To aid in system management, the Catalyst 3900 allows you to obtain a variety of status, statistic, and diagnostic information. This chapter provides information on the following:
Note The Catalyst 3900 allows LAN Network Manager LLC frames to flow through the switch. Therefore, communication between LAN Network Manager and existing source-route bridges and controlled access units is maintained. However, some error reporting functions and ring map functions might be lost for the rings attached to the Catalyst 3900.
Power Supply Status—Indicates the current status of the power supply. Possible values are the following:
Internal only—Internal power supply is acting as the main power source. The switch is not capable of being connected to a redundant power supply (RPS) unit.
Internal w/no backup—Internal power supply is acting at the main power source and either the switch is not connected to an RPS unit or the RPS unit is not operational.
Internal w/backup (will reset)—Internal power supply is acting as the main power source and the switch is connected to an RPS unit that is ready to supply backup power in the event that the main source fails. If the power supply is changed from the internal supply to the RPS (due to a failure in the internal supply), the switch will reset.
External w/no backup—RPS unit is acting as the main power source and there is no backup power supply available. This is either because the switch is connected to only one of the RPS DC supplies and the internal power supply has failed or because the switch is connected to two of the RPS DC supplies and one of them has failed.
External w/backup (no reset)—RPS unit is acting as the main power source and is ready to supply backup power. This means that the switch is connected to two of the RPS DC supplies.
DRiP Advertisements Transmitted—Number of DRiP advertisements transmitted on the local ISL ports. This field is displayed only if there is an ISL module installed in the Catalyst 3900 or in a switch in the stack to which the Catalyst 3900 belongs.
DRiP Advertisements Received—Number of DRiP advertisements received on the local ISL ports. This field is displayed only if there is an ISL module installed in the Catalyst 3900 or in a switch in the stack to which the Catalyst 3900 belongs.
The following information is displayed on this panel:
Port—Port number. For an ATM port, there is an entry for each virtual ATM port, or LEC, defined.
TrCRF—Name of the TrCRF to which this port belongs. The panel shows only the first 16 characters of the name. For an ATM port, this is the name of the TrCRF to which the LEC belongs. For an ISL port, this field displays trunking.
TrBRF—Name of the TrBRF to which this port belongs. The panel shows only the first 16 characters of the name. For an ISL port, this field displays trunking.
Enabled—Indicates whether the port is enabled. Possible values are Yes and No. For ports associated with an LEC, the possible values are Disabled, Going Up, Up, Going Admin Down, Admin Down, Failing, Waiting for Module Up, and Forwarding.
Ins—Indicates whether the port is inserted into the ring. Possible values are Yes and No.
HDX port—Half-duplex mode in which only a dedicated connection to a station is supported. The Tx/Rx pinouts are the same as a concentrator's.
HDX station—Half-duplex mode in which the port operates like a station. The connection may be dedicated or shared. The Tx/Rx pinouts are the same as an adapter's.
FDX port—Full-duplex mode in which only a dedicated connection to a station is supported. The Tx/Rx pinouts are the same as a concentrator's.
FDX station—Full-duplex mode in which the port operates like a station. The connection may be dedicated or shared. The Tx/Rx pinouts are the same as an adapter's pinouts.
RI—Ring in mode.
RO—Ring out mode.
RI/RO—Ring-in/ring-out mode. Only displayed for ports 19 and 20.
The following options are displayed on this panel:
General Statistics—Select this option to view general port statistics. For more information, refer to the "Viewing General Port Statistics" section.
Statistics—Select this option to view 802.5 port statistics. For more information, refer to the "Viewing 802.5 Port Statistics" section.
802.5 State Information—Select this option to view 802.5 state information for each port. For more information, refer to the "Viewing 802.5 Port State Information" section.
Frames Processed—Number of frames received on this port and delivered to the Catalyst 3900 system software for processing.
Frames Unknown—Number of frames processed by the Catalyst 3900 system software that contained either an unknown source address or unknown destination address.
