching mechanism.

Chars In

Number of characters received in each switching mechanism.

Pkts Out

Number of packets sent out each switching mechanism.

Chars Out

Number of characters sent out each switching mechanism.

show interfaces switching

To display the number of packets sent and received on an interface classified by the switching path, use the show interfaces switching command in user EXEC and privileged EXEC mode.

show interfaces [type number] switching
Syntax Description

type number

Interface type and number about which to display packet switching path information.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.3

This command was introduced.

Usage Guidelines

Use the show interfaces switching command to show which path the router uses and how the traffic is switched. This command is also useful for troubleshooting CPU utilization.

Statistics for packets in, bytes in, packets out, and bytes out are displayed for the available protocols. The statistics are arranged by process, cache misses, fast-path and autonomous path. All values displayed by the show interfaces switching command are absolute. The clear interface counters command has no effect on these values.

You must enter at least seven characters of the switching keyword (switchi) when you use the show interfaces switching command.

Examples

The following shows sample output from the show interfaces switching command:

Router# show interface switching

FastEthernet0/0
Throttle count 0
Drops RP 0 SP 0
SPD Flushes Fast 0 SSE 0
SPD Aggress Fast 0
SPD Priority Inputs 0 Drops 0

Protocol IP
Switching path Pkts In Chars In Pkts Out Chars Out
Process 24 8208 0 0
Cache misses 0 - - -
Fast 0 0 0 0
Auton/SSE 0 0 0 0

Protocol DECnet
Switching path Pkts In Chars In Pkts Out Chars Out
Process 0 0 0 0
Cache misses 0 - - -
Fast 0 0 0 0
Auton/SSE 0 0 0 0
.........
........

Protocol IPv6
Switching path Pkts In Chars In Pkts Out Chars Out
Process 0 0 0 0
Cache misses 0 - - -
Fast 0 0 0 0
Auton/SSE 0 0 0 0

Protocol Other
Switching path Pkts In Chars In Pkts Out Chars Out
Process 2 120 3 180
Cache misses 0 - - -
Fast 0 0 0 0
Auton/SSE 0 0 0 0

NOTE: all counts are cumulative and reset only after a reload.

Interface POS4/0 is disabled

The following shows sample output from the show interfaces switching command for the interface FastEthernet 0/0:

Router> show interfaces FastEthernet 0/0 switching

FastEthernet0/0
Throttle count 0
Drops RP 0 SP 0
SPD Flushes Fast 218 SSE 0
SPD Aggress Fast 0
SPD Priority Inputs 0 Drops 0

Protocol IP
Switching path Pkts In Chars In Pkts Out Chars Out
Process 239 23422 237 23226
Cache misses 0 - - -
Fast 0 0 0 0
Auton/SSE 0 0 0 0

Protocol ARP
Switching path Pkts In Chars In Pkts Out Chars Out
Process 4 240 3 180
Cache misses 0 - - -
Fast 0 0 0 0
Auton/SSE 0 0 0 0

Protocol CDP
Switching path Pkts In Chars In Pkts Out Chars Out
Process 8 2632 15 5477
Cache misses 0 - - -
Fast 0 0 0 0
Auton/SSE 0 0 0 0

NOTE: all counts are cumulative and reset only after a reload.

Table 11 describes the significant fields shown in the display.

Table 11 show interfaces switching Field Descriptions

Field

Description

Throttle count

Number of times input packet processing was throttled on this interface.

Drops

RP—Number of packets dropped for input congestion.
SP—Number of packets flushed by external throttling.

SPD Flushes

Fast—Number of packets flushed by selective packet discard on RP.
SSE—Number of packets flushed by external selective packet discard.

SPD Aggress

Fast—Input packets dropped by aggressive selective packet discard.

SPD Priority

Inputs—Number of priority packets received.
Drops—Number of priority packets dropped.

Protocol

Name of the protocol for which packet switching information is displayed.

Switching Path

Indicates the traffic switching path.

Pkts In

Number of incoming packets.

Char In

Number of incoming bytes.

Pkts Out

Number of outgoing packets.

Char Out

Number of outgoing bytes.

Process

Process switching. With this type of switching, an incoming packet is associated with a destination network or subnet entry in the routing table located in main memory. Process switching is a scheduled process that is performed by the system processor.

Cache misses

Packets that were forwarded through the process level (for which there was no entry in fast switching cache).

Fast

Fast switching. With this type of switching, an incoming packet matches an entry in the fast-switching cache located in main memory. Fast switching is done via asynchronous interrupts, which are handled in real time. Fast switching allows higher throughput by switching a packet using a cache created by previous packets.

Auton

Autonomous switching. With this type of switching, an incoming packet matches an entry in the autonomous-switching cache located on the interface processor. Autonomous switching provides faster packet switching by allowing the ciscoBus controller to switch packets independently without having to interrupt the system processor. It is available only on Cisco 7000 series routers and in AGS+ systems with high-speed network controller cards.

SSE

Silicon switching engine switching. With this type of switching, an incoming packet matches an entry in the silicon-switching cache located in the silicon switching engine (SSE) of the Silicon Switch Processor (SSP) module. This module is available only on Cisco 7000 series routers. Silicon switching provides very fast, dedicated packet switching by allowing the SSE to switch packets independently without having to interrupt the system processor.

Related Commands

Command

Description

show interface stats

Displays numbers of packets that were process switched, fast switched, and distributed switched.

show ip cache

To display the routing table cache used to fast switch IP traffic, use the show ip cache command in user EXEC or privileged EXEC mode.

show ip cache [prefix mask] [type number]
Syntax Description

prefix

(Optional) Displays only the entries in the cache that match the prefix and mask combination.

mask

(Optional) Displays only the entries in the cache that match the prefix and mask combination.

type

(Optional) Displays only the entries in the cache that match the interface type and number combination.

number

(Optional) Displays only the entries in the cache that match the interface type and number combination.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

10.0

This command was introduced.

Usage Guidelines

The show ip cache display shows MAC headers up to 92 bytes.

Examples

The following is sample output from the show ip cache command:

Router# show ip cache

IP routing cache version 4490, 141 entries, 20772 bytes, 0 hash overflows
Minimum invalidation interval 2 seconds, maximum interval 5 seconds,
quiet interval 3 seconds, threshold 0 requests
Invalidation rate 0 in last 7 seconds, 0 in last 3 seconds
Last full cache invalidation occurred 0:06:31 ago

Prefix/Length Age Interface MAC Header
131.108.1.1/32 0:01:09 Ethernet0/0 AA000400013400000C0357430800
131.108.1.7/32 0:04:32 Ethernet0/0 00000C01281200000C0357430800
131.108.1.12/32 0:02:53 Ethernet0/0 00000C029FD000000C0357430800
131.108.2.13/32 0:06:22 Fddi2/0 00000C05A3E000000C035753AAAA0300
00000800
131.108.2.160/32 0:06:12 Fddi2/0 00000C05A3E000000C035753AAAA0300
00000800
131.108.3.0/24 0:00:21 Ethernet1/2 00000C026BC600000C03574D0800
131.108.4.0/24 0:02:00 Ethernet1/2 00000C026BC600000C03574D0800
131.108.5.0/24 0:00:00 Ethernet1/2 00000C04520800000C03574D0800
131.108.10.15/32 0:05:17 Ethernet0/2 00000C025FF500000C0357450800
131.108.11.7/32 0:04:08 Ethernet1/2 00000C010E3A00000C03574D0800
131.108.11.12/32 0:05:10 Ethernet0/0 00000C01281200000C0357430800
131.108.11.57/32 0:06:29 Ethernet0/0 00000C01281200000C0357430800

Table 12 describes the significant fields shown in the display.

Table 12 show ip cache Field Descriptions

Field

Description

IP routing cache version

Version number of this table. This number is incremented any time the table is flushed.

entries

Number of valid entries.

bytes

Number of bytes of processor memory for valid entries.

hash overflows

Number of times autonomous switching cache overflowed.

Minimum invalidation interval

Minimum time delay between cache invalidation request and actual invalidation.

maximum interval

Maximum time delay between cache invalidation request and actual invalidation.

quiet interval

Length of time between cache flush requests before the cache will be flushed.

threshold <n> requests

Maximum number of requests that can occur while the cache is considered quiet.

Invalidation rate <n> in last <m> seconds

Number of cache invalidations during the last <m> seconds.

0 in last 3 seconds

Number of cache invalidation requests during the last quiet interval.

Last full cache invalidation occurred <hh:mm:ss> ago

Time since last full cache invalidation was performed.

Prefix/Length

Network reachability information for cache entry.

Age

Age of cache entry.

Interface

Output interface type and number.

MAC Header

Layer 2 encapsulation information for cache entry.

