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This chapter describes the commands available to configure an Asynchronous Transfer Mode (ATM) interface.
For ATM configuration information and examples, refer to the chapter entitled "Configuring ATM" in the Router Products Configuration Guide.
To change the maximum number of high-priority cells coming from the destination router to the source router at the burst level on the switched virtual circuit (SVC), use the atm backward-max-burst-size-clp0 map-class configuration command. The no form of this command restores the default.
atm backward-max-burst-size-clp0 cell-count| cell-count | Maximum number of high-priority cells coming from the destination router at the burst level. Default is -1. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp0 indicates that this command affects only cells with a cell loss priority (CLP) of 0 (high-priority cells).
The following example sets the maximum number of high-priority cells coming from the destination router at the burst level to 800 cells:
atm backward-max-burst-size-clp0 800
To change the maximum number of low-priority cells coming from the destination router to the source router at the burst level on the SVC, use the atm backward-max-burst-size-clp1 map-class configuration command. The no form of this command restores the default value.
atm backward-max-burst-size-clp1 cell-count| cell-count | Maximum number of low-priority cells coming from the destination router at the burst level. Default is -1. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp1 indicates that this command affects only cells with a cell loss priority (CLP) of 1 (low-priority cells).
The following example sets the maximum number of low-priority cells coming from the destination router at the burst level to 100,000:
atm backward-max-burst-size-clp1 100000
To change the peak rate of high-priority cells coming from the destination router to the source router on the SVC, use the atm backward-peak-cell-rate-clp0 map-class configuration command. The no form of this command restores the default.
atm backward-peak-cell-rate-clp0 rate| rate | Maximum rate in kilobits per second (kbps) that this SVC can receive high-priority cells from the destination router. Default is -1. Maximum upper range is 155,000 kbps. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp0 indicates that this command affects only cells with a cell loss priority (CLP) of 0 (high-priority cells).
The following example sets the peak rate for high-priority cells from the destination router to 8000 kbps:
atm backward-peak-cell-rate-clp0 8000
To change the peak rate of low-priority cells coming from the destination router to the source router on the SVC, use the atm backward-peak-cell-rate-clp1 map-class configuration command. The no form of this command restores the default.
atm backward-peak-cell-rate-clp1 rate| rate | Maximum rate in kilobits per second (kbps) that this SVC can receive low-priority cells from the destination router. Default is -1. Maximum upper range is 155,000 kbps. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp1 indicates that this command affects only cells with a cell loss priority (CLP) of 1 (low-priority cells).
The following example sets the peak rate for low-priority cells from the destination router to 7000 kbps:
atm backward-peak-cell-rate-clp1 7000
To change the sustainable rate of high-priority cells coming from the destination router to the source router on the SVC, use the atm backward-sustainable-cell-rate-clp0 map-class configuration command. The no form of this command restores the default.
atm backward-sustainable-cell-rate-clp0 rate| rate | Sustainable rate in kilobits per second (kbps) that this SVC can receive high-priority cells from the destination router. Default is -1. Maximum upper range is 155,000 kbps. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp0 indicates that this command affects only cells with a cell loss priority (CLP) of 0 (high-priority cells).
The following example sets the sustainable rate for high-priority cells from the destination router to 800 kbps:
atm backward-sustainable-cell-rate-clp0 800
To change the sustainable rate of low-priority cells coming from the destination router to the source router on the SVC, use the atm backward-sustainable-cell-rate-clp1 map-class configuration command. The no form of this command restores the default value.
atm backward-sustainable-cell-rate-clp1 rate| rate | Sustainable rate in kilobits per second (kbps) that this SVC can receive low-priority cells from the destination router. Default is -1. Maximum upper range is 155,000 kbps. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp1 indicates that this command affects only cells with a cell loss priority (CLP) of 1 (low-priority cells).
The following example sets the sustainable rate for low-priority cells from the destination router to 700 kbps:
atm backward-sustainable-cell-rate-clp1 700
To cause the AIP to generate the transmit clock internally, use the atm clock internal interface configuration command. The no form of this command restores the default value.
atm clock internalThis command has no arguments or keywords.
