Table Of Contents

show snmp access

show snmp access-list

show snmp buffer

show snmp community

show snmp context

show snmp counters

show snmp engineid

show snmp group

show snmp ifalias

show snmp notify

show snmp rmonmemory

show snmp targetaddr

show snmp targetparams

show snmp user

show snmp view

show span

show spantree

show spantree backbonefast

show spantree blockedports

show spantree bpdu-filter

show spantree bpdu-guard

show spantree bpdu-skewing

show spantree conflicts

show spantree defaultcostmode

show spantree guard

show spantree mapping

show spantree mistp-instance

show spantree mst

show spantree mst config

show spantree portfast

show spantree portinstancecost

show spantree portvlancost

show spantree statistics

show spantree summary

show spantree uplinkfast

show startup-config

show summertime

show system

show system highavailability

show system supervisor-update

show system switchmode

show tacacs

show tech-support

22

show snmp access

To display SNMP access information, use the show snmp access command.

show snmp access [volatile | nonvolatile | read-only]

show snmp access [-hex] groupname security-model {v1 | v2c}

show snmp access [-hex] groupname security-model v3 {noauthentication | authentication | privacy} [context [-hex] contextname]

Syntax Description

volatile	(Optional) Displays information for volatile storage types.
nonvolatile	(Optional) Displays information for nonvolatile storage types.
read-only	(Optional) Displays information for read-only storage types.
-hex	(Optional) Displays groupname, username, and contextname as a hexadecimal character.
groupname	Name of the SNMP group or collection of users who have a common access policy.
security-model v1 | v2c | v3	Specifies security model v1, v2c, or v3.
noauthentication	Displays information for security models not set to use authentication protocol.
authentication	Displays information for authentication protocol.
privacy	Displays information regarding messages sent on behalf of the user that are protected from disclosure.
context contextname	(Optional) Specifies the name of a context string.

Defaults

The default storage type is volatile.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you use special characters for the groupname (nonprintable delimiters for these parameters), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

If you do not enter a context name, a NULL context string is used.

There are three versions of SNMP:

•Version 1 (SNMPv1)—This is the initial implementation of SNMP. Refer to RFC 1157 for a full description of functionality.

•Version 2 (SNMPv2c)—The second release of SNMP, described in RFC 1902, has additions and enhancements to data types, counter size, and protocol operations.

•Version 3 (SNMPv3)—This is the most recent version of SNMP and is fully described in RFC 2571, RFC 2572, RFC 2573, RFC 2574, and RFC 2575. SNMPv3 has significant enhancements to administration and security.

The SNMP functionality on the Catalyst enterprise LAN switches for SNMP v1 and SNMP v2c remains intact; however, the functionality has greatly expanded for SNMPv3. Refer to the "Configuring SNMP" chapter of the Catalyst 6500 Series Switch Software Configuration Guide for more information on SNMPv3.

The read-only keyword is supported for security model v3 only.

Examples

This example shows how to display all SNMP access information:

Console> (enable) show snmp access 

Group Name:defaultROgroup

Context:

Security Model:v1

Security Level:noauthentication

Context Match:vlan-1

Read View:defaultAdminView

Write View:

Notify View:defaultAdminView

Storage Type:read-only

Row Status:active

Group Name:defaultROgroup

Context:

Security Model:v2c

Secuirty Level:noauthentication

Context Match:vlan-55

Read View:defaultAdminView

Write View:

Notify View:defaultAdminView

Storage Type:read-only

Row Status:active

Related Commands

clear snmp access
set snmp access
show snmp context

show snmp access-list

To display SNMP access list numbers and corresponding IP addresses and IP masks, use the show snmp access-list command.

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display SNMP access list numbers and corresponding IP addresses and IP masks:

Console> show snmp access-list 

Access-Number   IP-Addresses/IP-Mask 

-------------   ------------------------- 

1               172.20.60.100/255.0.0.0 

                1.1.1.1/- 

2               172.20.60.7/- 

                2.2.2.2/- 

3               2.2.2.2/155.0.0.0 

4               1.1.1.1/2.1.2.4 

                2.2.2.2/- 

                2.2.2.5/- 

Related Commands

clear snmp access-list
set snmp access-list

show snmp buffer

To display the number of SNMP packets that can be saved in the SNMP UDP socket receive buffer, use the show snmp buffer command.

show snmp buffer

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display the number of SNMP socket packets that can be saved in the SNMP UDP socket receive buffer:

Console> show snmp buffer 

SNMP socket receive buffer:40 packets 

Console> 

Related Commands

set snmp buffer

show snmp community

To display SNMP context information, use the show snmp community command.

show snmp community

show snmp community [read-only | volatile | nonvolatile]

show snmp community index [-hex] {index name}

Syntax Description

read-only	(Optional) Specifies that the community is defined as read only.
volatile	(Optional) Specifies the community type is defined as temporary memory and the content is deleted if the device is turned off.
nonvolatile	(Optional) Specifies the community type is defined as persistent memory and the content remains after the device is turned off and on again.
index	Specifies the index of community names.
-hex	(Optional) Displays index name as a hexadecimal character.
index name	Name of the community index.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal and privileged.

Usage Guidelines

If you enter the show snmp community command in privileged mode, the output display includes information for the read-only, the read-write, and the read-write-all community strings. If you enter the show snmp community command in normal mode, the display includes only information for the read-only community string.

Examples

This example shows the output when you enter the show snmp community command for the read-only community string in normal mode:

Console> show snmp community

Community Index: sysCommunityRo.0

Community Name: public

Security Name: public

Context Name:

Transport Tag:

Storage Type: read-only

Row Status: active

Console>

This example shows the display output when you enter the show snmp community command for the read-only, the read-write, and the read-write-all community strings in privileged mode:

Console> (enable) show snmp community

Community Index: sysCommunityRo.0

Community Name: public

Security Name: public

Context Name:

Transport Tag:

Storage Type: read-only

Row Status: active

Community Index: sysCommunityRw.0

Community Name: private

Security Name: private

Context Name:

Transport Tag:

Storage Type: read-only

Row Status: active

Community Index: sysCommunityRwa.0

Community Name: secret

Security Name: secret

Context Name:

Transport Tag:

Storage Type: read-only

Row Status: active

Console> (enable) 

Related Commands

clear snmp community
set snmp community

show snmp context

To display SNMP context information, use the show snmp context command.