The following is sample output from the show ip cache command with a prefix and mask specified:

Router# show ip cache 131.108.5.0 255.255.255.0

IP routing cache version 4490, 119 entries, 17464 bytes, 0 hash overflows
Minimum invalidation interval 2 seconds, maximum interval 5 seconds,
quiet interval 3 seconds, threshold 0 requests
Invalidation rate 0 in last second, 0 in last 3 seconds
Last full cache invalidation occurred 0:11:56 ago

Prefix/Length Age Interface MAC Header
131.108.5.0/24 0:00:34 Ethernet1/2 00000C04520800000C03574D0800

The following is sample output from the show ip cache command with an interface specified:

Router# show ip cache e0/2

IP routing cache version 4490, 141 entries, 20772 bytes, 0 hash overflows
Minimum invalidation interval 2 seconds, maximum interval 5 seconds,
quiet interval 3 seconds, threshold 0 requests
Invalidation rate 0 in last second, 0 in last 3 seconds
Last full cache invalidation occurred 0:06:31 ago

Prefix/Length Age Interface MAC Header
131.108.10.15/32 0:05:17 Ethernet0/2 00000C025FF500000C0357450800
Related Commands

Command

Description

clear ip cache

Deletes entries in the routing table cache used to fast switch IP traffic.

show ip cef adjacency

To display Cisco Express Forwarding (CEF) recursive and direct prefixes resolved through an adjacency, use the show ip cef adjacency command in user EXEC or privileged EXEC mode.

show ip cef [vrf vrf-name] adjacency type number ip-prefix [detail]
To display CEF recursive and direct prefixes resolved through special adjacency types representing nonstandard switching paths, use this form of the show ip cef adjacency command in privileged EXEC mode.

show ip cef [vrf vrf-name] adjacency {discard | drop | glean | null | punt} [detail]
Syntax Description

vrf

(Optional) A Virtual Private Network (VPN) routing and forwarding (VRF) instance.

vrf-name

(Optional) Name assigned to the VRF.

type number

Interface type and number for which to display forwarding information base (FIB) entries.

ip-prefix

Next hop IP prefix, in dotted decimal format (A.B.C.D).

detail

(Optional) Displays detailed information for each CEF adjacency type entry.

discard

Discard adjacency. Sets up for loopback interfaces. Loopback IP addresses are receive entries in the FIB table.

drop

Drop adjacency. Packets forwarded to this adjacency are dropped.

glean

Glean adjacency. Represents destinations on a connected interface for which no ARP cache entry exists.

null

Null adjacency. Formed for the Null0 interface. Packets forwarded to this adjacency are dropped.

punt

Punt adjacency. Represents destinations that cannot be switched in the normal path and that are punted to the next fastest switching vector.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.1 CC

This command was introduced.

12.0(5)T

The vrf keyword was added.

Usage Guidelines

An adjacency is a node that can be reached by one Layer 2 hop.

This command shows all prefixes resolved through a regular next hop adjacency or through a special adjacency type such as discard, drop, glean, null and punt.

The following sample output is from the show ip cef adjacency command when the glean type is specified:

Router# show ip cef adjacency glean

Prefix Next Hop Interface
9.2.61.0/24 attached Ethernet1/0/0
172.17.250.252/32 9.2.61.1 Ethernet1/0/0

The following sample output is from the show ip cef adjacency drop command with detail specified:

Router# show ip cef adjacency drop detail

IP CEF with switching (Table Version 4), flags=0x0
4 routes, 0 reresolve, 0 unresolved (0 old, 0 new), peak 0
4 leaves, 8 nodes, 8832 bytes, 13 inserts, 9 invalidations
0 load sharing elements, 0 bytes, 0 references
universal per-destination load sharing algorithm, id 00B999CA
3 CEF resets, 0 revisions of existing leaves
Resolution Timer: Exponential (currently 1s, peak 1s)
0 in-place modifications
refcounts: 533 leaf, 536 node

224.0.0.0/4, version 3
0 packets, 0 bytes, Precedence routine (0)
via 0.0.0.0, 0 dependencies
next hop 0.0.0.0
valid drop adjacency

The following sample output shows the direct IP prefix when the next hop Gigabit Ethernet interface 3/0 is specified:

Router# show ip cef adjacency GigabitEthernet 3/0 172.20.26.29

Prefix Next Hop Interface
34.1.1.0/24 172.20.26.29 GigabitEthernet3/0

Table 13 describes the significant fields shown in the display.

Table 13 show ip cef adjacency Field Descriptions

Field

Description

Prefix

Destination IP prefix.

Next Hop

Next hop IP address.

Interface

Next hop interface.

Related Commands

Command

Description

show adjacency

Displays CEF adjacency table information.

show ip cef events

To display all recorded Cisco Express Forwarding (CEF) forwarding information base (FIB) and adjacency events, use the show ip cef events command in user EXEC or privileged EXEC mode.

show ip cef [vrf vrf-name] events [ip-prefix] [new | within seconds] [detail] [summary]
Syntax Description

vrf

(Optional) A Virtual Private Network (VPN) routing and forwarding (VRF) instance.

vrf-name

(Optional) Name assigned to the VRF.

ip-prefix

(Optional) Next hop IP prefix, in dotted decimal format (A.B.C.D).

new

(Optional) Displays new CEF events not previously shown.

within seconds

(Optional) Displays CEF events that occurred within a specified number of seconds.

detail

(Optional) Displays detailed information for each CEF event entry.

summary

(Optional) Displays a summary of the CEF event log.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.0(15)S

This command was introduced.

12.2(2)T

This command was integrated into Cisco IOS Release 12.2(2)T.

Usage Guidelines

This command shows the state of the table event log and must be enabled for events to record.

The ip cef table event-log command controls parameters such as event log size.

Examples

The following sample output is from the show ip cef events command with summary specified:

Router# show ip cef events summary

CEF table events summary:
Storage for 10000 events (320000 bytes), 822/0 events recorded/ignored
Matching all events, traceback depth 16
Last event occurred 00:00:06.516 ago.

The following sample output is from the show ip cef events command displaying events that occurred within 1 second:

Router# show ip cef events within 1

CEF table events (storage for 10000 events, 14 events recorded)
+00:00:00.000:[Default-table] *.*.*.*/* New FIB table [OK]
+00:00:00.000:[Default-table] 9.1.80.194/32 FIB insert in mtrie [OK]
+00:00:00.000:[Default-table] 9.1.80.0/32 FIB insert in mtrie [OK]
+00:00:00.000:[Default-table] 9.1.80.255/32 FIB insert in mtrie [OK]
+00:00:00.004:[Default-table] 9.1.80.0/24 FIB insert in mtrie [OK]
+00:00:00.004:[Default-table] 9.1.80.0/24 NBD up [OK]
+00:00:00.004:[Default-table] 224.0.0.0/4 FIB insert in mtrie [OK]
+00:00:00.012:[Default-table] 9.1.80.0/24 NBD up [Ignr]
+00:00:00.012:[Default-table] 224.0.0.0/4 FIB remove [OK]
+00:00:00.016:[Default-table] 224.0.0.0/4 FIB insert in mtrie [OK]
+00:00:05.012:[Default-table] 224.0.0.0/4 FIB remove [OK]
+00:00:05.012:[Default-table] 224.0.0.0/4 FIB insert in mtrie [OK]
+00:00:28.440:[Default-table] 224.0.0.0/4 FIB remove [OK]
+00:00:28.440:[Default-table] 224.0.0.0/4 FIB insert in mtrie [OK]
First event occured at 00:00:36.568 (00:04:40.756 ago)
Last event occured at 00:01:05.008 (00:04:12.316 ago)

Table 14 describes the significant fields shown in the display.

Table 14 show ip cef events Field Descriptions

Field

Description

+00:00:00.000

Time stamp of the IP CEF event.

[Default-table]

Type of VPN routing and forwarding (VRF) table for this event entry.

*.*.*.*/*

All IP prefixes.

9.1.80.194/32

IP prefix associated with the event.

FIB insert in mtrie

IP prefix insert in the FIB table event.

NBD up

IP prefix up event.

FIB remove

FIB entry remove event.

[Ignr]

CEF ignored event.

[OK]

CEF processed event.

Related Commands

Command

Description

ip cef table consistency-check

Enables CEF table consistency checker types and parameters.

ip cef table event-log

Controls CEF table event-log characteristics.

show ip cef exact-route

To display the exact route for a source-destination IP address pair, use the show ip cef exact-route command in user EXEC or privileged EXEC mode.

show ip cef [vrf vrf-name] exact-route source-address destination-address
Syntax Description

vrf

(Optional) A Virtual Private Network (VPN) routing and forwarding (VRF) instance.

vrf-name

(Optional) Name assigned to the VRF.

source-address

Specifies the network source address.

destination-address

Specifies the network destination address.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.1(4)T

This command was introduced.

Usage Guidelines

When you are load balancing per destination, this command shows the exact next hop that is used for a given IP source-destination pair.

Examples

The following sample output is from the show ip cef exact-route command:

Router# show ip cef exact-route 1.1.1.1 172.17.249.252

1.1.1.1 -> 172.17.249.252 :Ethernet2/0/0 (next hop 9.1.104.1)

Table 15 describes the significant fields shown in the display.

Table 15 show ip cef exact-route Field Descriptions

Field

Description

1.1.1.1 -> 172.17.249.252

From source 1.1.1.1 to destination 172.17.249.252.

Ethernet2/0/0 (next hop 9.1.104.1)

Next hop is 9.1.104.1 on Ethernet 2/0/0.

show ip cef inconsistency

To display Cisco Express Forwarding (CEF) IP prefix inconsistencies, use the show ip cef inconsistency command in user EXEC or privileged EXEC mode.

show ip cef [vrf vrf-name] inconsistency [records [detail]]
Syntax Description

vrf

(Optional) A Virtual Private Network (VPN) routing and forwarding (VRF) instance.

vrf-name

(Optional) Name assigned to the VRF.

records

(Optional) Displays all recorded inconsistencies.

detail

(Optional) Displays detailed information for each CEF table entry.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.0(15)S

This command was introduced.