The AIP uses the transmit clock signal from the remote connection (the line). The switch provides the clocking.
Interface configuration
This command is meaningless on a 4B/5B PLIM.
The following example causes the AIP to generate the transmit clock internally:
atm clock internal
To set the exception-queue length, use the atm exception-queue interface configuration command. The no form of this command restores the default value.
atm exception-queue number| number | Number of entries in the range of 8 to 256. Default is 32 entries. |
32 entries
Interface configuration
The exception-queue is used for reporting ATM events, such as CRC errors.
In the following example, the exception-queue is set to 50 entries:
atm exception-queue 50
To change the maximum number of high-priority cells going from the source router to the destination router at the burst level on the SVC, use the atm forward-max-burst-size-clp0 map-class configuration command. The no form of this command restores the default value.
atm forward-max-burst-size-clp0 cell-count| cell-count | Maximum number of high-priority cells going from the source router at the burst level. Default is -1. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp0 indicates that this command affects only cells with a cell loss priority (CLP) of 0 (high-priority cells).
The following example sets the maximum number of high-priority cells going from the source router at the burst level to 100,000:
atm forward-max-burst-size-clp0 100000
To change the maximum number of low-priority cells going from the source router to the destination router at the burst level on the SVC, use the atm forward-max-burst-size-clp1 map-class configuration command. The no form of this command restores the default value.
atm forward-max-burst-size-clp1 cell-count| cell-count | Maximum number of low-priority cells going from the source router at the burst level. Default is -1. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp1 indicates that this command affects only cells with a cell loss priority (CLP) of 1 (low-priority cells).
The following example sets the maximum number of low-priority cells going from the source router at the burst level to 100,000:
atm forward-max-burst-size-clp1 100000
To change the peak rate of high-priority cells going from the source router to the destination router on the SVC, use the atm forward-peak-cell-rate-clp0 map-class configuration command. The no form of this command restores the default value.
atm forward-peak-cell-rate-clp0 rate| rate | Maximum rate in kilobits per second (kbps) that this SVC can send high-priority cells from the source router. Default is -1. Maximum upper range is 155,000 kbps. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp0 indicates that this command affects only cells with a cell loss priority (CLP) of 0 (high-priority cells).
The following example sets the peak high-priority cell rate from the source router to 1000 Kbps:
atm forward-peak-cell-rate-clp0 1000
To change the peak rate of low-priority cells coming from the source router to the destination router on the SVC, use the atm forward-peak-cell-rate-clp1 map-class configuration command. The no form of this command restores the default value.
atm forward-peak-cell-rate-clp1 rate| rate | Maximum rate in kilobits per second (kbps) that this SVC can send low-priority cells from the source router. Default is -1. Maximum upper range is 155,000 kbps. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp1 indicates that this command affects only cells with a cell loss priority (CLP) of 1 (low-priority cells).
The following example sets the peak low-priority cell rate from the source router to 100,000 kbps:
atm forward-peak-cell-rate-clp1 100000
To change the sustainable rate of high-priority cells coming from the source router to the destination router on the SVC, use the atm forward-sustainable-cell-rate-clp0 map-class configuration command. The no form of this command restores the default value.
atm forward-sustainable-cell-rate-clp0 rate| rate | Sustainable rate in kilobits per second (kbps) that this SVC can send high-priority cells from the source router. Default is -1. Maximum upper range is 155,000 kbps. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp0 indicates that this command affects only cells with a cell loss priority (CLP) of 0 (high-priority cells).
The following example sets the sustainable rate for high-priority cells from the source router to100,000 kbps:
atm forward-sustainable-cell-rate-clp0 100000
To change the sustainable rate of low-priority cells coming from the source router to the destination router on the SVC, use the atm forward-sustainable-cell-rate-clp1 map-class configuration command. The no form of this command restores the default value.
atm forward-sustainable-cell-rate-clp1 rate| rate | Sustainable rate in kilobits per second (kbps) that this SVC can send low-priority cells from the source router. Default is -1. Maximum upper range is 155,000 kbps. |
-1. The router does not request this quality of service (QOS) parameter of the ATM switch, so the switch provides a "best effort service." The switch will drop cells if there is not enough buffer space.