show snmp context

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display SNMP context information:

Console> (enable) show snmp context 

Index Context

----- --------

    0 

    1 vlan-1

    2 vlan-55

    3 vlan-1002

    4 vlan-1003

    5 vlan-1004

    6 vlan-1005

Console> (enable) 

Related Commands

clear snmp access
set snmp access
show snmp access

show snmp counters

To display SNMP counter information, use the show snmp counters command.

show snmp counters [v3 | {{mod/port} {dot1d | dot3 | hcrmon | ifmib | rmon}}]

Syntax Description

v3	(Optional) Specifies SNMPv3 counters.
mod/port	Module number and port number.
dot1d	Specifies dot1d counters.
dot3	Specifies dot3 counters.
hcrmon	Specifies HCRMON counters.
ifmib	Specifies if-MIB counters.
rmon	Specifies RMON counters.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal

Usage Guidelines

There are three versions of SNMP:

•Version 1 (SNMPv1)—This is the initial implementation of SNMP. Refer to RFC 1157 for a full description of functionality.

•Version 2 (SNMPv2c)—The second release of SNMP, described in RFC 1902, has additions and enhancements to data types, counter size, and protocol operations.

•Version 3 (SNMPv3)—This is the most recent version of SNMP and is fully described in RFC 2571, RFC 2572, RFC 2573, RFC 2574, and RFC 2575. SNMPv3 has significant enhancements to administration and security.

The SNMP functionality on the Catalyst enterprise LAN switches for SNMP v1 and SNMP v2c remains intact; however, the functionality has greatly expanded for SNMPv3. Refer to the "Configuring SNMP" chapter of the Catalyst 6500 Series Switch Software Configuration Guide for more information on SNMPv3.

Examples

This example shows how to display all SNMP counters:

Console> show snmp counters

mib2 SNMP group counters:

snmpInPkts                 = 13993     

snmpOutPkts                = 13960     

snmpInBadVersions          = 0         

snmpInBadCommunityNames    = 33        

snmpInBadCommunityUses     = 0         

snmpInASNParseErrs         = 0         

snmpInTooBigs              = 0         

snmpInNoSuchNames          = 0         

snmpInBadValues            = 0         

snmpInReadOnlys            = 0         

snmpInGenErrs              = 0         

snmpInTotalReqVars         = 61747     

snmpInTotalSetVars         = 0         

snmpInGetRequests          = 623       

snmpInGetNexts             = 13337     

snmpInSetRequests          = 0         

snmpInGetResponses         = 0         

snmpInTraps                = 0         

snmpOutTooBigs             = 0         

snmpOutNoSuchNames         = 230       

snmpOutBadValues           = 0         

snmpOutGenErrs             = 0         

snmpOutGetRequests         = 0         

snmpOutGetNexts            = 0         

snmpOutSetRequests         = 0         

snmpOutGetResponses        = 13960     

snmpOutTraps               = 0         

Console> 

Table 2-77 describes the fields in the show snmp counters command output.

Table 2-77 show snmp counters Command Output Fields 

Field	Description
snmpInPkts	Number of messages delivered to the SNMP entity from the transport service.
snmpOutPkts	Number of SNMP messages passed from the SNMP protocol entity to the transport service.
snmpInBadVersions	Number of SNMP messages delivered to the SNMP entity for an unsupported SNMP version.
snmpInBadCommunityNames	Number of SNMP messages delivered to the SNMP entity that used an SNMP community name not known to said entity.
snmpInBadCommunityUses	Number of SNMP messages delivered to the SNMP entity that represented an SNMP operation not allowed by the SNMP community named in the message.
snmpInASNParseErrs	Number of ASN.1 or BER errors encountered by the SNMP entity when decoding received SNMP messages.
snmpInTooBigs	Number of SNMP PDUs delivered to the SNMP protocol entity with the value of the error-status field as "tooBig."
snmpInNoSuchNames	Number of SNMP PDUs delivered to the SNMP protocol entity with the value of the error-status field as "noSuchName."
snmpInBadValues	Number of SNMP PDUs delivered to the SNMP protocol entity with the value of the error-status field as "badValue."
snmpInReadOnlys1	Number of valid SNMP PDUs delivered to the SNMP protocol entity with the value of the error-status field as "readOnly."
snmpInGenErrs	Number of SNMP PDUs delivered to the SNMP protocol entity with the value of the error-status field as "genErr."
snmpInTotalReqVars	Number of MIB objects retrieved successfully by the SNMP protocol entity as the result of receiving valid SNMP Get-Request and Get-Next PDUs.
snmpInTotalSetVars	Number of MIB objects altered successfully by the SNMP protocol entity as the result of receiving valid SNMP Set-Request PDUs.
snmpInGetRequests	Number of SNMP Get-Request PDUs accepted and processed by the SNMP protocol entity.
snmpInPkts	Number of messages delivered to the SNMP entity from the transport service.
snmpOutPkts	Number of SNMP messages passed from the SNMP protocol entity to the transport service.
snmpInBadVersions	Number of SNMP messages delivered to the SNMP entity for an unsupported SNMP version.
snmpInBadCommunityNames	Number of SNMP messages delivered to the SNMP entity that used an SNMP community name not known to said entity.
snmpInBadCommunityUses	Number of SNMP messages delivered to the SNMP entity that represented an SNMP operation not allowed by the SNMP community named in the message.
snmpInASNParseErrs	Number of ASN.1 or BER errors encountered by the SNMP entity when decoding received SNMP messages.
snmpInTooBigs	Number of SNMP PDUs delivered to the SNMP protocol entity with the value of the error-status field as "tooBig."
snmpInNoSuchNames	Number of SNMP PDUs delivered to the SNMP protocol entity with the value of the error-status field as "noSuchName."
snmpInBadValues	Number of SNMP PDUs delivered to the SNMP protocol entity with the value of the error-status field as "badValue."
snmpInGenErrs	Number of SNMP PDUs delivered to the SNMP protocol entity with the value of the error-status field as "genErr."
snmpInTotalReqVars	Number of MIB objects retrieved successfully by the SNMP protocol entity as the result of receiving valid SNMP Get-Request and Get-Next PDUs.
snmpInTotalSetVars	Number of MIB objects altered successfully by the SNMP protocol entity as the result of receiving valid SNMP Set-Request PDUs.
snmpInGetRequests	Number of SNMP Get-Request PDUs accepted and processed by the SNMP protocol entity.
snmpInGetNexts	Number of SNMP Get-Next PDUs accepted and processed by the SNMP protocol entity.
snmpInSetRequests	Number of SNMP Set-Request PDUs accepted and processed by the SNMP protocol entity.
snmpInGetResponses	Number of SNMP Get-Response PDUs accepted and processed by the SNMP protocol entity.
snmpInTraps	Number of SNMP Trap PDUs accepted and processed by the SNMP protocol entity.
snmpOutTooBigs	Number of SNMP PDUs generated by the SNMP protocol entity with the value of the error-status field as "tooBig."
snmpOutNoSuchNames	Number of SNMP PDUs generated by the SNMP protocol entity with the value of the error-status as "noSuchName."
snmpOutBadValues	Number of SNMP PDUs generated by the SNMP protocol entity with the value of the error-status field as "badValue."
snmpOutGenErrs	Number of SNMP PDUs generated by the SNMP protocol entity with the value of the error-status field as "genErr."
snmpOutGetRequests	Number of SNMP Get-Request PDUs generated by the SNMP protocol entity.
snmpOutGetNexts	Number of SNMP Get-Next PDUs generated by the SNMP protocol entity.
snmpOutSetRequests	Number of SNMP Set-Request PDUs generated by the SNMP protocol entity.
snmpOutGetResponses	Number of SNMP Get-Response PDUs generated by the SNMP protocol entity.
snmpOutTraps	Number of SNMP Trap PDUs generated by the SNMP protocol entity.