12.2(2)T

This command was integrated into Cisco IOS Release 12.2(2)T.

Usage Guidelines

This command is available only on routers with line cards.

This command displays recorded CEF inconsistency records found by the lc-detect, scan-rp, scan-rib, and scan-lc detection mechanisms.

You can configure the CEF consistency detection mechanisms using the ip cef table consistency-check command.

Examples

The following sample output is from the show ip cef inconsistency command:

Router# show ip cef inconsistency

Table consistency checkers (settle time 65s)
lc-detect:running
0/0/0 queries sent/ignored/received
scan-lc:running [100 prefixes checked every 60s]
0/0/0 queries sent/ignored/received
scan-rp:running [100 prefixes checked every 60s]
0/0/0 queries sent/ignored/received
scan-rib:running [1000 prefixes checked every 60s]
0/0/0 queries sent/ignored/received
Inconsistencies:0 confirmed, 0/16 recorded

Table 16 describes the significant fields shown in the display.

Table 16 show ip cef inconsistency Field Descriptions

Field

Description

settle time

Time after a recorded inconsistency is confirmed.

lc-detect running

Consistency checker lc-detect is running.

0/0/0 queries

Number of queries sent, ignored, and received.

Inconsistencies:0 confirmed, 0/16 recorded

Number of inconsistencies confirmed, and recorded. Sixteen is the maximum number of inconsistency records to be recorded.

Related Commands

Command

Description

ip cef table consistency-check

Enables CEF table consistency checker types and parameters.

show ip cef traffic prefix-length

To display Cisco Express Forwarding (CEF) traffic statistics, use the show ip cef traffic prefix-length command in user EXEC or privileged EXEC mode.

show ip cef [vrf vrf-name] traffic prefix-length
Syntax Description

vrf

(Optional) A Virtual Private Network (VPN) routing and forwarding (VRF) instance.

vrf-name

(Optional) Name assigned to the VRF.

prefix-length

Displays traffic statistics by prefix size.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.1 CC

This command was introduced.

12.0(5)T

The vrf keyword was added.

Usage Guidelines

This command is used to display CEF switched traffic statistics by destination prefix length. The ip cef accounting prefix-length command must be enabled for the counters to increment.

Examples

The following sample output is from the show ip cef traffic prefix-length command:

Router# show ip cef traffic prefix-length

IP prefix length switching statistics:
----------------------------------------
Prefix Number of Number of
Length Packets Bytes
----------------------------------------
0 0 0
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
.
.
.
28 0 0
29 0 0
30 0 0
31 0 0
32 0 0

Table 17 describes the significant fields shown in the display.

Table 17 show ip cef traffic prefix-length Field Descriptions

Field

Description

Prefix Length

Destination IP prefix length for CEF switched traffic.

Number of packets

Number of packets forwarded for the specified IP prefix length.

Number of bytes

Number of bytes transmitted for the specified IP prefix length.

Related Commands

Command

Description

ip cef accounting

Enables network accounting of CEF.

show ip cef vrf

To display the Cisco Express Forwarding (CEF) forwarding table associated with a Virtual Private Network (VPN) routing/forwarding instance (VRF), use the show ip cef vrf command in privileged EXEC mode.

show ip cef vrf vrf-name [ip-prefix [mask [longer-prefixes]] [detail] [output-modifiers]] [interface interface-number] [adjacency [interface interface-number] [detail] [discard] [drop] [glean] [null] [punt] [output-modifiers]] [detail [output-modifiers]] [non-recursive [detail] [output-modifiers]] [summary [output-modifiers]] [traffic [prefix-length] [output-modifiers]] [unresolved [detail] [output-modifiers]]
Syntax Description

vrf-name

Name assigned to the VRF.

ip-prefix

(Optional) IP prefix of entries to show, in dotted decimal format (A.B.C.D).

mask

(Optional) Mask of the IP prefix, in dotted decimal format.

longer-prefixes

(Optional) Displays table entries for all of the more specific routes.

detail

(Optional) Displays detailed information for each CEF table entry.

output-modifiers

(Optional) For a list of associated keywords and arguments, use context-sensitive help.

interface

(Optional) Type of network interface to use: ATM, Ethernet, Loopback, POS (packet over SONET) or Null.

interface-number

Number identifying the network interface to use.

adjacency

(Optional) Displays all prefixes resolving through adjacency.

discard

(Optional) Discards adjacency.

drop

(Optional) Drops adjacency.

glean

(Optional) Gleans adjacency.

null

(Optional) Nulls adjacency.

punt

(Optional) Punts adjacency.

non-recursive

(Optional) Displays only nonrecursive routes.

summary

(Optional) Displays a CEF table summary.

traffic

(Optional) Displays traffic statistics.

prefix-length

(Optional) Displays traffic statistics by prefix size.

unresolved

(Optional) Displays only unresolved routes.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.0(5)T

This command was introduced.

12.0(21)ST

This command was integrated into Cisco IOS 12.0(21)ST.

12.0(23)S

This command was integrated into Cisco IOS 12.0(23)S.

12.2(13)T

This command was integrated into Cisco IOS 12.2(13)T.

Usage Guidelines

Used with only the vrf-name argument, the show ip cef vrf command shows a shortened display of the CEF table.

Used with the detail keyword, the show ip cef vrf command shows detailed information for all CEF table entries.

Examples

This example shows the forwarding table associated with the VRF called vrf1:

Router# show ip cef vrf vrf1

Prefix Next Hop Interface
0.0.0.0/32 receive
11.0.0.0/8 50.0.0.1 Ethernet1/3
12.0.0.0/8 52.0.0.2 POS6/0
50.0.0.0/8 attached Ethernet1/3
50.0.0.0/32 receive
50.0.0.1/32 50.0.0.1 Ethernet1/3
50.0.0.2/32 receive
50.255.255.255/32 receive
51.0.0.0/8 52.0.0.2 POS6/0
224.0.0.0/24 receive
255.255.255.255/32 receive

Table 18 describes the fields shown in the example.

Table 18 show ip cef vrf Field Descriptions

Field

Description

Prefix

Specifies the network prefix.

Next Hop

Specifies the BGP next hop address.

Interface

Specifies the VRF interface.

Related CommandsRelated Commands

Command

Description

show ip route vrf

Displays the IP routing table associated with a VRF.

show ip vrf

Displays VRF interfaces.

show ip cef

To display entries in the Forwarding Information Base (FIB) or to display a summary of the FIB, use the show ip cef command in user EXEC or privileged EXEC mode.

show ip cef [vrf vrf-name] [unresolved [detail] | [detail | summary]]
Specific FIB Entries Based on IP Address Information

show ip cef [vrf vrf-name] [network [mask]] [longer-prefixes] [detail]
Specific FIB Entries Based on Interface Information

show ip cef [vrf vrf-name] [type number] [detail]
Specific FIB Entries Based on Nonrecursive Routes

show ip cef [vrf vrf-name] non-recursive [detail]
Syntax Description

vrf

(Optional) A Virtual Private Network (VPN) routing/forwarding (VRF) instance.

vrf-name

(Optional) Name assigned to the VRF.

unresolved

(Optional) Displays unresolved FIB entries.

detail

(Optional) Displays detailed FIB entry information.

summary

(Optional) Displays a summary of the FIB.

network

(Optional) Network number for which to display a FIB entry.

mask

(Optional) Network mask to be used with the specified network.

longer-prefixes

(Optional) Displays FIB entries for more specific destinations.

type number

(Optional) Interface type and number for which to display FIB entries.

non-recursive

Displays only nonrecursive routes.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.2 GS

This command was introduced to support the Cisco 12012 Internet router.

11.1 CC

Multiple platform support was added.

12.0(5)T

The vrf keyword was added.

12.0(17)ST

The display of a message indicating support for Border Gateway Protocol (BGP) policy accounting was added.

12.2(13)T

This command was integrated into Cisco IOS Release 12.2(13)T.

12.0(26)S

Additional output display was added for the summary keyword.

Usage Guidelines

The show ip cef command without any keywords or arguments shows a brief display of all FIB entries.

The show ip cef detail command shows detailed FIB entry information for all FIB entries.