Map-class configuration
The keyword clp1 indicates that this command affects only cells with a cell loss priority (CLP) of 1 (low-priority cells).
The following example sets the sustainable rate for low-priority cells from the source router to100,000 kbps:
atm forward-sustainable-cell-rate-clp1 100000
To set the maximum number of virtual circuits the AIP will support, use the atm maxvc interface configuration command. The no form of this command restores the default value.
atm maxvc number| number | Maximum number of supported virtual circuits. Valid values are 256, 512, 1024, 2048, or 4096. Default is 4096. |
4096 virtual circuits
Interface configuration
This command does not affect the VPI/VCI of each virtual circuit. It limits the number of virtual circuits on which the AIP allows segmentation and reassembly (SAR) to occur.
The following example restricts the AIP to supporting a maximum of 2048 virtual circuits:
atm maxvc 2048
To set the NSAP address for an ATM interface using SVC mode, use the atm nsap-address interface configuration command. The no form of this command removes any configured address for the interface.
atm nsap-address nsap-address| nsap-address | The 40-digit (hexadecimal) NSAP address of this interface (the source address) |
No NSAP address is defined for this interface.
Interface configuration
When you are configuring an SVC, the atm nsap-address command is required, as it defines the source NSAP address. It identifies a particular port on the ATM network and must be unique across the network.
Configuring a new address on the interface will overwrite the previous address. The router considers the address as a string of bytes and will not prefix or suffix the address with any other strings or digits. The complete NSAP address must be specified, because this value will be used in the Calling Party Address Information Element in the SETUP message to establish a virtual circuit.
ATM NSAP addresses have a fixed length of 40 hexadecimal digits. You must configure the complete address in the following format:
xx.xxxx.xx.xxxxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xx
In the following example, the source NSAP address for the interface is AB.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.12 :
atm nsap-address AB.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.12
To create a permanent virtual circuit (PVC) on the AIP interface, use the atm pvc interface configuration command. The no form of this command destroys the specified PVC.
atm pvc vcd vpi vci aal-encap [peak] [average] [burst]If no peak and average rates are specified, the PVC defaults to the highest bandwidth rate-queue available. Peak and average rates are then equal. By default, the VC is configured to run as fast as possible.
Interface configuration
This command creates a PVC and attaches it to the VPI and VCI specified. Both vpi and vci cannot be specified as 0; if one is 0, the other cannot be 0. The aal-encap argument determines the AAL mode and the encapsulation method used. The peak and average arguments determine the rate queue used.
If you are configuring an SVC, this command is required to configure the PVC that handles the SVC call setup and termination. In this case, specify qsaal for the aal-encap argument. See the second example that follows.
The following example creates a PVC with VPI 0 and VCI 6. The PVC uses AAL aal5mux with IP protocol.
atm pvc 1 0 6 aal5mux ip
The following example creates a PVC to be used for ATM signalling for an SVC. It specifies VPI 0 and VCI 5.
atm pvc 1 0 5 qsaal
A dagger (+) indicates that the command is documented in another chapter.
atm maxvc
atm rate-queue
mtu +
To create a rate queue for the AIP, use the atm rate-queue interface configuration command. The no form of this command removes the rate queue.
atm rate-queue queue-number speedNo rate-queue is defined.
Interface configuration
You must create a rate queue before a virtual circuit can be created. You can create multiple rate queues. A warning message appears if all rate queues are deconfigured or if the combined rate-queues exceed the PLIM rate.