1 It is a protocol error to generate an SNMP PDU that contains the value "readOnly" in the error-status field. This object is provided as a means of detecting incorrect implementations of the SNMP. 1 This example shows how to display the SNMPv3 counters: 1 Console> show snmp counters v3 1 snmpv3 MPD statistics: 1 snmpUnknownSecurityModels = 0 1 snmpInvalidMsgs = 0 1 snmpUnknownPDUHandlers = 0 1 snmpv3 TARGET statistics: 1 snmpUnavailableContexts = 0 1 snmpUnknownContexts = 0 1 snmpv3 USM statistics: 1 usmStatsUnsupportedSecLevels = 0 1 usmStatsNotInTimeWindows = 0 1 usmStatsUnknownUserNames = 0 1 usmStatsUnknownEngineIDs = 0 1 usmStatsWrongDigests = 0 1 usmStatsDecryptionErrors = 0 1 Console>

show snmp engineid

To display the SNMP local engine ID, use the show snmp engineid command.

show snmp engineid

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If the SNMP engine ID is cleared, the system automatically regenerates a local SNMP engine ID.

The SNMP engine and the SNMP entity have a one-to-one mapping. You can also identify the SNMP entity, which is represented as hexadecimal numbers only, and must be from 5 to 32 bytes long; for example, 00:00:00:09:0a:fe:ff:12:97:33:45:12.

Examples

This example shows how to display the SNMP engine ID:

Console> (enable) show snmp engineid

EngineId: 00:00:00:09:00:d0:00:4c:18:00

Engine Boots: 1234455

Console> (enable) 

Table 2-78 describes the fields in the show snmp engineid command output.

Table 2-78 show snmp engineid Command Output Fields 

Field	Description
EngineId	String identifying the name of the SNMP copy on the device.
Engine Boots	Number of times an SNMP engine has been started or reinitialized.

Related Commands

show snmp

show snmp group

To display the name of the SNMP group or collection of users who have a common access policy, use the show snmp group command.

show snmp group [volatile | nonvolatile | read-only]

show snmp group [-hex] {groupname} [-hex] user {username}
[security-model {v1 | v2c | v3}]

Syntax Description

volatile	(Optional) Specifies the storage type is defined as temporary memory and the content is deleted if the device is turned off.
nonvolatile	(Optional) Specifies the storage type is defined as persistent memory and the content remains after the device is turned off and on again.
read-only	(Optional) Specifies that the storage type is defined as read only.
-hex	(Optional) Displays groupname and username as a hexadecimal character.
groupname	Name of the SNMP group or collection of users who have a common access policy.
user username	Specifies the SNMP group username.
security-model v1 | v2c | v3	(Optional) Specifies security model v1, v2c, or v3.

Defaults

The default storage type is volatile.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you use special characters for the groupname and username (nonprintable delimiters for these parameters), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

There are three versions of SNMP:

•Version 1 (SNMPv1)—This is the initial implementation of SNMP. Refer to RFC 1157 for a full description of functionality.

•Version 2 (SNMPv2c)—The second release of SNMP, described in RFC 1902, has additions and enhancements to data types, counter size, and protocol operations.

•Version 3 (SNMPv3)—This is the most recent version of SNMP and is fully described in RFC 2571, RFC 2572, RFC 2573, RFC 2574, and RFC 2575. SNMPv3 has significant enhancements to administration and security.

The SNMP functionality on the Catalyst enterprise LAN switches for SNMP v1 and SNMP v2c remains intact; however, the functionality has greatly expanded for SNMPv3. Refer to the "Configuring SNMP" chapter of the Catalyst 6500 Series Switch Software Configuration Guide for more information on SNMPv3.

The read-only keyword is supported for security model v3 only.

Examples

This example shows how to display the SNMP group:

Console> (enable) show snmp group

Security Model: v1

Security Name: public

Group Name: defaultROgroup

Storage Type: volatile

Row Status: active

Security Model: v1

Security Name: secret

Group Name: defaultRWALLgroup

Storage Type: volatile

Row Status: active

Security Model: v1

Security Name: private

Group Name: defaultRWgroup

Storage Type: volatile

Row Status: active

Security Model: v2c

Security Name: public

Group Name: defaultROgroup

Storage Type: volatile

Row Status: active

Console> (enable) 

Table 2-79 describes the fields in the show snmp group command output.

Table 2-79 show snmp group Command Output Fields 

Field	Description
Security Model	Security model used by the group.
Security Name	Security string definition.
Group Name	Name of the SNMP group or collection of users who have a common access policy.
Storage Type	Indicates whether the settings are volatile or nonvolatile.
Row Status	Status of the entry.