Examples

The following is sample output from the show ip cef unresolved command:

Router# show ip cef unresolved

IP Distributed CEF with switching (Table Version 136632)
45776 routes, 13 unresolved routes (0 old, 13 new)
45776 leaves, 2868 nodes, 8441480 bytes, 136632 inserts, 90856 invalidations
1 load sharing elements, 208 bytes, 1 references
1 CEF resets, 1 revisions of existing leaves
refcounts: 527292 leaf, 465617 node

10.214.0.0/16, version 136622
0 packets, 0 bytes
  via 172.17.233.56, 0 dependencies, recursive
  unresolved
10.215.0.0/16, version 136623
0 packets, 0 bytes
  via 172.17.233.56, 0 dependencies, recursive
  unresolved
10.218.0.0/16, version 136624
0 packets, 0 bytes

The following is sample output from the show ip cef summary command:

Router# show ip cef summary

IP Distributed CEF with switching (Table Version 135165)
45788 routes, 0 reresolve, 4 unresolved routes (0 old, 4 new)
45788 leaves, 2868 nodes, 8442864 bytes, 135165 inserts, 89377 invalidations
0 load sharing elements, 0 bytes, 0 references
1 CEF resets, 0 revisions of existing leaves
refcounts: 527870 leaf, 466167 node

The following is sample output from the show ip cef summary command on Cisco IOS Release 12.0(26)S and higher:

Router# show ip cef summary

IP Distributed CEF with switching (Table Version 2283113), flags=0x0
164413 routes, 0 reresolve, 0 unresolved (0 old, 0 new), peak 3451
2234324 instant recursive resolutions, 0 used background process
304 load sharing elements, 336 references
14758 in-place/0 aborted modifications
36745512 bytes allocated to the FIB table data structures
universal per-destination load sharing algorithm, id B03E8BB3
2(0) CEF resets
Resolution Timer: Exponential (currently 1s, peak 1s)
Tree summary:
8-8-8-8 stride pattern
short mask protection disabled
164413 leaves, 11622 nodes using 16691988 bytes
Transient memory used: 168, max: 865064

Table epoch: 0 (164413 entries at this epoch)

Hardware resource allocation status summary
Green (Normal), Yellow (Caution) Red (Alarm)
Slot HW Resource Name Util Alert
1 E3 Rx PLU 22 G
1 E3_Rx_TLU 6 G
2 E3 Rx PLU 22 G
2 E3_Rx_TLU 6 G
3 E3 Rx PLU 22 G
3 E3_Rx_TLU 6 G
9 E3 Rx PLU 22 G
9 E3_Rx_TLU 6 G

Adjacency Table has 11 adjacencies

The following is sample output from the show ip cef detail command for Ethernet interface 0. It shows all the prefixes resolving through adjacency pointing to next hop Ethernet interface 0/0 and next hop interface IP address 172.19.233.33.

Router# show ip cef e0/0 172.19.233.33 detail

IP Distributed CEF with switching (Table Version 136808)
45800 routes, 8 unresolved routes (0 old, 8 new) 45800 leaves, 2868 nodes, 8444360 bytes, 136808 inserts, 91008 invalidations 1 load sharing elements, 208 bytes, 1 references 1 CEF resets, 1 revisions of existing leaves refcounts: 527343 leaf, 465638 node

172.19.233.33/32, version 7417, cached adjacency 172.19.233.33 0 packets, 0 bytes, Adjacency-prefix
via 172.19.233.33, Ethernet0/0, 0 dependencies
next hop 172.19.233.33, Ethernet0/0
valid cached adjacency

The following is sample output from the show ip cef detail command for the prefix 192.168.5.0, showing that the BGP policy accounting bucket number 4 (traffic_index 4) is assigned to this prefix:

Router# show ip cef 192.168.5.0 detail

192.168.5.0/24, version 21, cached adjacency to POS7/2
0 packets, 0 bytes, traffic_index 4
via 10.14.1.1, 0 dependencies, recursive
next hop 10.14.1.1, POS7/2 via 10.14.1.0/30
valid cached adjacency

The following example shows the forwarding table associated with the VRF named vrf1:

Router# show ip cef vrf vrf1

Prefix Next Hop Interface
0.0.0.0/32 receive
10.11.0.0/16 10.50.0.1 Ethernet1/3
10.12.0.0/16 10.52.0.2 POS6/0
10.50.0.0/16 attached Ethernet1/3
10.50.0.0/32 receive
10.50.0.1/32 10.50.0.1 Ethernet1/3
10.50.0.2/32 receive
10.255.255.255/32 receive
10.51.0.0/16 10.52.0.2 POS6/0
224.0.0.0/24 receive
255.255.255.255/32 receive

Table 19 describes the significant fields shown in the display.

Table 19 show ip cef vrf Field Descriptions

Field

Description

Prefix

Specifies the network prefix.

Next Hop

Specifies the BGP next hop address.

Interface

Specifies the VRF interface.

Related Commands

Command

Description

show cef

Displays which packets the line cards dropped, or displays which packets were not express forwarded.

show cef interface

Displays CEF-related interface information.

show ip mds forwarding

To display the Multicast Forwarding Information Base (MFIB) table and forwarding information for multicast distributed switching (MDS) on a line card, use the show ip mds forwarding command in user EXEC or privileged EXEC mode.

show ip mds forwarding [group-address] [source-address]
Syntax Description

group-address

(Optional) Address of the IP multicast group for which to display the MFIB table.

source-address

(Optional) Address of the source of IP multicast packets for which to display the MFIB table.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.2(11)GS

This command was introduced.

Usage Guidelines

Use this command on the line card. This command displays the MFIB table, forwarding information, and related flags and counts.

Note To reach the console for a line card, enter attach slot# (slot number where the line card resides).

On a GSR only, line card commands can be executed from the RP using the following syntax: execute [slot slot-number | all] command.

The command argument is any of the line card show commands, such as show ip mds summary and show ip mds forward.

Examples

The following is sample output from the show ip mds forwarding command:

Router# show ip mds forwarding

IP multicast MDFS forwarding information and statistics:
Flags: N - Not MDFS switchable, F - Not all MDFS switchable, O - OIF Null
R - In-ratelimit, A - In-access, M - MTU mismatch, P - Register set

Interface state: Interface, Next-Hop, Mac header

(*, 224.2.170.73),
Incoming interface: Null
Pkts: 0, last used: never, Kbps: 0, fast-flags: N
Outgoing interface list: Null

(128.97.62.86, 224.2.170.73) [31]
Incoming interface: Fddi3/0/0
Pkts: 3034, last used: 00:00:00, Kbps: 0, fast-flags: M
Outgoing interface list:

Table 20 describes the significant fields shown in the display.

Table 20 show ip mds forwarding Field Descriptions

Field

Description

(128.97.62.86, 224.2.170.73) [31])

Source and group addresses. The number in brackets is the hash bucket for the route.

Incoming interface:

Expected interface for a multicast packet from the source. If the packet is not received on this interface, it is discarded.

Pkts

Total number of packets switched by that entry.

last used:

Time when this MFIB entry was used to switch a packet.

Kbps:

Kilobits per second of the switched traffic.

Outgoing interface list:

Interfaces through which packets will be forwarded.

show ip mds interface

To display Multicast Distributed Switching (MDS) information for all the interfaces on the line card, use the show ip mds interface command in user EXEC or privileged EXEC mode.

show ip mds interface [vrf vrf-name]
Syntax Description

vrf

(Optional) Supports the Multicast Virtual Private Network (VPN) routing/forwarding instance (VRF).

vrf-name

(Optional) Name assigned to the VRF.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.0

This command was introduced.

11.2(11)GS

This command was integreated into Cisco IOS Release 11.2(11)GS.

12.0(23)S

The vrf keyword and vrf-name argument were added.

12.2(13)T

This command was integrated into Cisco IOS Release 12.2(13)T.

Examples

The following is sample output from the show ip mds interface command.

Router# show ip mds interface

Interface SW-Index HW-Index HW IDB FS Vector VRF
Ethernet1/0/0 2 1 0x60C2DB40 0x602FB7A4 default
Ethernet1/0/1 3 2 0x60C32280 0x603D52B8 default
Ethernet1/0/2 4 3 0x60C35E40 0x602FB7A4 default
Ethernet1/0/3 5 4 0x60C39E60 0x603D52B8 default
Ethernet1/0/4 6 5 0x60C3D780 0x602FB7A4 default
Ethernet1/0/5 7 6 0x60C41140 0x602FB7A4 default
Ethernet1/0/6 8 7 0x60C453A0 0x602FB7A4 default
Ethernet1/0/7 9 8 0x60C48DC0 0x602FB7A4 default
POS2/0/0 10 9 0x0 default
POS3/0/0 11 10 0x0 default
Virtual-Access1 13 11 0x0 default
Loopback0 14 12 0x0 default
Tunnel0 15 23 0x61C2E480 0x603D52B8 vrf1
Tunnel1 16 24 0x61C267E0 0x603D52B8 vrf2
Ethernet1/0/3.1 17 4 0x60C39E60 0x603D52B8 vrf1
Ethernet1/0/3.2 18 4 0x60C39E60 0x603D52B8 vrf2

Table 21 describes the significant fields shown in the display.

Table 21 show ip mds interface Field Descriptions

Field

Description

Interface

The specified interface.

SW-Index

Software index.

HW-Index

Hardware index.

HW IDB

Hardware interface description block.

VRF

VPN routing/forwarding instance.

show ip mds stats

To display switching statistics or line card statistics for multicast distributed switching (MDS), use the show ip mds stats command in user EXEC or privileged EXEC mode.

show ip mds stats [switching | linecard]
Syntax Description

switching

(Optional) Displays switching statistics.

linecard

(Optional) Displays line card statistics.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.2(11)GS

This command was introduced.

Usage Guidelines

Use this command on the Route Processor (RP).

Examples

The following is sample output from the show ip mds stats command used with the switching keyword:

Router# show ip mds stats switching

Slot Total Switched Drops RPF Punts Failures
(switch/clone)
1 0 0 0 0 4 0/0
3 20260925 18014717 253 93 2247454 1/0

Table 22 describes the significant fields in the display.

Table 22 show ip mds stats switching Field Descriptions

Field

Description

Slot

Slot number for the line card.

Total

Total number of packets received.

Switched

Total number of packets switched.

Drops

Total number of packets dropped.

RPF

Total number of packets that failed RPF lookup.

Punts

Total number of packets sent to the RP because the line card could not switch them.