In the following example, rate queue 1 is configured for 100 Mbps:
atm rate-queue 1 100
To define the AIP raw-queue size, use the atm rawq-size interface configuration command. The no form of this command restores the default value.
atm rawq-size number| number | Maximum number of cells in the raw queue simultaneously, in the range 8 through 256. Default is 32. |
32 cells
Interface configuration
The raw queue is used for raw ATM cells, which include OAM (F4 and F5) and Interim Local Management Interface (ILMI) cells.
In the following example, a maximum of 48 cells are allowed in the raw queue:
atm rawq-size 48
To set the maximum number of Receive buffers for simultaneous packet reassembly, use the atm rxbuff interface configuration command. The no form of this command restores the default value.
atm rxbuff number| number | Maximum number of packet reassemblies that the AIP can perform simultaneously, in the range 0 through 512. Default is 256. |
256 packet reassemblies
Interface configuration
In the following example, the AIP can perform a maximum of 300 packet reassemblies simultaneously:
atm rxbuff 300
To set the proper mode of operation for the SONET PLIM, use the atm sonet stm-1 interface configuration command. The no form of this command restores the default.
atm sonet stm-1This command has no arguments or keywords.
STS-3C
Interface configuration
Use STM-1 in applications where the ATM switch requires "unassigned cells" for rate adaptation. Use the default (STS-3C) in applications where the ATM switch requires "idle cells" for rate adaptation.
The following example specifies ATM SONET STM-1:
atm sonet stm-1
To set the maximum number of Transmit buffers for simultaneous packet fragmentation, use the atm txbuff interface configuration command. The no form of this command restores the default value.
atm txbuff number| number | Maximum number of packet fragmentations that the AIP can perform simultaneously, in the range 0 through 512. Default is 256. |
256 packet fragmentations
Interface configuration
In the following example, the AIP is configured to perform up to 300 packet fragmentations simultaneously:
atm txbuff 300
To set the maximum number of VCIs to support per VPI, use the atm vc-per-vp interface configuration command. The no form of this command restores the default value.
atm vc-per-vp number| number | Maximum number of VCIs to support per VPI. Valid values are 32, 64, 128, 256, 512, 1024, 2048, or 4096. Default is 1024. |
1024
Interface configuration
This command controls the memory allocation in the AIP to deal with the VCI table. It defines the maximum number of VCIs to support per VPI; it does not bound the VCI numbers.
An invalid VCI causes a warning message to be displayed.
In the following example, the maximum number of VCIs to support per VPI is set to 512:
atm vc-per-vp 512
atm pvc
To set the AIP filter register, use the atm vp-filter interface configuration command. The no form of this command restores the default value.
atm vp-filter hexvalue| hexvalue | Value in hexadecimal format. Default is 0x7B. |
0x7B
Interface configuration
This command configures the hexadecimal value used in the VP filter register in the reassembly operation. When a cell is received, the right half of the filter is exclusively NORed with the incoming VPI. The result is then ORed with the left half of the filter (the mask). If the result is all ones, then reassembly is done using the VCI/MID table (AAL3/4 processing). Otherwise, reassembly is done using the VPI/VCI table.
In other words, this command allows a way to specify which VPI (or range of VPIs) will be used for AAL3/4 processing; all other VPIs map to AAL5 processing. If only AAL5 processing is desired, the VP filter can default or be set to an arbitrary VPI and AAL5 processing will be performed on all VPIs.
In the following example, the VP filter is set to the value 0xFF:
atm vp-filter ff
To define an ATM map statement for an SVC, use the atm-nsap map-list configuration command in conjunction with the map-list global configuration command. The no form of this command removes the address.
protocol protocol-address atm-nsap atm-nsap-address [class class-name] [broadcast]| protocol | One of the following keywords: appletalk, apollo, bridge, clns, decnet, ip, ipx, vines, xns. |
| protocol-address | Destination address that is being mapped to this SVC. |
| atm-nsap-address | Destination ATM NSAP address. Must be exactly 40 hexadecimal digits long and in the correct dotted-decimal format. |
| class | (Optional) Keyword. |
| class-name | (Optional) Name of a table that contains encapsulation-specific parameters. Such a table can be shared between maps that have the same encapsulation. |
| broadcast | (Optional) Indicates this map entry is to be used when the corresponding protocol wants to send broadcast packets to the interface (for example, IGRP updates). |
No map statements are defined.