Related Commands

clear snmp group
set snmp group

show snmp ifalias

To display SNMP interface aliases, use the show snmp ifalias command.

show snmp ifalias [ifIndex]

show snmp ifalias module mod

show snmp ifalias vlan [vlan]

show snmp ifalias channel

Syntax Description

ifIndex	(Optional) Number of the interface index.
module	Displays module interface aliases.
mod	Number of the module.
vlan	Displays VLAN interface aliases.
vlan	(Optional) Number of the VLAN.
channel	Displays channel interface aliases.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you do not enter an interface index number, all interface aliases are displayed.

Related Commands

clear snmp ifalias
set snmp ifalias

show snmp notify

To display the snmpNotifyTable configuration, use the show snmp notify command.

show snmp notify [volatile | nonvolatile | read-only]

show snmp notify [-hex] {notifyname}

Syntax Description

volatile	(Optional) Specifies the storage type is defined as temporary memory and the content is deleted if the device is turned off.
nonvolatile	(Optional) Specifies the storage type is defined as persistent memory and the content remains after the device is turned off and on again.
read-only	(Optional) Specifies that the storage type is defined as read only.
-hex	(Optional) Displays notifyname as a hexadecimal character.
notifyname	A unique identifier to index the snmpNotifyTable.

Defaults

The default storage type is nonvolatile.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you use special characters for the notifyname value (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

The read-only keyword is supported for security model v3 only.

Examples

This example shows how to display the SNMP notify information for a specific notifyname value:

Console> (enable) show snmp notify snmpV1Notification

Notify Name: snmpV1Notification

Notify Tag: snmpV1Trap

Notify Type: trap

Storage Type: volatile

Row Status: active

Console> (enable)

Table 2-80 describes the fields in the show snmp notify command output.

Table 2-80 show snmp notify Command Output Fields 

Field	Description
Notify Name	Unique identifier used to index the snmpNotifyTable.
Notify Tag	Name of the entry in the snmpNotifyTable.
Notify Type	Type of notification.
Storage Type	Storage type (volatile or nonvolatile).
Row Status	Status of the entry.

Related Commands

clear snmp notify
set snmp notify

show snmp rmonmemory

To display the memory usage limit in percentage, use the show snmp rmonmemory command.

show snmp rmonmemory

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

The percentage value displayed indicates that you cannot create new RMON entries or restore entries from the NVRAM if the specified memory usage is exceeded.

Examples

This example shows how to display the RMON memory limit use:

Console> (enable) show snmp rmonmemory

85 percent

Console> (enable) 

Related Commands

set snmp rmonmemory

show snmp targetaddr

To display the SNMP target address entries in the snmpTargetAddressTable, use the show snmp targetaddr command.

show snmp targetaddr [volatile | nonvolatile | read-only]

show snmp targetaddr [-hex] {addrname}

Syntax Description

volatile	(Optional) Specifies the storage type is defined as temporary memory and the content is deleted if the device is turned off.
nonvolatile	(Optional) Specifies the storage type is defined as persistent memory and the content remains after the device is turned off and on again.
read-only	(Optional) Specifies that the storage type is defined as read only.
-hex	(Optional) Displays addrname as a hexadecimal character.
addrname	Name of the target agent; the maximum length is 32 bytes.

Defaults

The default storage type is nonvolatile.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you use special characters for the addrname value (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

The read-only keyword is supported for security model v3 only.

Examples

This example shows how to display specific target address information in the snmpTargetAddressTable:

Console> (enable) show snmp targetaddr cisco

Target Address Name: cisco

IP Address: 170.0.25.1

UDP Port#: 165

Timeout: 100

Retry count: 5

Tag List: tag1 tag2 tag3

Parameters: jeorge

Storage Type: nonvolatile

Row Status: active

Console> (enable)

Table 2-81 describes the fields in the show snmp targetaddr command output.

Table 2-81 show snmp targetaddr Command Output Fields 

Field	Description
Target Address Name	Name of the target address.
IP Address	Target IP address.
UDP Port #	Number of the UDP port of the target host to use.
Timeout	Number of timeouts.
Retry count	Number of retries.
Tag List	Tags that point to target addresses to send notifications to.
Parameters	Entry in the snmpTargetParamsTable; the maximum length is 32 bytes.
Storage Type	Storage type (volatile or nonvolatile).
Row Status	Status of the entry.

Related Commands

clear snmp targetaddr
set snmp targetaddr

show snmp targetparams

To display the SNMP parameters used in the snmpTargetParamsTable when generating a message to a target, use the show snmp targetparams command.

show snmp targetparams [volatile | nonvolatile | read-only]

show snmp targetparams [-hex] {paramsname}

Syntax Description

volatile	(Optional) Specifies that the storage type is defined as temporary memory and that the content is deleted if the device is turned off.
nonvolatile	(Optional) Specifies the storage type is defined as persistent memory and that the content remains after the device is turned off and on again.
read-only	(Optional) Specifies that the storage type is defined as read only.
-hex	(Optional) Displays paramsname as a hexadecimal character.
paramsname	Name of the parameter in the snmpTargetParamsTable; the maximum length is 32 bytes.

Defaults

The default storage type is volatile.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you use special characters for the paramsname value (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

The read-only keyword is supported for security model v3 only.

Examples

This example shows how to display specific target parameter information in the snmpTargetParamsTable:

Console> (enable) show snmp targetparams snmpV1TrapParams

Target Parameter Name: snmpV1TrapParams

Message Processing Model: v1

Security Name: public

Security Level: noauthentication

Storage Type: volatile

Row Status: active

Console> (enable)

Table 2-82 describes the fields in the show snmp targetparams command output.

Table 2-82 show snmp targetparams Command Output Fields 

Field	Description
Target Parameter Name	A unique identifier used to index the snmpTargetParamsTable.
Message Processing Model	Version number used by the Message Processing Model.
Security Name	Security string definition.
Security Level	Type of security level: •Authentication—The security level is set to use the authentication protocol. •Noauthentication—The security level is not set to use the authentication protocol.
Storage Type	Status of whether the settings are volatile or nonvolatile.
Row Status	Status of the entry.

Related Commands

clear snmp targetparams
set snmp targetparams

show snmp user

To display SNMP information for a specific user, use the show snmp user command.

show snmp user [volatile | nonvolatile | read-only]

show snmp user [-hex] {user} [remote {engineid}]

show snmp user summary

Syntax Description

volatile	(Optional) Specifies the storage type is defined as temporary memory and the content is deleted if the device is turned off.
nonvolatile	(Optional) Specifies the storage type is defined as persistent memory and the content remains after the device is turned off and on again.
read-only	(Optional) Specifies that the storage type is defined as read only.
-hex	(Optional) Displays user as a hexadecimal character.
user	Name of the SNMP user.
remote engineid	(Optional) Specifies the username on a remote SNMP engine.
summary	Specifies a summary of SNMP users.