Failures (switch/clone)

Times that the RP tried to switch but failed because of lack of resources or clone for the RSP only; failed to get a packet clone.

The following is sample output from the show ip mds stats command with the linecard keyword:

Router# show ip mds stats linecard

Slot Status IPC(seq/max) Q(high/route) Reloads
1 active 10560/10596 0/0 9
3 active 11055/11091 0/0 9

show ip mds summary

To display a summary of the MFIB table for multicast distributed switching (MDS), use the show ip mds summary command in user EXEC or privileged EXEC mode.

show ip mds summary
Syntax Description

This command has no arguments or keywords.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

11.2(11)GS

This command was introduced.

Usage Guidelines

Use this command on a line card. On a GSR only, line card commands can be executed from the RP using the following syntax:

execute [slot slot-number | all] command

The command argument is any of the line card show commands, such as show ip mds summary and show ip mds forward.

Examples

The following is sample output from the show ip mds summary command:

Router# show ip mds summary

IP multicast MDFS forwarding information and statistics:
Flags: N - Not MDFS switchable, F - Not all MDFS switchable, O - OIF Null
R - In-ratelimit, A - In-access, M - MTU mismatch, P - Register set

Interface state: Interface, Next-Hop, Mac header

(*, 224.2.170.73),
Incoming interface: Null
Pkts: 0, last used: never, Kbps: 0, fast-flags: N
(128.97.62.86, 224.2.170.73) [31]
Incoming interface: Fddi3/0/0
Pkts: 3045, last used: 00:00:03, Kbps: 0, fast-flags: M
(128.223.3.7, 224.2.170.73) [334]
Incoming interface: Fddi3/0/0
Pkts: 0, last used: never, Kbps: 0, fast-flags: M

Table 23 describes the significant fields in the display.

Table 23 show ip mds summary Field Descriptions

Field

Description

(128.97.62.86, 224.2.170.73) [31]

Source and group addresses. The number in brackets is the hash bucket for the route.

Incoming interface

Expected interface for a multicast packet from the source. If the packet is not received on this interface, it is discarded.

Pkts

Total number of packets switched by that entry.

last used

Time when this MFIB entry was used to switch a packet.

Kbps

Kilobits per second of the switched traffic.

show pxf accounting

To show Parallel eXpress Forwarding (PXF) switching statistics for individual interfaces, use the show pxf accounting command in user EXEC or privileged EXEC mode.

show pxf accounting interface [slot/port]
Syntax Description

interface

Specifies the type of interface to display.

slot

(Optional) Backplane slot number. On the Cisco 7200 VXR series routers, the value can be from 0 to 6.

port

(Optional) Port number of the interface. On the Cisco 7200 VXR series routers, the value can be from 0 to 5.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.1(1)E

This command was introduced.

12.1(5)T

This command was integrated into Cisco IOS Release 12.1(5)T.

Usage Guidelines

You can display information about the following interface types using the show pxf accounting command, as shown in Table 24:

Table 24 show pxf accounting Interface Types

Keyword

Interface Type

atm

ATM interface.

ethernet

Ethernet interface.

fastethernet

FastEthernet interface.

hssi

High Speed Serial interface.

null

Null interface.

pos

Packet-over-SONET interface.

serial

Synchronous serial interface.

summary

PXF summary statistics.

Examples

The following is sample output from the show pxf accounting ? command:

Router# show pxf accounting ?

  ATM           ATM interface
  Ethernet     IEEE 802.3
  FastEthernet  FastEthernet IEEE 802.3
  Hssi          High Speed Serial Interface
Null     Null interface
POS     Packet over Sonet
Serial     Serial
summary     PXF summary statistics

The following is sample output from the show pxf accounting ethernet command using an Ethernet interface in slot 4 on a Cisco 7200 VXR series router:

Router# show pxf accounting ethernet 4/0

Interface Pkts In Chars In Pkts Out Chars Out Punted     Dropped
Ethernet4/0    0 0 122 11490 4 0

The following is sample output from the show pxf accounting null command using a null interface in slot 0 on a Cisco 7200 VXR series router:

Router# show pxf accounting null 0/0

Interface Pkts In Chars In Pkts Out Chars Out Punted Dropped
nu0/0 0 0 0 0 4932 0

The following is sample output from the show pxf accounting pos command using a Packet-over-SONET interface in slot 4 on a Cisco 7200 VXR series router:

Router# show pxf accounting pos

Interface Pkts In Chars In Pkts Out Chars Out Punted    Dropped
POS4/0 19       1064         0 0         44         0

The following is sample output from the show pxf accounting serial command using a serial interface in slot 5 on a Cisco 7200 VXR series router:

Router# show pxf accounting serial 5/0

Interface Pkts In Chars In Pkts Out Chars Out Punted    Dropped
Serial5/0 0 0 0 0 0       0
The following is sample output from the show pxf accounting summary command:

Router# show pxf accounting summary

Pkts Dropped RP Processed Ignored
Total 0 48360 0

PXF Statistic:
Packets RP -> PXF:
switch ip: 0
switch raw: 30048360
qos fastsend: 0
qos enqueue: 1938
Total: 30050298

Packets PXF -> RP:
qos pkts: 1938
fast pkts: 30000000
drops:total 0
punts:total 48360
" not IP : 40572
" CEF no adjacency : 7788
Total: 30050298

Packets ignored: 0 | ring space:
shadow ring full: 0 | shadow ring: 16384
in ring full: 0 | inring: 968
PXF inactive: 0

tx credits: 16230330 | delayed credits: 0
holdq enqueues: 0 | requeue drops: 0
interrupts: 40538 | interrupt misses: 1947
interrupt packets: 53326
pending read bytes: 0

Interface Pkts In Chars In Pkts Out Chars Out Punted Dropped
Fa0/0 0 0 30000000 1740000000 970 0
Et1/0 0 0 0 0 21309 0
Et1/1 0 0 0 0 0 0
Et1/2 0 0 0 0 0 0
Et1/3 0 0 0 0 0 0
Se2/0 0 0 0 0 963 0
Se2/1 0 0 0 0 0 0
Se2/2 0 0 0 0 0 0
Se2/3 0 0 0 0 0 0
Fa3/0 0 0 0 0 963 0
PO4/0 30000000 1440000000 0 0 963 0
AT5/0 0 0 0 0 23192 0
Vi1 0 0 0 0 0 0
Vt1 0 0 0 0 0 0
Vi2 0 0 0 0 0 0
Related Commands

Command

Description

show pxf crash

Displays PXF crash information.

show pxf feature

Displays the PXF routing feature tables for enabled PXF features.

show pxf interface

Displays a summary of the interfaces in the router and the PXF features or capabilities enabled on these interfaces.

show pxf crash

To show Parallel eXpress Forwarding (PXF) crash information, use the show pxf crash command in user EXEC or privileged EXEC mode.

show pxf crash
Syntax Description

This command has no arguments or keywords.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.1(1)E

This command was introduced.

12.1(5)T

This command was integrated into Cisco IOS Release 12.1(5)T.

Examples

The following is sample output from the show pxf crash command:

Router# show pxf crash

EX_Type = 0x80000000
EX_ID(b0~3,16~17) = 0x00400
CPU_EX_ID(b0~15) = 0x0004
IHB_EX_Type(b0~5) = 0x00
XRAM0(b0~13) = 0x00000
XRAM1(b0~13) = 0x00000
XRAM2(b0~13) = 0x00000
XRAM3(b0~13) = 0x00000
Pipeline:7FDEFD pdone[3210]:1F 17 17 1D

ICM0(b4~13) = 0x00000 ICM1(b4~13) = 0x00000
ICM2(b4~13) = 0x00010 ICM3(b4~13) = 0x00000
LOCK0(b0~4) = 0x00000 LOCK1(b0~4) = 0x00000
LOCK2(b0~4) = 0x00000 LOCK3(b0~4) = 0x00000
CPU0/2: SW EX Type=0x00000000 LBUS EX Type=0x00000081 HW EX
Type=0x00000400

CPU:row=0x0 column=0x2 cpu=0x2
PC:0000098E LR:0000087F CR:002C4C00
r0:00000000 r1:8001CEA0 r2:80784390 r3:00000000
r4:00005400 r5:80D3BA04 r6:80A7CA00 r7:00000004
r8:00000000 r9:00000008 r10:80092324 r11:800A6200
r12:00000033 r13:00000008 r14:00000000 r15:00000000
misr1a:00000000 misr1bhi:00000000 misr1blo:00000000 misr2hi:00000000
misr2lo:00000000 reserve:00000000 reserve:00000000 reserve:00000000
sisr1a:01000040 sisr1b:00000000 irhi:4402200F irlo:00000000
cAll:C20DE822 DCD1:00020400 DCD2:00000002 CNTL:00000000
TBuf intr 0:1111111F
TBuf intr 1:020FFFF0
TBuf intr 2:00003C80
TBuf intr 3:80000000
TBuf intr 4:00000400
Xram return:00000000
Icram return hi:80024E00
Icram return lo:800A4E00
TBuf addr 0:005E6800 TBuf sblock1 0:8078A374 TBuf sblock0 0:804FD600
TBuf addr 1:005E6800 TBuf sblock1 1:8078A374 TBuf sblock0 1:804FD600
TBuf addr 2:005E6800 TBuf sblock1 2:8078A374 TBuf sblock0 2:804FD600
TBuf addr 3:005E6800 TBuf sblock1 3:8078A374 TBuf sblock0 3:804FD600
TBuf addr 4:005E6800 TBuf sblock1 4:8078A374 TBuf sblock0 4:804FD600
TBuf addr 5:005E6800 TBuf sblock1 5:8078A374 TBuf sblock0 5:804FD600
TBuf addr 6:005E6800 TBuf sblock1 6:8078A374 TBuf sblock0 6:804FD600
TBuf addr 7:005E6800 TBuf sblock1 7:8078A374 TBuf sblock0 7:804FD600
show pxf feature cef vrf

To display the routing feature tables for Virtual Private Network (VPN) routing/forwarding instances (VRFs) on the Parallel eXpress Forwarding (PXF) path, use the show pxf feature cef vrf command in privileged EXEC mode.

show pxf feature cef vrf vpn-name
Syntax Description

vpn-name

Name of the VPN to display.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.2(15)B

This command was introduced.