Recoveries—Number of claim token MAC frames received or transmitted after the port has received a ring purge MAC frame. This counter signifies the number of times the ring has been purged and had recovered back into a normal operating state.
Removes—Number of times the port has received a remove ring station MAC frame request. When this frame is received the port will enter the closed state.
Singles—Number of times the port has sensed that it is the only station on the ring. This occurs if the port is the first one up on a ring, or if there is a hardware problem.
Ring Open Status—Indicates whether the station successfully entered the ring in its most recent attempt, and, if not, the reason for failure. Possible values are Open, No Open, Lobe Failed, Signal Loss, Insertion Timeout, Ring Failed, Beaconing, Duplicate MAC Address, Request Failed, and Remove Received.
The following information is displayed on this panel:
Authorized Function Classes—Functional classes that a node is enabled to transmit. This value is set in the Enabled Function Class subvector (x'06') of the Change Parameters MAC frame. Possible values are 0x0000 through 0xFFFF. Each bit that is enabled corresponds to a function class that is enabled.
Physical Drop Number—Physical location of the sending ring station. This value is set in the Assign Physical Location subvector (x'04') of the Change Parameters MAC frame or the Initialize Station MAC frame. Possible values are 0x00000000 through 0xFFFFFFFF.
Station Individual Address Count—Number of individual addresses supported by the MAC and used in the Individual Address Count subvector (x'21'). This field will always display the value 1.
CPort Phantom Drive Mask—Value of the C-Port policy variable Port Phantom Vector (Phantom Drive Mask [PPV(PD_MASK)]. This variable indicates the phantom drive and wire fault detection methods supported by the C-Port. Possible values are RI-RO and Not RI-RO.
Common Access Protocol Mask—Access protocols can be supported by the PMAC. It displays the value of the PPV(AP_MASK). Possible values for this field are TKP, TXI, and TKP+TXI.
Common Policy Flags—Station policy flags as a hexadecimal value of the form 0xnnnn.
To access statistics about the virtual ATM ports, select Port Statistics on the Statistics Menu panel and specify the port identifier of the ATM port. The Port x ATM Statistics panel (Figure 8-11) is displayed.
The following options are displayed on this panel:
General ATM Statistics—Select this option to display statistical counters for the inbound and outbound traffic. Refer to the "Viewing General ATM Statistics" section for more information.
LEC Statistics—Select this option to access statistical information about an LEC. Refer to the "Viewing LEC Statistics" section for more information.
VCC Statistics—Select this option to display statistical counters for the VCC. Refer to the "Viewing VCC Statistics" section for more information.
To view general ATM statistical information, select General ATM Statistics on the Port x ATM Statistics panel. The Port x General ATM Statistics panel (Figure 8-12) is displayed.
To view statistical information about the LEC, select LEC Statistics on the Port x ATM Statistics panel. The Port x LEC Statistics Menu panel (Figure 8-13) is displayed.
The following options are displayed on this panel:
Frame Forwarding Statistics—Select this option to display forwarding statistics about received and transmitted frames. Refer to the "Viewing Frame Forwarding Statistics" section for more information.
LANE Status—Select this option to display the status of the elements of this emulated LAN. Refer to the "Viewing LANE Status" section for more information.
Server VCC Table—Select this option to display the server VCC table. Refer to the "Viewing the Server VCC Table" section for more information.
LE-ARP Table—Select this option to display the LE-ARP table. Refer to the "Viewing the LE-ARP Table" section for more information.
Route Descriptor Table—Select this option to display the LE-ARP route descriptor table. Refer to the "Viewing the LE-ARP Route Descriptor Table" section for more information.
LEC VCC Statistics—Select this option to display VCC statistics for this LEC. Refer to the "Viewing the LEC VCC Statistics" section for more information.
To view forwarding statistics about frames received and transmitted on this port, select Frame Forwarding Statistics on the Port x LEC Statistics Menu panel. The Frame Forwarding Statistics panel (Figure 8-14) is displayed.