Defaults

The default storage type is nonvolatile, and the local SNMP engine ID is used.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you use special characters for the user value (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

The read-only keyword is supported for security model v3 only.

Examples

This example shows how to display specific user information:

Console> (enable) show snmp user joe

EngineId: 00:11:22:33:44

User Name: joe

Authentication Protocol: md5

Privacy Protocol: des56

Storage Type: volatile

Row Status: active

Console> (enable)

Table 2-83 describes the fields in the show snmp user command output.

Table 2-83 show snmp user Command Output Fields 

Field	Description
EngineId	String identifying the name of the copy of SNMP on the device.
User Name	String identifying the name of the SNMP user.
Authentication Protocol	Type of authentication protocol.
Privacy Protocol	Type of privacy authentication protocol.
Storage Type	Status of whether the settings are volatile or nonvolatile.
Row Status	Status of the entry.

Related Commands

clear snmp user
set snmp user

show snmp view

To display the SNMP MIB view configuration, use the show snmp view command.

show snmp view [volatile | nonvolatile | read-only]

show snmp view [-hex] {viewname} {subtree}

Syntax Description

volatile	(Optional) Specifies the storage type is defined as temporary memory and the content is deleted if the device is turned off.
nonvolatile	(Optional) Specifies the storage type is defined as persistent memory and the content remains after the device is turned off and on again.
read-only	(Optional) Specifies that the storage type is defined as read only.
-hex	(Optional) Displays the viewname as a hexadecimal character.
viewname	Name of a MIB view.
subtree	Name of the subtree.

Defaults

The default view is volatile.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you use special characters for the viewname value (nonprintable delimiters for this parameter), you must use a hexadecimal keyword, which is one or two hexadecimal digits separated by a colon (:); for example, 00:ab:34.

A MIB subtree used with a mask defines a view subtree; it can be in OID format or a text name mapped to a valid OID.

The read-only keyword is supported for security model v3 only.

Examples

This example shows how to display the SNMP MIB view:

Console> (enable) show snmp view

View Name: defaultUserView

Subtree OID: 1.3.6.1

Subtree Mask: 

View Type: included

Storage Type: volatile

Row Status: active

Control> (enable)

Table 2-84 describes the fields in the show snmp view command output.

Table 2-84 show snmp view Command Output Fields 

Field	Description
View Name	Name of a MIB view.
Subtree OID	Name of a MIB subtree in OID format or a text name mapped to a valid OID.
Subtree Mask	Subtree mask can be all ones, all zeros, or a combination of both.
View Type	Status of whether the MIB subtree is included or excluded.
Storage Type	Storage type (volatile or nonvolatile).
Row Status	Status of the entry.

Related Commands

clear snmp view
set snmp view

show span

To display information about the current SPAN configuration, use the show span command.

show span [all]

Syntax Description

all	(Optional) Displays local and remote SPAN configuration information.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display SPAN information for the switch. In this example, the SPAN source is port 2/1 and the SPAN destination is port 2/12. Only transmit traffic is monitored. Normal incoming packets are disabled on the SPAN destination port. Monitoring multicast traffic is enabled.

Console> (enable) show span

----------------------------------------------------------

Destination     : Port 4/1

Admin Source    : Port 2/2

Oper Source     : Port 2/2

Direction       : transmit/receive

Incoming Packets: enabled

Learning        : -

Multicast       : enabled

Filter          : 10,20,30,40,50,60,70,80,90,100

Status          : inactive

Console> (enable)

Table 2-85 describes the fields in the show span command output.

Table 2-85 show span Command Output Fields 

Field	Description
Destination	Destination port for SPAN information.
Admin Source	Source port or VLAN for SPAN information.
Oper Source	Operator port or VLAN for SPAN information.
Direction	Status of whether transmit, receive, or transmit and receive information is monitored.
Incoming Packets	Status of whether reception of normal incoming packets on the SPAN destination port is enabled or disabled.
Learning	Status of whether learning is enabled or disabled for the SPAN destination port.
Multicast	Status of whether monitoring multicast traffic is enabled or disabled.
Filter	Monitored VLANs in source trunk ports.
Max. Bandwidth	Bandwidth limits for SPAN traffic, in Mbps.

Related Commands

clear config
set spantree root

show spantree

To display spanning tree information for a VLAN or port, use the show spantree command.

show spantree [vlan] [active]

show spantree mod/port

Syntax Description

vlan	(Optional) Number of the VLAN; valid values are from 1 to 1001 and from 1025 to 4094.
active	(Optional) Displays only the active ports.
mod/port	Number of the module and the port on the module.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you do not specify the VLAN number, VLAN 1 is displayed.

If you are in MISTP mode, instance information is not displayed.

The maximum length of the channel port list can be 47. The spaces in the Port(s) column may not be enough to display the entire list in one line. If this is the case, the port list is split into multiple lines. For example, in the following display, ports 6/5-8, 6/13, 6/15, 6/17, 6/19 are channeling:

...

Port(s)                  Vlan Port-State    Cost      Prio Portfast Channel_id

------------------------ ---- ------------- --------- ---- -------- ----------

6/5-8,6/13,6/15,6/17,6/1 1    not-connected 2684354   32   disabled 0 

9

...

The LACP channel protocol does not support half-duplex links. If a port is in active/passive mode and becomes half duplex, the port is suspended (and a syslog message is generated). The port is shown as "connected" using the show port command and as "not connected" using the show spantree command. This discrepancy is because the port is physically connected but never joined spanning tree. To get the port to join spanning tree, either set the duplex to full or set the channel mode to off for that port.