12.3(4)T

This command was integrated into Cisco IOS Release 12.3(4)T.

Usage Guidelines

Use this command to display VRF PXF routing feature tables for a specified VPN for Cisco Express Forwarding (CEF). This command also displays information about prefix and MTRIE resource usage.

Examples

The following is sample output for the show pxf feature cef vrf command when it is used to display information about VRF vpn1:

Router# show pxf feature cef vrf vpn1

Shadow 8-8-4-4-8 PXF Mtrie:
51 leaves, 2448 leaf bytes, 92 nodes, 56352 node bytes
10 invalidations
61 prefix updates
refcounts: 3666 leaf, 3733 node

Prefix/Length Refcount Parent Address Shadow
0.0.0.0/32 3 0xC0047218 0x62CAF2E8
5.0.0.0/16 558 0xC0047278 0x62CAF108
5.0.0.0/32 3 5.0.0.0/16 0xC0047268 0x62CAEE08
5.0.0.1/32 3 5.0.0.0/16 0xC0047260 0x62CAEA18
5.0.0.2/32 3 5.0.0.0/16 0xC0047388 0x62CAEA48
5.0.255.255/32 3 5.0.0.0/16 0xC0047270 0x62CAF0D8
30.1.0.0/16 288 0xC0047360 0x62CAEB38
30.1.1.1/32 3 30.1.0.0/16 0xC0047350 0x62CAEB98
70.0.0.0/32 3 0xC00472C0 0x62CAEEF8
70.1.1.1/32 3 0xC0047358 0x62CAEB68
70.1.1.2/32 3 0xC0047368 0x62CAEB08
70.1.1.3/32 3 0xC0047370 0x62CAEAD8
70.1.1.4/32 3 0xC0047378 0x62CAEAA8
70.1.1.5/32 3 0xC0047380 0x62CAEA78
224.0.0.0/24 3 0xC0047228 0x62CAF288
255.255.255.255/32 3 0xC0047220 0x62CAF2B8
========================================
5 routes with less specific overlapping parent route

Table 25 describes the significant fields shown in the display.

Table 25 show pxf feature cef vrf Field Descriptions

Field

Description

Shadow 8-8-4-4-8 PXF Mtrie:

MTRIE lookup table index structures.

51 leaves

All created leaves for all MTRIEs.

2448 leaf bytes

Leaf byte counter. When a new leaf is created, the leaf byte counter is incremented by the size of the leaf structure.

92 nodes

All created nodes for all MTRIEs.

56352 node bytes

Node byte counter. When a new node is created, the node byte counter is incremented.

10 invalidations

Invalidations counter. When a route (represented by a leaf) is deleted from an MTRIE, the invalidations counter is incremented. This counter includes all MTRIEs.

61 prefix updates

IP prefix counter. When an IP prefix (represented by a leaf) is added to the MTRIE, the IP prefix counter is incremented. This counter includes all MTRIEs.

refcounts:

Counters associated with references between leaves.

3666 leaf

MTRIEs have a leaf lock and a leaf free function. The leaf lock function increments the leaf refcount. The leaf free function decrements the leaf refcount. The leaf lock and leaf free functions prevent a leaf from being freed (deleted) while the leaf is still being referenced. This counter includes all MTRIEs.

3733 node

Node counter. When a child node is added to another node, the node to which the child node is added becomes a parent node. The node counter is decremented when a child node is deleted. This counter includes all MTRIEs.

Prefix/Length

The IP address and subnet mask of a leaf.

Refcount

The number of leaves that reference a specified leaf. The refcount counter is incremented when the leaf lock function is called and decremented when the leaf free function is called.

Parent

When you add a less specific route to a more specific route, the more specific route has a back pointer that points to the less specific route.

Address

The address of the memory for the specified leaf.

Shadow

The shadow address in Route Processor memory for the specified leaf.

Related Commands

Command

Description

show pxf feature cef

Displays PXF routing feature tables for CEF.

show pxf feature nat

Displays PXF routing feature tables for NAT.

show pxf feature cef

To display Parallel eXpress Forwarding (PXF) routing feature tables for Cisco Express Forwarding (CEF), use the show pxf feature cef command in user EXEC or privileged EXEC mode.

show pxf feature cef entry
Syntax Description

entry

Display the PXF entry.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.1(1)E

This command was introduced.

12.1(5)T

This command was integrated into Cisco IOS Release 12.1(5)T.

Examples

The following is sample output from the show pxf feature cef command:

Router# show pxf feature cef entry

Shadow 16-4-4-8 PXF Mtrie:
41 leaves, 1968 leaf bytes, 15 nodes, 267000 node bytes
5 invalidations
46 prefix updates
refcounts: 66746 leaf, 66720 node

Prefix/Length Refcount Parent
0.0.0.0/0 62282
0.0.0.0/32 3 0.0.0.0/0
171.69.12.128/27 34 0.0.0.0/0
171.69.12.128/32 3 171.69.12.128/27
171.69.12.129/32 3 171.69.12.128/27
171.69.12.130/32 3 171.69.12.128/27
171.69.12.131/32 3 171.69.12.128/27
171.69.12.147/32 3 171.69.12.128/27
Related Commands

Command

Description

show pxf feature nat

Displays PXF routing feature tables for NAT.

show pxf feature nat

To display Parallel eXpress Forwarding (PXF) routing tables for Network Address Translation (NAT), use the show pxf feature nat command in user EXEC or privileged EXEC mode.

show pxf feature nat [entry | stat | tcp]
Syntax Description

entry

Displays NAT information.

stat

Displays NAT processing information.

tcp

Displays NAT TCP logging information.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.1(1)E

This command was introduced.

12.1(5)T

This command was integrated into Cisco IOS Release 12.1(5)T.

Examples

The following is sample output from the show pxf feature nat command:

Router# show pxf feature nat

--- 171.69.12.175 192.168.0.129 --- ---
--- 171.69.12.163 192.168.0.7 --- ---
--- 171.69.12.161 192.168.0.13 --- ---
--- 171.69.12.162 192.168.0.3 --- ---
--- 171.69.12.165 192.168.0.8 --- ---
--- 171.69.12.168 192.168.0.14 --- ---
--- 171.69.12.170 192.168.0.12 --- ---
--- 171.69.12.166 192.168.0.15 --- ---
--- 171.69.12.164 192.168.0.16 --- ---
Related Commands

Command

Description

show pxf feature cef

Displays PXF routing feature tables for CEF.

show pxf interface

To show a summary of the interfaces on the router and the Parallel eXpress Forwarding (PXF) features or capabilities enabled on these interfaces, use the show pxf interface command in user EXEC or privileged EXEC mode.

show pxf interface
Syntax Description

This command has no arguments or keywords.

Command Modes

User EXEC
Privileged EXEC

Command History

Release

Modification

12.1(3a)E

This command was introduced.

12.1(5)T

This command was integrated into Cisco IOS Release 12.1(5)T.

Examples

The following is sample output from the show pxf interface command:

Router# show pxf interface

Intf I/f #  Attributes
Fa0/0 3 Raw, Encap, QoS(Cr 0, Thrsh 2, Max 101)
Et1/0 4 Raw, Encap
Et1/1 5 Raw, Encap, QoS(Cr 0, Thrsh 2, Max 13)
Et1/2 6 Raw, Encap
Et1/3 7 Raw, Encap
Se2/0 8 Raw, Encap, QoS(Cr 0, Thrsh 2, Max 5)
Se2/1 9 Raw, Encap, QoS(Cr 0, Thrsh 2, Max 5)
Se2/2 10 Raw, Encap, QoS(Cr 0, Thrsh 2, Max 5)
Se2/3 11 Raw, Encap, QoS(Cr 0, Thrsh 2, Max 5)
Fa3/0 12 Raw, Encap
PO4/0 13 Raw, Encap
AT5/0 14 Raw, Encap
Related Commands

Command

Description

show pxf feature

Displays the PXF routing feature tables for enabled PXF features.

show route-map ipc

To display counts of the one-way route map interprocess communication (IPC) messages sent from the rendezvous point (RP) to the Versatile Interface Processor (VIP) when NetFlow policy routing is configured, use the show route-map ipc command in user EXEC or privileged EXEC mode.

show route-map ipc
Syntax Description

This command has no arguments or keywords.

Command Modes

Privileged EXEC

Command History

Release

Modification

12.0(3)T

This command was introduced.