To view the status of the elements of this LEC, select LANE Status on the Port x LEC Statistics Menu panel. The Port x LANE Status panel (Figure 8-15) is displayed.
The following information is displayed on this panel:
LEC State—Current state of the emulated LAN. Possible values are Disabled, Going Up, Up, Going Admin Down, Admin Down, Failing, Waiting for Module Up, and Forwarding.
ELAN Name—Name of the emulated LAN that the LEC joins to provide connection to the ATM network. The name is automatically provided when the LEC connects with the emulated LAN.
ELAN Type—Type of LAN to which the LEC belongs. Possible values are unspecified, .3 (for 802.3), and .5 (for 802.5).
Primary ATM Address—Primary ATM address of the LEC.
LECS ATM Address—ATM Address of the LECS that is assigned to the LEC.
LES ATM Address—ATM address of the LES that is assigned to the LEC. This address is determined when the LEC starts.
LEC Status
LEC ID—Virtual ATM Port LEC ID.
Protocol—LANE protocol .
Version—Version number of LANE protocol.
IF State—Status of the interface. Possible values are Initial State, LECS Connect, Configure, Join, Initial Registration, Bus Connect, Operational.
Topology Change—Indicates whether a topology change has occurred. Possible values are TRUE and FALSE.
Configuration Source—Source from which the LEC obtained its configuration. Possible values are Address via ILMI, Used Well Known Address, Used LEC PVC, and Did Not use LECS.
Actual Max Frame Size—Actual maximum frame size used. The maximum frame size is the MTU plus the header. Possible values are 1516, 4544, 9234, and 18190.
Last Failure
Response Code—Response code of the last failure. Possible values are None, Time-Out, Undefined error, Version Not Supported, Invalid Request Parameters, Duplicate LAN Destination, Duplicate ATM Address, Insufficient Resources, Access Denied, Invalid Requestor ID, Invalid LAN Destination, Invalid ATM Address, No Configuration, LE Configure Error, and Insufficient Information.
IF State—State of the interface at the last failure. Possible values are Initial State, LECS Connect, Configure, Join, Initial Registration, Bus Connect, and Operational.
To view the server VCC table, select Server VCC Table on the Port x LEC Statistics Menu panel. The Port x Server VCC Table panel (Figure 8-16) is displayed.
To view the LE-ARP route descriptor table, select Route Descriptor Table on the Port x LEC Statistics Menu panel. The Port x Route Descriptor Table panel (Figure 8-18) is displayed.
The following information is displayed on this panel:
Bridge—Number of the bridge through which the ATM address is accessed. Possible values are 1 through 15.
Segment—Ring number of the segment through which the ATM address is accessed. Possible values are 0 through 4095.
ATM Address—ATM address.
Entry Type—Indicates how the entry was learned. Possible values are Learned Via Control, Learned Via Data, Static Volatile, Static Non-volatile, and Other.
To view VCC statistics for this LEC, select LEC VCC Statistics on the Port x LEC Statistics Menu panel. The Port x LEC VCC Statistics panel (Figure 8-19) is displayed.
To view statistical information about the VCCs associated with this port, select VCC Statistics on the Port x ATM Statistics panel. The Port x ATM VCC Statistics panel (Figure 8-20) is displayed.
The following information is displayed on this panel:
VPI—VPI associated with this VCC. Possible values are 0 through 3.
VCI—VCI associated with this VCC. Possible values are 0 through 4095.
Usage—Indicates how this VCC is used. Possible values are SSCOP, ILMI, OAM, LANE Config, LANE Control Direct, LANE Control Distribute, LANE Multicast Send, LANE Multicast Forward, and LANE Data Direct.
Instance—Associated Virtual ATM Port number, which is also to TrCRF number.
MAC Address—MAC address associated with this VCC.
ATM Address—ATM address associated with this VCC.
Creation Method—Indicates how the VCC was created. Possible values are System, PVC, Incoming Point-Point SVC, Outgoing Point-Point SVC, Incoming Point-Multipoint SVC, Outgoing Point-Multipoint SVC.