Examples

This example (while in PVST+ mode) shows how to display the active spanning tree port configuration for VLAN 1:

Console> (enable) show spantree 1 active

VLAN 1

Spanning tree mode          PVST+

Spanning tree type          ieee

Spanning tree enabled

Designated Root             00-60-70-4c-70-00

Designated Root Priority    16384

Designated Root Cost        19

Designated Root Port        2/3

Root Max Age   14 sec   Hello Time 2  sec   Forward Delay 10 sec

Bridge ID MAC ADDR          00-d0-00-4c-18-00

Bridge ID Priority          32768

Bridge Max Age 20 sec   Hello Time 2  sec   Forward Delay 15 sec

Port                     Vlan Port-State    Cost      Prio Portfast Channel_id

------------------------ ---- ------------- --------- ---- -------- ----------

 2/3                     1    forwarding           19   32 disabled 0

 2/12                    1    forwarding           19   32 disabled 0 

Console> (enable)

This example (while in MISTP mode) shows how to display the active spanning tree port configuration for VLAN 1:

Console> (enable) show spantree 1 active

VLAN 1

Spanning tree mode          MISTP

Spanning tree type          ieee

Spanning tree enabled

VLAN mapped to MISTP Instance: 1

Port                     Vlan Port-State    Cost      Prio Portfast Channel_id

------------------------ ---- ------------- --------- ---- -------- ----------

 2/3                     1    forwarding       200000   32 disabled 0

 2/12                    1    forwarding       200000   32 disabled 0

Console> (enable) 

This example (while in Rapid PVST+ mode) shows how to display the active spanning tree port configuration for VLAN 989:

Console> show spantree 989 active

VLAN 989

Spanning tree mode          RAPID-PVST+

Spanning tree type          ieee

Spanning tree enabled

Designated Root             00-02-7d-a4-53-dc

Designated Root Priority    8192

Designated Root Cost        0

Designated Root Port        1/0

Root Max Age   20 sec   Hello Time 2  sec   Forward Delay 15 sec

Bridge ID MAC ADDR          00-02-7d-a4-53-dc

Bridge ID Priority          8192

Bridge Max Age 20 sec   Hello Time 2  sec   Forward Delay 15 sec

Port                     State         Role Cost     Prio Type

------------------------ ------------- ---- -------- ---- --------------------

 3/3                     forwarding    DESG       19   32 P2P, PEER(STP)

 5/1                     forwarding    DESG        4   32 P2P, Edge

 6/5                     forwarding    DESG        4   32 P2P

Console>

This example (while in Rapid PVST+ mode) shows how to display the spanning tree configuration for module 5, port 1:

Console> show spantree 5/1

Edge Port:        Yes, (Configured) Disable

Link Type:        P2P, (Configured) Auto

Port Guard:   Default

Port                     Vlan State         Role Cost     Prio Type

------------------------ ---- ------------- ---- -------- ---- -----------------

 5/1                     1    forwarding    DESG        4   32 P2P, Edge

 5/1                     40   forwarding    DESG        4   32 P2P, Edge

 5/1                     500  forwarding    DESG        4   32 P2P, Edge

 5/1                     501  forwarding    DESG        4   32 P2P, Edge

 5/1                     856  forwarding    DESG        4   32 P2P, Edge

 5/1                     989  forwarding    DESG        4   32 P2P, Edge

Console>

Table 2-86 describes the fields in the show spantree command output:

Table 2-86 show spantree Command Output Fields  

Field	Description
VLAN	VLAN for which the spanning tree information is shown.
Spanning tree	Status of whether Spanning Tree Protocol is enabled or disabled.
Spanning tree mode	Current spanning tree mode: mistp, pvst+, mistp-pvst+, mst, or rapid pvst+.
Spanning tree type	Current spanning tree type: ieee or cisco.
Designated Root	MAC address of the designated spanning tree root bridge.
Designated Root Priority	Priority of the designated root bridge.
Designated Root Cost	Total path cost to reach the root.
Designated Root Port	Port through which the root bridge can be reached (shown only on nonroot bridges).
Root Max Age	Amount of time a BPDU packet should be considered valid.
Hello Time	Number of times the root bridge sends BPDUs.
Forward Delay	Amount of time the port spends in listening or learning mode.
Bridge ID MAC ADDR	Bridge MAC address.
Bridge ID Priority	Bridge priority.
Bridge Max Age	Bridge maximum age.
Forward Delay	Amount of time the bridge spends in listening and learning mode.
Port	Port number.
Vlan	VLAN to which the port belongs.
Port-State	Spanning tree port state (disabled, inactive, not-connected, blocking, listening, learning, forwarding, bridging, or type-pvid-inconsistent).
Role	Port role in the spanning tree: Root, Designated, Alternate, Back-up.
Cost	Cost associated with the port.
Prio	Priority associated with the port.
Portfast	Status of whether the port is configured to use the PortFast feature.
Channel_id	Channel ID number.

Related Commands

show spantree backbonefast
show spantree blockedports
show spantree portvlancost
show spantree statistics
show spantree summary
show spantree uplinkfast

show spantree backbonefast

To display whether the spanning tree BackboneFast Convergence feature is enabled, use the show spantree backbonefast command.

show spantree backbonefast

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

This command is not available in MISTP mode or in MST mode.

Examples

This example shows how to display whether the spanning tree BackboneFast Convergence feature is enabled:

Console> show spantree backbonefast

Backbonefast is enabled.

Console> 

Related Commands

set spantree backbonefast
show spantree defaultcostmode

show spantree blockedports

To display only the blocked ports on a per-VLAN or per-instance basis, use the show spantree blockedports command.

show spantree blockedports [vlans]

show spantree blockedports mistp-instance [instance]

show spantree blockedports mst [instance]

Syntax Description

vlans	(Optional) Number of the VLANs.
mistp-instance instance	Keyword and optional variable to display instance-specific information; valid values are from 1 to 16.
mst instance	Keyword and optional variable to display instance-specific information; valid values are from 0 to 15.

Defaults

The default is all blocked ports in all VLANs are displayed.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you do not specify a VLAN number, all blocked ports in the system are displayed.

Examples

This example shows how to display the blocked ports for VLAN 1002:

Console> show spantree blockedports 1002

Number of blocked ports (segments) in VLAN 1002 : 0

Console> 

This example shows how to display the blocked ports for an MISTP instance:

Console> show spantree blockedports mistp-instance 1

Number of blocked ports (segments) in Instance 1 : 0

Console> 

This example shows how to display the blocked ports for an MST instance:

Console> show spantree blockedports mst 0

Number of blocked ports (segments) in Instance 0: 0

Console>

Related Commands

show spantree

show spantree bpdu-filter

To display information about BPDU filtering, use the show spantree bpdu-filter command.

show spantree bpdu-filter [mod[/port]]

Syntax Description

mod	(Optional) Number of the module.
port	(Optional) Number of the port on the module.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display information about BPDU filtering on module 1:

Console> show spantree bpdu-filter 1

Global BPDU Filter is disabled on the switch.