Usage Guidelines

This command displays the counts of one-way route map IPC messages from the RP to the VIP when NetFlow policy routing is configured. If you execute this command on the RP, the messages are shown as "Sent." If you execute this command on the VIP console, the IPC messages are shown as "Received."

Examples

The following is sample output of the show route-map ipc command when it is executed on the RP:

Router# show route-map ipc

Route-map RP IPC Config Updates Sent
Name: 4
Match access-list: 2
Match length: 0
Set precedence: 1
Set tos: 0
Set nexthop: 4
Set interface: 0
Set default nexthop: 0
Set default interface: 1
Clean all: 2

The following is sample output of the show route-map ipc command when it is executed on the VIP:

Router# show route-map ipc

Route-map LC IPC Config Updates Received
Name: 4
Match access-list: 2
Match length: 0
Set precedence: 1
Set tos: 0
Set nexthop: 4
Set interface: 0
Set default nexthop: 0
Set default interface: 1
Clean all: 2
Table 26 describes the significant fields shown in the display.

Table 26 show route-map ipc Field Descriptions

Field

Description

Route-map RP IPC Config Updates Sent

Indicates that IPC messages are being sent from the RP to the VIP.

Name:

Number of IPC messages sent about the name of the route map.

Match access-list:

Number of IPC messages sent about the access list.

Match length

Number of IPC messages sent about the length to match.

Set precedence:

Number of IPC messages sent about the precedence.

Set tos:

Number of IPC messages sent about the type of service (ToS).

Set nexthop:

Number of IPC messages sent about the next hop.

Set interface:

Number of IPC messages sent about the interface.

Set default nexthop:

Number of IPC messages sent about the default next hop.

Set default interface:

Number of IPC messages sent about the default interface.

Clean all:

Number of IPC messages sent about clearing the policy routing configuration from the VIP. When dCEF is disabled and reenabled, the configuration related to policy routing must be removed (cleaned) from the VIP before the new information is downloaded from the RP to the VIP.

Related Commands

Command

Description

set ip next-hop verify-availability

Configures policy routing to verify if the next hops of a route map are CDP neighbors before policy routing to that next hop.

summary	(Optional) Displays a summary of CEF adjacency information.
interface	(Optional) Interface type.
interface-number	(Optional) Specifies the module and port number. Valid values depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 2 to 13, and valid values for the port number are from 1 to 48. For line cards, you must specify the linecard if_number (interface number). Use the show cef interface command to obtain linecard if_numbers. null interface-number specifies the null interface; the valid value is 0. port-channel number specifies an Ethernet channel of interfaces; valid values are a maximum of 64 values from 1 to 256.
prefix	(Optional) Specifies an IP address or IPv6 address.
connectionid id	(Optional) Specifies the client connection identification number.
link {ipv4 \| ipv6 \| mpls}	(Optional) Specifies the link type (IP, IPv6, or MPLS traffic) of the adjacency.
detail	(Optional) Displays the protocol detail and timer information.

Release	Modification
11.2GS	This command was introduced.
11.1CC	Multiple platform support was added.
12.0(7)XE	Support was added for the Cisco 7600 series routers.
12.1(1)E	Support for the Cisco 7600 series routers was integrated into Cisco IOS Release 12.1(1)E.
12.1(3a)E3	The number of valid values for port-channel number changed.
12.1(5c)EX	This command was modified to include Layer 3 information.
12.1(11b)E	The pos, atm, and ge-wan keywords were added.
12.2(8)T	The detail keyword output was modified to show the epoch value for each entry of the adjacency table. The summary keyword output was modified to show the table epoch for the adjacency table.
12.2(14)SX	Support for this command was introduced on the Supervisor Engine 720.
12.2(25)S	This command was integrated into Cisco IOS Release 12.2(25)S and updated with new keywords.

Field	Description
Protocol	Routed protocol to which the adjacency is related.
Interface	Outgoing interface associated with the adjacency.
Address	The address can represent one of these addresses: •Next-hop address •Point-to-point address The number (in parentheses) that follows this field indicates the number of internal references to the adjacency.
Table epoch	Table epoch value at the time when the adjacency was last modified.

Command	Description
clear adjacency	Clears the CEF adjacency table.
clear arp-cache	Deletes all dynamic entries from the ARP cache.
debug adjacency	Enables the display of information about the adjacency database.
show mls cef adjacency	Displays information about the hardware Layer 3 switching adjacency node.

Release	Modification
11.2 GS	This command was introduced to support the Cisco 12012 Internet router.
11.1 CC	Multiple platform support was added.
12.0(22)S	The display output for this command was modified to include support for Cisco Express Forwarding for IPv6 (CEFv6) and distributed CEF for IPv6 (dCEFv6) packets.
12.0(23)S	This command was integrated into Cisco IOS Release 12.0(23)S.
12.2(13)T	This command was integrated into Cisco IOS Release 12.2(13)T. Previously there was a show cef command, and drop was a keyword of that command.
12.2(14)S	This command was integrated into Cisco IOS Release 12.2(14)S.

Field	Description
Slot	The slot number on which the packets were received.
Encap_fail	Indicates the number of packets dropped after exceeding the limit for packets punted to the processor due to missing adjacency information (CEF throttles packets passed up to the process level at a rate of one packet per second).
Unresolved	Indicates the number of packets dropped due to an unresolved prefix in the Forwarding Information Base (FIB) table.
Unsupported	Indicates the number of packets fast-dropped by CEF (drop adjacency).
No_route	Indicates the number of packets dropped due to a missing prefix in the FIB table.
No_adj	Indicates the number of packets dropped due to incomplete adjacency.
ChksumErr	Indicates the number of IPv4 packets received with a checksum error. Note This field is not supported for IPv6 packets.

Command	Description
show cef interface	Displays CEF-related interface information.
show ipv6 cef	Displays entries in the IPv6 FIB.

Release	Modification
12.0(23)S	This command was introduced.
12.0(24)S	This command was integrated into Cisco IOS Release 12.0(24)S.
12.2(13)T	This command was integrated into Cisco IOS Release 12.2(13)T.

Field	Description
Time	Time that the event occurred.
Event	Type of event that occurred.
Details	Detailed description of the event.

Command	Description
show cef drop	Displays a list of which packets each line card dropped.
show cef interface	Displays CEF-related interface information.
show cef linecard	Displays CEF-related interface information by line card.

type number	(Optional) Interface type and number. No space is required between the interface type and number.
input	(Optional) Displays Border Gateway Protocol (BGP) accounting policy statistics for traffic that is traveling through an input interface.
output	(Optional) Displays BGP accounting policy statistics for traffic that is traveling through an output interface.

Release	Modification
12.0(9)S	This command was introduced on the Cisco 12000 series Internet routers.
12.0(14)ST	This command was integrated into Cisco IOS Release 12.0(14)ST, and the statistics keyword was added.
12.2(13)T	This command was integrated into Cisco IOS Release 12.2(13)T.
12.0(22)S	The input and output keywords were added. The display output was modified to include support for CEF for IPv6 (CEFv6) and distributed (dCEFv6) interface information. Output fields that support Border Gateway Protocol (BGP) policy accounting were added for the Cisco 7200 series and Cisco 7500 series platforms.
12.3(4)T	Changes to this command was integrated into Cisco IOS Release 12.3(4)T.
12.2(14)S	This command was integrated into Cisco IOS Release 12.2(14)S.
12.2(25)S	The internal keyword was added.

Field	Description
Index	Traffic index set with the route-map command.
Packets	Number of packets switched that match the index definition.
Bytes	Number of bytes switched matching the index definition.

Command	Description
route-map (IP)	Defines the conditions for redistributing routes from one routing protocol to another, or enables policy routing.
show cef drop	Displays which packets the line cards dropped, or displays which packets were not express forwarded.
show cef linecard	Displays CEF-related interface information by line card.

type number	(Optional) Interface type and number. No space is required between the interface type and number.
statistics	(Optional) Displays switching statistics for an interface or interfaces.
detail	(Optional) Displays detailed CEF information for the specified interface type and number.
internal	(Optional) Displays internal CEF interface status and configuration.
brief	(Optional) Summarizes the CEF interface state.
policy-statistics	(Optional) Displays Border Gateway Protocol (BGP) policy statistical information for a specific interface or for all interfaces.
input	(Optional) Displays BGP accounting policy statistics for traffic that is traveling through an input interface.
output	(Optional) Displays BGP accounting policy statistics for traffic that is traveling through an output interface.