Transmit Traffic Descriptor
Type—Traffic type. Possible values are atmfNoClpNoScr, atmfNoClpScr, atmfClpNo-TaggingScr, atmfClpTaggingScr, and BestEffort.
QOS—Quality of service. Possible values are Class 1, Class 2, Class 3, Class 4, and None.
Frame Discard—Whether to allow the switch to discard all complete AAL5 frames if any single cells are lost from an AAL5 frame. Possible values are Yes and No.
Service Category—Service category of the traffic. Possible values are other, cbr, rtVbr, nrtVbr, abr, and ubr.
AAL5 Statistics
CRC Errors—Number of frames with CRC errors.
SAR Timeouts—Number of times the segment and reassembly unit timed out.
Oversized SDUs—Number of SSCOP SAAL service data units that exceeded the maximum specified size.
Frames Transmitted—Number of frames transmitted.
Bytes Transmitted—Number of bytes transmitted.
Frames Received—Number of frames received.
Bytes Received—Number of bytes received.
Last Total Reset—Time (in hours, minutes, and seconds) since the port was last reset.
To access statistics about the ISL ports, select Port Statistics on the Statistics Menu panel and specify the port identifier of the ISL port. The Port x ISL Statistics panel (Figure 8-21) is displayed.
The following options are displayed on this panel:
General Statistics—Select this option to display statistical counters pertaining to the traffic processed by the ISL port. Refer to the "Viewing General ATM Statistics" section for more information.
Error Statistics—Select this option to access statistical information about errors detected on the ISL port. Refer to the "Viewing LEC Statistics" section for more information.
VLAN Statistics—Select this option to display statistical counters pertaining to the traffic processed by the VLANs to which the ISL port belongs. Refer to the "Viewing VLAN Statistics" section for more information.
To view general statistical information about the traffic on the ISL port, select General Statistics on the Port x ISL Statistics panel. The Port x General Statistics panel (Figure 8-22) is displayed. As the Token Ring ISL module encapsulates Token Ring frames in Ethernet frames, the frame counters on this panel pertain to the Ethernet frames transmitted and received by the ISL module.
The information on the statistics panels is refreshed approximately every 5 seconds. To reset the information displayed on any of the statistics panels, select Reset.
Frames Processed—Number of encapsulated Token Ring frames received on this port and delivered to the Catalyst 3900 system software for processing.
Frames Unknown—Number of encapsulated Token Ring frames processed by the Catalyst 3900 system software that contained either an unknown source address or unknown destination address.
To view statistical information about errors detected on the ISL port, select Error Statistics on the Port x ISL Statistics panel. The Port x Error Statistics panel (Figure 8-23) is displayed. The information on the statistics panels is refreshed approximately every 5 seconds. To reset the information displayed on any of the statistics panels, select Reset.
The following information is displayed on this panel:
Alignment Errors—Number of frames received that arrived with a non-integral number of octets and that failed the cyclic redundancy check (CRC).
FCS Errors—Number of frames received with frame check sequence (FCS) errors.
Single Collision Frames—Number of frames that were successfully transmitted after a single collision.
Multiple Collision Frames—Number of frames that were successfully transmitted after more than one collision.
Deferred Transmissions—Number of frames that were deferred during transmission due to other traffic on the segment. This number does not include frames that were deferred because of a collision.
Late Collisions—Number of times a collision was detected after more than 512 bytes of the frame had been transmitted.
Excessive Collisions—Number of times a transmission failed because the number of permitted collisions per transmission has been exceeded.
Oversize Frames—Number of frames received that exceed the maximum frame length limit. Although ISL allows frames up to 24000 bytes, the Catalyst 3900 currently has a maximum frame length limit of 17800 bytes.
Undersize Frames—Number of frames received that contained a valid FCS, but that were less than the minimum 64 bytes.
Invalid ISL VLAN—Number of frames received that contained a source VLAN ID that was unknown (based on the current configuration of the switch).
Excess Deferred—Number of times the ISL link was constantly busy for longer than 466944 bit times.