Port                     BPDU-Filter

------------------------ -----------

 1/1                     Enable

 1/2                     Default

Console>

Related Commands

set spantree bpdu-filter

show spantree bpdu-guard

To display information about BPDU guard, use the show spantree bpdu-guard command.

show spantree bpdu-guard [mod[/port]]

Syntax Description

mod	(Optional) Number of the module.
port	(Optional) Number of the port on the module.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display information about BPDU guard on module 1:

Console> show spantree bpdu-guard 1

Global BPDU Guard is disabled on the switch.

Port                     BPDU-Guard

------------------------ ----------

 1/1                     Enable

 1/2                     Default

Console>

Related Commands

set spantree bpdu-guard

show spantree bpdu-skewing

To display BPDU skewing detection status, use the show spantree bpdu-skewing command.

show spantree bpdu-skewing vlan [mod/port]

show spantree bpdu-skewing {mistp-instance instance} mod/port

show spantree bpdu-skewing mst [instance | mod/port]

Syntax Description

vlan	Number of the VLAN; valid values are from 1 to 1005 and from 1025 to 4094.
mod/port	(Optional) Number of the module and the port on the module.
mistp-instance instance	Displays instance-specific information; valid values are from 1 to 16.
mst	Displays MST instance information.
instance	(Optional) Number of the instance; valid values are from 1 to 15.
mod/port	(Optional) Number of the module and the port on the module.

Defaults

The default is the BPDU skew status for all VLANs is displayed.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

The mistp-instance instance options are available in MISTP mode only.

You can use this command to troubleshoot slow network convergence due to skewing. Skewing occurs when spanning tree timers lapse, expected BPDUs are not received, and spanning tree detects topology changes. The difference between the expected result and the BPDUs actually received is a skew. The skew causes BPDUs to reflood the network to keep the spanning tree topology database up to date.

Examples

This example shows how to display the BPDU skew status for a VLAN:

Console> show spantree bpdu-skewing 1

Bpdu skewing statistics for vlan 1

Port            Last Skew (ms)   Worst Skew (ms)       Worst Skew Time

--------------  ---------------  ---------------  -------------------------

8/2                        5869           108370  Tue Nov 21 2000, 06:25:59

8/4                        4050           113198  Tue Nov 21 2000, 06:26:04

8/6                      113363           113363  Tue Nov 21 2000, 06:26:05

.

.

.

8/24                        4111          113922  Tue Nov 21 2000, 06:26:05

8/26                      113926          113926  Tue Nov 21 2000, 06:26:05

8/28                        4111          113931  Tue Nov 21 2000, 06:26:05

Console> (enable) 

This example shows how to display the BPDU skew status for a specific module and port on a VLAN:

Console> (enable) show spantree bpdu-skewing 1 5/9

Bpdu skewing statistics for vlan 1

Port            Last Skew (ms)   Worst Skew (ms)       Worst Skew Time

--------------  ---------------  ---------------  -------------------------

 5/9                       3992             4407  Mon Mar 26 2001, 11:31:37

Console> (enable) 

Table 2-87 describes the fields in the show spantree bpdu-skewing command output.

Table 2-87 show spantree bpdu-skewing Command Output Fields 

Field	Description
Last Skew (ms)	Duration of the last skew; absolute time in milliseconds.
Worst Skew (ms)	Duration of the worst skew; absolute time in milliseconds.
Worst Skew Date	Date and time of the worst skew duration.

Related Commands

set spantree bpdu-skewing
show spantree summary

show spantree conflicts

To display the MAC address of the root switch in the instance, the time remaining before the VLAN joins the instance, and the number of seconds left before the entry expires and is removed from the table, use the show spantree conflicts command.

show spantree conflicts vlan

Syntax Description

vlan	Number of the VLAN.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

This command is available in MISTP or MISTP/PVST+ mode only.

This command is not available in MST mode.

When only one entry is printed (or when all the entries are associated to the same instance), the VLAN is mapped to that instance. If two or more entries are associated with different instances, then the VLAN has a conflict, is blocked, and is not mapped to any instance.

The time left timers associated with the mapping of a VLAN to an MISTP instance are started with the maximum age of the BPDU and can be up to the maximum age. This field can show "inactive" to indicate the MAC address is the same as the MAC address of the switch (for example, the switch is the root). In all the other cases, the entry is a number, and the timer restarts every time an incoming BPDU confirms the mapping.

The delay timer field can display the following:

•Number in seconds that represents the timer running; this timer can be up to the maximum forward delay. The timer is initialized with the fwd delay.

•If the timer is not running, "inactive" is displayed because the VLAN is already mapped to the instance or a conflict is in progress.

Examples

This example shows the output if there are no conflicts on the specified VLAN:

Console> (enable) show spantree conflicts 1

No conflicts for vlan 1

Inst MAC               Delay     Time left

---- ----------------- --------- ---------

 1   00-30-a3-4a-0c-00  inactive        35

Console> (enable) 

This example shows the output if there are conflicts on the specified VLAN:

Console> (enable) show spantree conflicts 1

Inst MAC               Delay     Time left

---- ----------------- --------- ---------

 1   00-30-a3-4a-0c-00  inactive        35

 3   00-30-f1-e5-00-01  inactive        23

Console> (enable) 

Table 2-88 describes the fields in the show spantree conflicts command output.

Table 2-88 show spantree conflicts Command Output Fields 

Field	Description
Inst	Instance number that is requesting to map the VLAN.
MAC	MAC address of the root sending the BPDU claiming the VLAN, taken from the root ID of the BPDU.
Delay	Time remaining before the VLAN joins the instance.
Time left	Age of the entry, as time in seconds left before the entry expires and is removed from the table.

Related Commands

show spantree mistp-instance

show spantree defaultcostmode

To display the current default port cost mode, use the show spantree defaultcostmode command.

show spantree defaultcostmode

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display the default port cost mode:

Console> (enable) show spantree defaultcostmode

Portcost and portvlancost set to use 802.1d default values.