Map-list configuration
This command is required with the map-list command when you are configuring an SVC.
In the following example, a map list named atmsvc includes one map statement for a destination address being mapped:
map-list atmsvc
ip 131.108.97.17 atm-nsap AB.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.12 class qos broadcast
map-list
To define an ATM map statement for a PVC, use the atm-vc map-list configuration command in conjunction with the map-list global configuration command. The no form of this command removes the address.
protocol protocol-address atm-vc vcd [broadcast]No map statements are defined.
Map-list configuration
When operating in PVC mode, multicast capabilities may not exist in the ATM switch. For this reason, all static maps for a specific protocol should be marked as broadcast for multicasting. When a protocol is sending a packet to its multicast address, all static maps marked as broadcast will get a copy of that packet. This procedure simulates the multicast environment of a LAN.
Some switches may have point-to-multipoint PVCs that do the equivalent process. If one exists, then that PVC may be used as the sole broadcast PVC for all multicast requests.
In the following example, a map list named atm includes two map statements for protocol addresses being mapped:
map-list atm
ip 131.108.168.112 atm-vc 1 broadcast
decnet 10.2 atm-vc 2 broadcast
map-list
To disconnect an SVC, use the atmsig close EXEC command.
atmsig close atmslot/0 vcd| slot | Slot of the SVC to close. |
| vcd | Virtual circuit descriptor of the signaling PVC to close. |
EXEC
Since the AIP does not perform packet-level accounting on a per-VC basis, the interface does not close an idle SVC automatically. You must execute this command if you want to close a particular SVC. Since VCs are numbered per interface, you must specify which ATM interface by its slot number.
The following example closes SVC 2 on ATM interface 4/0:
atmsig close atm4/0 2
To place the AIP into loopback mode, use the loopback plim interface configuration command. The no form of this command removes the loopback.
loopback plimThis command has no arguments or keywords.
Packets go from the AIP to the ATM network.
Interface configuration
This command is useful for testing because it loops all packets from the AIP back to the AIP as well as directing the packets to the network.
The following example places the AIP into loopback mode:
loopback plim
To define quality of service (QOS) parameters that are associated with a static map for an SVC, use the map-class global configuration command. The no form of this command deletes this class.
map-class encapsulation class-name| encapsulation | Encapsulation type. One of the following: atm, dialer, frame-relay, smds, or x25. |
| class-name | User-assigned name of the QOS parameters table. |
No QOS parameters are defined.
Global configuration
If the map class identified by class-name does not already exist, the router creates a new one. In either case, this command specifies the map class to which subsequent encapsulation-specific commands apply. Configuration of a map class is allowed only if the subsystem corresponding to the encapsulation is linked.
It is up to the media-specific routing that uses a static map to ensure that the referenced class exists if parameters are required.
The following example establishes QOS parameters for map-class atmclass1 and map-class atmclass2:
map-list atmlist
ip 131.108.170.21 atm-vc 12
ip 131.108.180.121 atm-nsap 12.3456.7890.abcd.0000.00 broadcast
ip 131.108.190.221 atm-vc 88 class atmclass1
decnet 10.23 atm-vc 33 class atmclass2 broadcast
map-class atm atmclass1
atm forward-peak-cell-rate-clp0 8000
atm backward-peak-cell-rate-clp0 8000
map-class atm atmclass2
atm forward-peak-cell-rate-clp1 7000
atm backward-peak-cell-rate-clp1 7000
atm backward-sustainable-cell-rate-clp0 800
interface atm 2/0
map-group atmlist
atm backward-peak-cell-rate-clp0
atm backward-peak-cell-rate-clp1
atm backward-max-burst-size-clp0
atm backward-max-burst-size-clp1
atm backward-sustainable-cell-rate-clp0
atm backward-sustainable-cell-rate-clp1
atm forward-peak-cell-rate-clp0
atm forward-peak-cell-rate-clp1
atm forward-max-burst-size-clp0
atm forward-max-burst-size-clp1
atm forward-sustainable-cell-rate-clp0
atm forward-sustainable-cell-rate-clp1
To associate an ATM map list to an interface or subinterface for either a PVC or SVC, use the map-group interface configuration command. The no form of this command removes the reference to the map list.
map-group name| name | Name of the map list identified by the map-list command |
No ATM map lists are associated.