Long Event—Number of times activity on the ISL receive channel exceeded 233472 bit times.
To view statistical information about traffic processed on each VLAN by the ISL port, select VLAN Statistics on the Port x ISL Statistics panel. The Port x VLAN Statistics panel (Figure 8-24) is displayed. The information on the statistics panels is refreshed approximately every 5 seconds. To reset the information displayed on any of the statistics panels, select Reset.
The following options are displayed on this panel:
VLAN ID—Numeric identifier of the VLAN.
Ring # Mismatch—Number of frames received by the ISL module from the AXIS bus in which the expected ring number was not found in the routing information field (RIF).
Forwarding Frames—Number of frames on this VLAN that were forwarded from the ISL port to the AXIS bus.
Unknown Address—Number of frames received that contained a destination address that was unknown to the switch.
ARE Count—Number of ARE frame processed by the port on this VLAN.
STE Count—Number of STE frames processed by the port on this VLAN.
The following options are displayed on this panel:
Master Address Table—Select this option to view the contents of the master address table. For more information, refer to the "Viewing the Master Address Table" section.
Master Route Descriptor Table—Select this option to view the contents of the master route descriptor table. For more information, refer to the "Viewing the Master Route Descriptor Table" section.
VLAN Address Table—Select this option to view the address tables for each VLAN. For more information, refer to the "Viewing the Address Table for Each VLAN" section.
VLAN Route Descriptor Table—Select this option to view the route descriptor tables for each VLAN. For more information, refer to the "Viewing Route Descriptor Table for Each VLAN" section.
The local segment number is displayed in hexadecimal and is the same for all ports within a single domain. Possible ring numbers are 01 through FFF. Possible bridge numbers are 00 through 0F.
Type—Type of route descriptor. Possible values are:
Known-port_type Port x for a known source-route descriptor. Possible values of port_type are TR and STK.
Unknown if the source route location is unknown.
Ports—Ports of the switch or a feature card whose address tables include this route descriptor.
The local segment number is displayed in hexadecimal and is the same for all ports within a single domain. Possible ring numbers are 01 through FFF. Possible bridge numbers are 00 through 0F.
Type—Type of route descriptor. Possible values are:
Known-port_type Port x for a known source-route descriptor. Possible values of port_type are TR and STK.
Unknown if the source route location is unknown.
Ports—Ports of the switch or a feature card whose address tables include this route descriptor.
Max Message Age—Time at which the configuration message used by the spanning-tree algorithm should be discarded. This time is advertised by the root and used by all devices and switches in the active topology of the spanning-tree network.
Forward Delay—Time the root waits between transitions from listening to learning and from learning to forwarding. This time is advertised by the root and used by all devices and switches in the active topology of the spanning-tree network.
CRF—VLAN ID of a TrCRF belonging to this TrBRF.
PId—Port ID that is used to determine the role of the logical port in the spanning tree. The port ID is expressed in the form port priority.port number.
PCst—Cost associated with each logical port. Lower numbers are generally assigned to ports attached to faster media (such as FDX or TokenChannel), and higher numbers are generally assigned to ports attached to slower media (such as 2400-baud modem links).
PSts—Current status of this logical port within the spanning tree. Possible values are:
DSB (disabled)
BLK (blocked)
LSN (listening)
LRN (learning)
FWD (forwarding)
The rules that define the state of the logical port are as follows:
A port on a network segment that contains no other switch or bridge is always forwarding.
If two ports of the Catalyst 3900 are connected to the same network segment and there is no other bridge or switch, the port with the lower ID is forwarding and the other is blocked.
When the switch is booted, all ports are blocked initially, and then some of them change to a different state: listening, learning, and forwarding, in that order. To see the change in states you must repeatedly exit from this menu, and then select it again. All ports that are going to change states from blocking to forwarding will have done so after two to three times the value of:
Switch Maximum Message Age + (2 x Switch Forward Delay)
DCst—Cost for a packet to travel from this port to the root in the current spanning-tree configuration. The slower the media, the higher the cost.