Field	Description
FastEthernet1/0/0 is up	Indicates type, number, and status of the interface.
Internet address is	Internet address of the interface.
ICMP redirects are always sent	Indicates how packet forwarding is configured.
Per packet load-sharing is disabled	Indicates status of load sharing on the interface.
IP unicast RPF check is disabled	Indicates status of IP unicast Reverse Path Forwarding (RPF) check on the interface.
Inbound access list is not set	Indicates the number or name of the inbound access list if one is applied to this interface. Also indicates whether list is set or not.
Outbound access list is not set	Indicates the number or name of the outbound access list if one is applied to this interface. Also indicates whether list is set or not.
IP policy routing is disabled	Indicates the status of IP policy routing on the interface.
BGP based policy accounting on input is enabled	Indicates the status of BGP policy accounting on the input interface.
BGP based policy accounting on output is disabled	Indicates the status of BGP policy accounting on the output interface.
Hardware idb is Ethernet1/0/0	Interface type and number configured.
Fast switching type	Used for troubleshooting; indicates switching mode in use.
Interface type	Indicates interface type.
IP Distributed CEF switching enabled	Indicates whether distributed CEF is enabled on this interface. (Cisco 7500 and 12000 series Internet routers only.)
IP Feature Fast switching turbo vector	Indicates IP fast switching type configured.
IP Feature CEF switching turbo vector	Indicates IP feature CEF switching type configured.
Input fast flags	Indicates the input status of various switching features: •0x0001 (input Access Control List [ACL] enabled) •0x0002 (policy routing enabled) •0x0004 (input rate limiting) •0x0008 (MAC/Prec accounting) •0x0010 (DSCP/PREC/QOS GROUP) •0x0020 (input named access lists) •0x0040 (NAT enabled on input) •0x0080 (crypto map on input) •0x0100 (QPPB classification) •0x0200 (inspect on input) •0x0400 (input classification) •0x0800 (casa input enable) •0x1000 (Virtual Private Network [VPN] enabled on a swidb) •0x2000 (input idle timer enabled) •0x4000 (unicast Reverse Path Forwarding [RPF] check) •0x8000 (per-address ACL enabled) •0x10000 (deaggregating a packet) •0x20000 (GPRS enabled on input) •0x40000 (URL RenDezvous) •0x80000 (QoS classification) •0x100000 (FR switching on interface) •0x200000 (WCCP redirect on input) •0x400000 (input classification)
Output fast flags	Indicates the output status of various switching features, as follows: •0x0001 (output ACL enabled) •0x0002 (IP accounting enabled) •0x0004 (WCC redirect enabled interface) •0x0008 (rate limiting) •0x0010 (MAC/Prec accounting) •0x0020 (DSCP/PREC/QOS GROUP) •0x0040 (D-QOS classification) •0x0080 (output named access lists) •0x0100 (NAT enabled on output) •0x0200 (TCP intercept enabled) •0x0400 (crypto map set on output) •0x0800 (output firewall) •0x1000 (RSVP classification) •0x2000 (inspect on output) •0x4000 (QoS classification) •0x8000 (QoS preclassification) •0x10000 (output stile)
ifindex 7/(7)	Indicates the SNMP ifindex for this interface.
Slot 1 Slot unit 0 VC -1	The slot number and slot unit.
Transmit limit accumulator	Indicates the maximum number of packets allowed in the transmit queue.
IP MTU	The MTU size set on the interface.

Command	Description
clear cef linecard	Clears CEF information from line cards.
route-map (IP)	Defines the conditions for redistributing routes from one routing protocol to another, or enables policy routing.
show cef	Displays information about packets forwarded by CEF.
show cef drop	Displays which packets the line cards dropped, or displays which packets were not express forwarded.
show cef linecard	Displays CEF-related interface information by line card.

slot-number	(Optional) Slot number containing the line card about which to display CEF-related information. When you omit this argument, information about all line cards is displayed.
detail	(Optional) Displays detailed CEF information for the specified line card.
internal	(Optional) Displays internal CEF information for the specified line card.

Field	Description
Table name	Name of the CEF table.
Version	Number of the Forwarding Information Base (FIB) table version.
Prefix-xdr	Number of prefix IPC information elements XDRs processed.
Status	State of the CEF table.
Slot	Slot number of the line card.
MsgSent	Number of IPC messages sent.
XDRSent	XDRs packed into IPC messages sent from the Route Processor (RP) to the line card.
Window	Size of the IPC window between the line card and the RP.
LowQ/MedQ/HighQ	Number of XDR elements in the Low, Medium, and High priority queues.
Flags	Indicates the status of the line card. States are... •up—Line card is up. •sync—Line card is in synchronization with the main FIB. •FIB is repopulated on the line card. •reset—Line card FIB is reset. •reloading—Line card FIB is being reloaded. •disabled—Line card is disabled.
CEF-XDR	Number of CEF XDR messages processed.
I/Fs	Interface numbers.

Field	Description
Expiration	Seconds in which the timers will expire.
Type	Identification of the timer.

Field	Description
Fddi3/0/0	Interface for which information is shown.
Switching path	Column heading for the various switching paths below it.
Pkts In	Number of packets received in each switching mechanism.
Chars In	Number of characters received in each switching mechanism.
Pkts Out	Number of packets sent out each switching mechanism.
Chars Out	Number of characters sent out each switching mechanism.

Field	Description
Throttle count	Number of times input packet processing was throttled on this interface.
Drops	RP—Number of packets dropped for input congestion. SP—Number of packets flushed by external throttling.
SPD Flushes	Fast—Number of packets flushed by selective packet discard on RP. SSE—Number of packets flushed by external selective packet discard.
SPD Aggress	Fast—Input packets dropped by aggressive selective packet discard.
SPD Priority	Inputs—Number of priority packets received. Drops—Number of priority packets dropped.
Protocol	Name of the protocol for which packet switching information is displayed.
Switching Path	Indicates the traffic switching path.
Pkts In	Number of incoming packets.
Char In	Number of incoming bytes.
Pkts Out	Number of outgoing packets.
Char Out	Number of outgoing bytes.
Process	Process switching. With this type of switching, an incoming packet is associated with a destination network or subnet entry in the routing table located in main memory. Process switching is a scheduled process that is performed by the system processor.
Cache misses	Packets that were forwarded through the process level (for which there was no entry in fast switching cache).
Fast	Fast switching. With this type of switching, an incoming packet matches an entry in the fast-switching cache located in main memory. Fast switching is done via asynchronous interrupts, which are handled in real time. Fast switching allows higher throughput by switching a packet using a cache created by previous packets.
Auton	Autonomous switching. With this type of switching, an incoming packet matches an entry in the autonomous-switching cache located on the interface processor. Autonomous switching provides faster packet switching by allowing the ciscoBus controller to switch packets independently without having to interrupt the system processor. It is available only on Cisco 7000 series routers and in AGS+ systems with high-speed network controller cards.
SSE	Silicon switching engine switching. With this type of switching, an incoming packet matches an entry in the silicon-switching cache located in the silicon switching engine (SSE) of the Silicon Switch Processor (SSP) module. This module is available only on Cisco 7000 series routers. Silicon switching provides very fast, dedicated packet switching by allowing the SSE to switch packets independently without having to interrupt the system processor.

prefix	(Optional) Displays only the entries in the cache that match the prefix and mask combination.
mask	(Optional) Displays only the entries in the cache that match the prefix and mask combination.
type	(Optional) Displays only the entries in the cache that match the interface type and number combination.
number	(Optional) Displays only the entries in the cache that match the interface type and number combination.

Field	Description
IP routing cache version	Version number of this table. This number is incremented any time the table is flushed.
entries	Number of valid entries.
bytes	Number of bytes of processor memory for valid entries.
hash overflows	Number of times autonomous switching cache overflowed.
Minimum invalidation interval	Minimum time delay between cache invalidation request and actual invalidation.
maximum interval	Maximum time delay between cache invalidation request and actual invalidation.
quiet interval	Length of time between cache flush requests before the cache will be flushed.
threshold <n> requests	Maximum number of requests that can occur while the cache is considered quiet.
Invalidation rate <n> in last <m> seconds	Number of cache invalidations during the last <m> seconds.
0 in last 3 seconds	Number of cache invalidation requests during the last quiet interval.
Last full cache invalidation occurred <hh:mm:ss> ago	Time since last full cache invalidation was performed.
Prefix/Length	Network reachability information for cache entry.
Age	Age of cache entry.
Interface	Output interface type and number.
MAC Header	Layer 2 encapsulation information for cache entry.

vrf	(Optional) A Virtual Private Network (VPN) routing and forwarding (VRF) instance.
vrf-name	(Optional) Name assigned to the VRF.
type number	Interface type and number for which to display forwarding information base (FIB) entries.
ip-prefix	Next hop IP prefix, in dotted decimal format (A.B.C.D).
detail	(Optional) Displays detailed information for each CEF adjacency type entry.
discard	Discard adjacency. Sets up for loopback interfaces. Loopback IP addresses are receive entries in the FIB table.
drop	Drop adjacency. Packets forwarded to this adjacency are dropped.
glean	Glean adjacency. Represents destinations on a connected interface for which no ARP cache entry exists.
null	Null adjacency. Formed for the Null0 interface. Packets forwarded to this adjacency are dropped.
punt	Punt adjacency. Represents destinations that cannot be switched in the normal path and that are punted to the next fastest switching vector.

Release	Modification
11.1 CC	This command was introduced.
12.0(5)T	The vrf keyword was added.

Field	Description
Prefix	Destination IP prefix.
Next Hop	Next hop IP address.
Interface	Next hop interface.

Release	Modification
12.0(15)S	This command was introduced.
12.2(2)T	This command was integrated into Cisco IOS Release 12.2(2)T.

Field	Description
+00:00:00.000	Time stamp of the IP CEF event.
[Default-table]	Type of VPN routing and forwarding (VRF) table for this event entry.
.../*	All IP prefixes.
9.1.80.194/32	IP prefix associated with the event.
FIB insert in mtrie	IP prefix insert in the FIB table event.
NBD up	IP prefix up event.
FIB remove	FIB entry remove event.
[Ignr]	CEF ignored event.
[OK]	CEF processed event.

Command	Description
ip cef table consistency-check	Enables CEF table consistency checker types and parameters.
ip cef table event-log	Controls CEF table event-log characteristics.