Interface configuration
More than one map-group can be configured for an interface.
In the following example, the map list named atm is associated with the ATM interface:
interface atm 2/0
map-group atm
map-list
To define an ATM map statement for either a PVC or SVC, use the map-list global configuration command. The no form of this command deletes this list and all associated map statements.
map-list name| name | Name of the map list |
No map statements are defined.
Global configuration
ATM currently does not provide broadcasting or multicasting capabilities. To allow the router to propagate routing updates and ARP requests, a static map that maps the protocol address and the ATM address of the next-hop ATM station must be configured. The router supports a mapping scheme that identifies the ATM address of remote hosts/routers. This address can be specified either as a virtual circuit descriptor (vcd) for a PVC or an NSAP address for an SVC.
The map-list command specifies the map list to which the subsequent map-list configuration commands apply. These map-list configuration commands identify destination addresses. One map list can contain multiple map entries. A map-list can be referenced by more than one interface.
In the following example for a PVC, a map list named atm includes two map statements for protocol addresses being mapped:
Router(config)# map-list atm
Router(config-map-list)# ip 131.108.168.112 atm-vc 1 broadcast
Router(config-map-list)# decnet 10.2 atm-vc 2 broadcast
In the following example for an SVC, a map list named atm includes two map statements for protocol addresses being mapped:
map-list atm
ip 131.108.97.165 atm-nsap BC.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.13
ip 131.108.97.166 atm-nsap BC.CDEF.01.234567.890A.BCDE.F012.3456.7890.1234.12
atm-nsap
atm-vc
map-group
To display ATM-specific information about an interface, use the show atm interface atm privileged EXEC command.
show atm interface atm slot/0| slot | Slot number of the AIP |
EXEC
The following is sample output from the show atm interface atm command to display statistics on a given interface, in this case, slot 4, port 0:
Router# show atm interface atm 4/0
ATM interface ATM4/0:
AAL enabled: AAL5 , Maximum VCs: 1024, Current VCs: 6
Tx buffers 256, Rx buffers 256, Exception Queue: 32, Raw Queue: 32
VP Filter: 0x7B, VCIs per VPI: 1024
PLIM Type:4B5B - 100Mbps, No Framing, TX clocking: LINE
4897 input, 2900 output, 0 IN fast, 0 OUT fast
Rate-Queue 1 set to 100Mbps, reg=0x4EA
Config. is ACTIVE
Table 7-1 describes the fields shown in the display.
atm pvc
To display the list of all configured ATM static maps to remote hosts on an ATM network, use the show atm map privileged EXEC command.
show atm mapThis command has no arguments or keywords.
Privileged EXEC
The following is sample output from the show atm map command:
Router# show atm map
Map list atm :
vines 3004B310:0001 maps to VC 4, broadcast
ip 131.108.168.110 maps to VC 1, broadcast
clns 47.0004.0001.0000.0c00.6e26.00 maps to VC 6, broadcast
appletalk 10.1 maps to VC 7, broadcast
decnet 10.1 maps to VC 2, broadcast
Table 7-2 describes the fields shown in the display.
| Field | Description |
|---|---|
| Map list | Name of map list. |
| protocol address maps to VC x | Name of protocol, the protocol address, and the VCD that the address is mapped to. |
| broadcast | Indicates pseudo broadcasting. |
atm pvc
map-list
To display current, global ATM traffic information to and from all ATM networks connected to the router, use the show atm traffic privileged EXEC command.
show atm trafficThis command has no arguments or keywords.