Dsg SwId/BrId—Priority and MAC address of the device through which this port has determined it must communicate with the root of the spanning tree.
DsgPId—Port on the designated bridge through which this Catalyst 3900 will communicate with the root of the spanning tree. This information is useful if the Catalyst 3900 is the designated bridge on one or more network segments.
#Chgs—Number of topology changes, that is, the number of times the port has entered the forwarding state plus the number of times the port has made the transition from forwarding to blocking. The counter is reset when the switch is reset or the spanning tree is turned on.
Last Chg—Time since the port last entered the forwarding state or made the transition from forwarding to blocking.
The following information is displayed on this panel:
Bridge ID—Priority and MAC address of this bridge.
Root ID—Priority and MAC address of the root bridge.
Root Port—Number of the port on this Catalyst 3900 that is closest to the root. This Catalyst 3900 communicates with the root through this port. If this Catalyst 3900 has been accepted as the root of the spanning-tree network, this field displays "This Bridge".
Hello Time—Time (in seconds) that the root waits between sending configuration messages. This time is advertised by the root and used by all devices and switches in the active topology of the spanning-tree network.
Max Message Age—Time at which the configuration message used by the spanning-tree algorithm should be discarded. This time is advertised by the root and used by all devices and switches in the active topology of the spanning-tree network.
Forward Delay—Time the root waits between transitions from listening to learning and from learning to forwarding. This time is advertised by the root and used by all devices and switches in the active topology of the spanning-tree network.
Port—Port number.
PId—Port ID that is used to determine the role of the port in the spanning tree. The port ID is expressed in the form port priority.port number.
PCst—Cost associated with each port. Lower numbers are generally assigned to ports attached to faster media (such as FDX or TokenChannel), and higher numbers are generally assigned to ports attached to slower media (such as 2400-baud modem links).
PSts—Current status of this port within the spanning tree. Possible values are:
DSB (disabled)
BLK (blocked)
LSN (listening)
LRN (learning)
FWD (forwarding)
The rules that define the state of the port are as follows:
A port on a network segment that contains no other switch or bridge is always forwarding.
If two ports of the Catalyst 3900 are connected to the same network segment and there is no other bridge or switch, the port with the lower ID is forwarding and the other is blocked.
When the switch is booted, all ports are blocked initially, and then some of them change to a different state: listening, learning, and forwarding, in that order. To see the change in states you must repeatedly exit from this menu, and then select it again. All ports that are going to change states from blocking to forwarding will have done so after two to three times the value of:
Switch Maximum Message Age + (2 x Switch Forward Delay)
DCst—Cost for a packet to travel from this port to the root in the current spanning-tree configuration. The slower the media, the higher the cost.
Dsg SwId/BrId—Priority and MAC address of the device through which this port has determined it must communicate with the root of the spanning tree.
DsgPId—Port on the designated bridge through which this Catalyst 3900 will communicate with the root of the spanning tree. This information is useful if the Catalyst 3900 is the designated bridge on one or more network segments.
#Chgs—Number of topology changes, that is, the number of times the port has entered the forwarding state plus the number of times the port has made the transition from forwarding to blocking. The counter is reset when the switch is reset or the spanning tree is turned on.
Last Chg—Time since the port last entered the forwarding state or made the transition from forwarding to blocking.
The Catalyst 3900 provides statistical information for both TrCRFs and TrBRFs. To access statistics for VLANs, select VLAN Statistics on the Statistics Menu.
Summary Advertisements—Contains the management domain name, the configuration revision number, the update timestamp and identity, the authentication checksum, and the number of Subset Advertisement messages which follow it.
Subset Advertisements—Contains all information for one or more (but always an integral number of) VLANs, and indicates its own sequence number within those which follow the Summary Advertisement.
Advertisement Requests—Requests information about VLANs.
If the switch is operating in Server mode, an advertisement is sent across the trunk port when the following events occur:
Immediately upon a change in the configuration of VLAN information.
When no other Summary Advertisement with the current configuration revision number has been received within the timeout period.