Privileged EXEC
The following is sample output from the show atm traffic command:
Router# show atm traffic
4915 Input packets
0 Output packets
2913 Broadcast packets
0 Packets for non-existent VC
Table 7-3 describes the fields shown in the display.
| Field | Description |
|---|---|
| Input packets | Total packets input. |
| Output packets | Total packets output (non-broadcast). |
| Broadcast packets | Total broadcast packets output. |
| Packets for non-existent VC | Packets sent to virtual circuits not configured. |
atm pvc
To display all active ATM virtual circuits (PVCs and SVCs) and traffic information, use the show atm vc privileged EXEC command.
show atm vc [vcd]| vcd | (Optional) Specifies which VC to display information about. |
Privileged EXEC
If no vcd is specified, the command displays information for all PVCs and SVCs. The output is in summary form (one line per VC).
The following is sample output from the show atm vc command when no vcd is specified, displaying statistics for all VCs:
Router# show atm vc
Intfc. VCD VPI VCI Input Output Infast Outfast Broadcast AAL/Encaps
ATM4/0 1 1 1 305 0 0 0 309 AAL5-SNAP
ATM4/0 2 2 2 951 0 0 0 951 AAL5-SNAP
ATM4/0 3 3 3 0 0 0 0 0 AAL5-SNAP
ATM4/0 4 4 4 162 0 0 0 0 AAL5-MUX
ATM4/0 6 6 6 2722 0 0 0 876 AAL5-SNAP
ATM4/0 7 7 7 733 0 0 0 753 AAL5-SNAP
The following is sample output from the show atm vc command when a vcd is specified, displaying statistics for that VC only:
Router# show atm vc 4
ATM4/0: VCD: 4, VPI: 4, VCI: 4, etype:0xBAD, AAL5 - MUX, Flags: 0x34
PeakRate: 0, Average Rate: 0, Burst: 0 *32cells, Vcmode: 0xE200
InPkts: 164, OutPkts: 0, InFast: 0, OutFast: 0, Broadcasts: 0
Table 7-4 describes the fields shown in the display.
atm pvc
To show SSCOP details for all ATM interfaces, use the show sscop privileged EXEC command.
show sscopThis command has no arguments or keywords.
Privileged EXEC
The following is sample output from the show sscop command:
Router# show sscop
SSCOP details for interface ATM4/0
Current State = Data Transfer Ready
Send Sequence Number: Current = 2, Maximum = 9
Send Sequence Number Acked = 3
Rcv Sequence Number: Lower Edge = 2, Upper Edge = 2, Max = 9
Poll Sequence Number = 1876, Poll Ack Sequence Number = 2
Vt(Pd) = 0
Connection Control: timer = 1000
Timer currently Inactive
Keep Alive Timer = 30000
Current Retry Count = 0, Maximum Retry Count = 10
Statistics -
Pdu's Sent = 0, Pdu's Received = 0, Pdu's Ignored = 0
Begin = 0/1, Begin Ack = 1/0, Begin Reject = 0/0
End = 0/0, End Ack = 0/0
Resync = 0/0, Resync Ack = 0/0
Sequenced Data = 2/0, Sequenced Poll Data = 0/0
Poll = 1591/1876, Stat = 0/1591, Unsolicited Stat = 0/0
Unassured Data = 0/0, Mgmt Data = 0/0, Unknown Pdu's = 0
Table 7-5 describes the fields shown in the display. Interpreting this output requires a good understanding of the SSCOP; it is usually displayed by our technicians to help diagnose network problems.
| Field | Description |
|---|---|
| SSCOP details for interface | Interface slot and port. |
| Current State | SSCOP state for the interface. |
| Send Sequence Number | Current and maximum send sequence number. |
| Send Sequence Number Acked | Sequence number of packets already acknowledged. |
| Rcv Sequence Number | Sequence number of packets received. |
| Poll Sequence Number | Current poll sequence number. |
| Poll Ack Sequence Number | Poll sequence number already acknowledged. |
| Vt(Pd) | Number of Sd frames sent which triggers a sending of a Poll frame. |
| Connection Control | Timer used for establishing and terminating SSCOP. |
| Keep Alive Timer | Timer used to send keepalives on an idle link. |
| Current Retry Count | Current count of the retry counter. |
| Maximum Retry Count | Maximum value the retry counter can take. |
| Pdu's Sent | Total number of SSCOP frames sent. |
| Pdu's Received | Total number of SSCOP frames received. |
| Pdu's Ignored | Number of invalid SSCOP frames ignored. |
| Begin | Number of Begin frames sent/received. |
| Begin Ack | Number of Begin Ack frames sent/received. |
| Begin Reject | Number of Begin Reject frames sent/received. |
| End | Number of End frames sent/received. |
| End Ack | Number of End Ack frames sent/received. |
| Resync | Number of Resync frames sent/received. |
| Resync Ack | Number of Resync Ack frames sent/received. |
| Sequenced Data | Number of Sequenced Data frames sent/received. |
| Sequenced Poll Data | Number of Sequenced Poll Data frames sent/received. |
| Poll | Number of Poll frames sent/received. |
| Stat | Number of Stat frames sent/received. |
| Unsolicited Stat | Number of Unsolicited Stat frames sent/received. |
| Unassured Data | Number of Unassured Data frames sent/received. |
| Mgmt Data | Number of Mgmt Data frames sent/received. |
| Unknown Pdu's | Number of Unknown Pdu's frames sent/received. |
To change the connection control timer, use the sscop cc-timer interface configuration command. The no form of this command restores the default value.
sscop cc-timer seconds| seconds | Number of seconds between Begin messages. Default is 10 seconds. |
10 seconds
Interface configuration
The connection control timer determines the time between transmission of BGN, END, or RS PDUs as long as an acknowledgment has not been received.
In the following example, the connection control timer is set to 15 seconds:
sscop cc-timer 15
sscop max-cc
To change the keepalive timer, use the sscop keepalive-timer interface configuration command. The no form of this command restores the default value.
sscop keepalive-timer seconds| seconds | Number of seconds the router waits between transmission of POLL PDUs when no SD or SDP PDUs are queued for transmission or are outstanding pending acknowledgments. |
30 seconds
Interface configuration
In the following example, the keepalive timer is set to 15 seconds:
sscop keepalive-timer 15
To change the retry count of connection control, use the sscop max-cc interface configuration command. The no form of this command restores the default value.
sscop max-cc retries| retries | Number of times that SSCOP will retry to transmit BGN, END, or RS PDUs as long as an acknowledgment has not been received. Valid range is 1 to 6000. |
10 retries
Interface configuration
In the following example, the retry count of the connection control is set to 20:
sscop max-cc 20
sscop cc-timer
To change the poll timer, use the sscop poll-timer interface configuration command. The no form of this command restores the default value.
sscop poll-timer seconds| seconds | Number of seconds the router waits between transmission of POLL PDUs |
10 seconds
Interface configuration
The poll timer controls the maximum time between transmission of POLL PDUs when SD or SDP PDUs are queued for transmission or are outstanding pending acknowledgments.
In the following example, the poll timer is set to 15 seconds:
sscop poll-timer 15
To change the receiver window, use the sscop rcv-window interface configuration command. The no form of this command restores the default value.
sscop rcv-window packets| packets | Number of packets the interface can receive before it must send an acknowledgment to the ATM switch. Valid range is 1 to 6000. |
7 packets
Interface configuration
In the following example, the receiver's window is set to 10 packets:
sscop rcv-window 10
To change the transmitter window, use the sscop send-window interface configuration command. The no form of this command restores the default value.
sscop send-window packets| packets | Number of packets the interface can send before it must receive an acknowledgment from the ATM switch. Valid range is 1 to 6000. |
7 packets
Interface configuration
In the following example, the transmitter's window is set to 10 packets:
sscop send-window 10
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