Each advertisement consists of one Summary Advertisement immediately followed by zero or more Subset Advertisements. The number of Subset Advertisement messages that follow a Summary Advertisement depends on the reason for sending the advertisement.
If the advertisement is sent because neither this device nor any other device has recently sent an advertisement, then the Summary Advertisement is followed by zero Subset Advertisement messages.
If the advertisement is sent because a configuration change has been made, then the Summary Advertisement is followed by the minimum number of Subset Advertisement messages required to contain all information on all VLANs and ordered in ascending order of ISL VLAN ID.
If the advertisement is sent because an Advertisement Request for information on all VLANs was received, then the Summary Advertisement is followed by the minimum number of Subset Advertisement messages required to contain all information on all VLANs. The messages are sent in ascending order of ISL VLAN ID.
If the advertisement is sent because an Advertisement Request for information on a subset of VLANs was received, the Summary Advertisement is followed by the minimum number of Subset Advertisement messages required to contain all information on all VLANs. The messages are sent in ascending order of ISL VLAN ID, however, the transmission of Subset Advertisements that only contain information on unrequested VLANs is suppressed.
An Advertisement Request is sent after a reboot. Also, if any of the following actions occur then a timer is started:
A Subset Advertisement message is received that contains a configuration revision number that is higher than the device's currently known value.
A Summary Advertisement is received that contains a configuration revision number that is greater than the device's currently known value and that is not followed by any Subset Advertisements.
The expected number of Subset Advertisement messages is not received within a short period after receiving a Summary Advertisement message having a configuration revision number that is greater than the device's currently known value.
A Summary Advertisement is received that contains a configuration revision number that is more than one greater than the device's currently known value.
If the timer expires before either an Advertisement Request or Summary Request is received, then an Advertisement Request is sent.
When an Advertisement Request is sent because some Subset Advertisement messages were missed, the Advertisement Request is set to request only those VLANs that were missed.
The following information is displayed on this panel:
Summary Advertisements Received—Total number of VTP Summary Advertisements received for this management domain.
Subset Advertisements Received—Total number of VTP Subset Advertisements received for this management domain.
Summary Advertisements Sent—Total number of VTP Summary Advertisements sent for this management domain.
Subset Advertisements Sent—Total number of VTP Subset Advertisements sent for this management domain.
Advertisements Requests Received—Total number of VTP Advertisement Requests received for this management domain.
Advertisements Requests Sent—Total number of VTP Advertisement Requests sent for this management domain.
Revision Number Errors—Number of occurrences of configuration revision number errors for this management domain. A configuration revision number error occurs when a device receives a VTP advertisement for which:
The advertisement's Configuration Revision Number is the same as the current locally held value.
The advertisement's digest value is different from the current locally held value.
Configuration Digest Errors—Number of occurrences of configuration digest errors for this management domain. A configuration digest error occurs when a device receives a VTP advertisement for which:
The advertisement's Configuration Revision Number is greater than the current locally held value.
The advertisement's digest value does not match the VLAN information assumed by the receiver of the advertisement, where the information assumed is the combination of the information explicitly contained in the advertisement plus any omitted information as currently known by the receiving device.
This panel displays a list of the self-diagnostic tests that the Catalyst 3900 performs and the result of each. For information about running the diagnostic tests, refer to the "Resetting the Catalyst 3900" chapter.
The log can maintain a list of up to 200 messages. Once 200 messages have been logged, new messages received will be added to the end of the log and the oldest message will be deleted from the panel. The log entry numbers continue to increment, indicating the total number of messages received. The first (oldest) seven messages are displayed. You can use the options at the bottom of the panel to move through the message log.
You can scroll through the information to view your current configuration parameter settings. The summary includes:
Switch and stack information
VLAN configuration information
IP configuration information
SNMP configuration information
Spanning tree configuration information
Port status
CDP configuration information
Module configuration information
Message log
Diagnostic test results
To exit from the configuration summary and return to the Statistics menu, wait until the configuration summary dump is complete and then press any key.