Console> (enable)

Related Commands

set spantree defaultcostmode

show spantree guard

To display spanning tree guard information for the VLANs or instances on a port, use the show spantree guard command.

show spantree guard [vlan]

show spantree guard [mod/port]

show spantree guard mistp-instance [instance]

show spantree guard mistp-instance [mod/port]

show spantree guard mst [instance]

show spantree guard mst [mod/port]

Syntax Description

vlan	(Optional) Number of the VLAN; valid values are from 1 to 1005 and from 1025 to 4094.
mod/port	(Optional) Number of the module and the port on the module.
mistp-instance instance	Keyword and optional variable to display MISTP instance-specific information; valid values are from 1 to 16.
mst instance	Keyword and optional variable to display MST instance-specific information; valid values are from 0 to 15.

Defaults

The default is VLAN 1, and the default port list is "all the ports" in the specified or default VLAN.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

he command works on a per-port basis. When you enable the feature on a port, a logical port is blocked on a per-VLAN basis. This means that you can specify a port (or a list of ports) and specify a VLAN, but you cannot specify both.

Examples

This example shows how to display spanning tree guard information for a specific VLAN:

Console> show spantree guard 1004

Port Vlan Port-State           Guard type

---- ---- -------------------  ------------

1/1  1004  root-inconsistent    root

1/2  1004  not-connected        none

2/1  1004  loop-inconsistent    loop

2/2  1004  forwarding           loop

.

.

.

Console> 

This example shows how to display spanning tree guard information for a specific instance:

Console> show spantree guard mistp-instance 3

Port                     Inst Port-State    Guard Type

------------------------ ---- ------------- ----------

1/1                      3    listening     root

1/2                      3    listening     root

Console>  

Related Commands

set spantree guard

show spantree mapping

To display VLAN and instance mapping information, use the show spantree mapping.

show spantree mapping [config]

Syntax Description

config

(Optional) Displays mappings configured on the local switch.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If you do not enter the optional config keyword, the mapping information propagated from the root switch in the instance is displayed. This runtime command is available in MISTP or MISTP-PVST+ mode only. If you enter the config keyword, the list of mappings configured on the local switch is displayed. It is available in PVST+ mode.

If you enter this command in PVST mode, this message displays:

Runtime vlan and instance mapping information is only available in MISTP

or

MISTP-PVST mode. Use 'show spantree mapping config' to view mappings

configured on the local switch.

Examples

This example shows how to display runtime VLAN and instance mapping information:

Console> (enable) show spantree mapping

Inst Root Mac          Vlans

---- ----------------- --------------------------------------------------

1    00-50-3e-78-70-00 1

2    00-50-3e-78-70-00 -

3    00-50-3e-78-70-00 -

4    00-50-3e-78-70-00 -

5    00-50-3e-78-70-00 -

6    00-50-3e-78-70-00 -

7    00-50-3e-78-70-00 -

8    00-50-3e-78-70-00 -

9    00-50-3e-78-70-00 -

10   00-50-3e-78-70-00 -

11   00-50-3e-78-70-00 -

12   00-50-3e-78-70-00 -

13   00-50-3e-78-70-00 -

14   00-50-3e-78-70-00 -

15   00-50-3e-78-70-00 -

16   00-50-3e-78-70-00 -

Console> (enable) 

This example shows how to display mappings configured on the local switch:

Console> (enable) show spantree mapping config

Inst Root Mac          Vlans

---- ----------------- --------------------------------------------------

1    -                 1

2    -                 -

3    -                 -

4    -                 -

5    -                 -

6    -                 -

7    -                 -

8    -                 -

9    -                 -

10   -                 -

11   -                 -

12   -                 -

13   -                 -

14   -                 -

15   -                 -

16   -                 -

Console> (enable) 

Related Commands

set vlan

show spantree mistp-instance

To display instance information, use the show spantree mistp-instance command.

show spantree mistp-instance [instance] [active]

show spantree mistp-instance mod/port

Syntax Description

instance	(Optional) Instance number; valid values are from 1 to 16.
active	(Optional) Displays only active ports.
mod/port	Number of the module and the port on the module.

Defaults

The default instance is 1.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

This command is available in MISTP mode only.

If you specify the mod/port number only, the VLAN mapping information is not displayed.

Examples

This example shows how to display information regarding active instances only:

Console> show spantree mistp-instance active

Instance 1

Spanning tree mode          MISTP

Spanning tree type          ieee

Spanning tree instance enabled

Designated Root             00-d0-00-4c-18-00

Designated Root Priority    32769  (root priority: 32768, sys ID ext: 1)

Designated Root Cost        0

Designated Root Port        none

VLANs mapped:               1

Root Max Age   20 sec   Hello Time 2  sec   Forward Delay 15 sec

Bridge ID MAC ADDR          00-d0-00-4c-18-00

Bridge ID Priority          32769  (bridge priority: 32768, sys ID ext: 1)

VLANs mapped:               1

Bridge Max Age 20 sec   Hello Time 2  sec   Forward Delay 15 sec

Port                     Inst Port-State    Cost      Prio Portfast Channel_id

------------------------ ---- ------------- --------- ---- -------- ----------

 2/3                     1    forwarding       200000   32 disabled 0

 2/12                    1    forwarding       200000   32 disabled

Console> 

Table 2-89 describes the fields in the show spantree mistp-instance command output:

Table 2-89 show spantree mistp-instance Command Output Fields 

Field	Description
Instance	Instance for which spanning tree information is shown.
Spanning tree mode	Spanning tree mode.
Spanning tree type	Spanning tree type.
Spanning tree instance	Status of whether spanning tree instance is enabled or disabled.
Designated Root	MAC address of the designated spanning tree root bridge.
Designated Root Priority	Priority of the designated root bridge.
Designated Root Cost	Total path cost to reach the root.
Designated Root Port	Port through which the root bridge can be reached (shown only on nonroot bridges).
VLANs mapped	Number of VLANs mapped.
Root Max Age	Amount of time a BPDU packet should be considered valid.
Hello Time	Number of times the root bridge sends BPDUs.
Forward Delay	Amount of time the port spends in listening or learning mode.
Bridge ID MAC ADDR	Bridge MAC address.
Bridge ID Priority	Part of the bridge identifier and is taken as the most significant part of the bridge ID comparisons.
Bridge Max Age	Bridge maximum age.
Hello Time	Amount of time the bridge sends BPDUs.
Forward Delay	Amount of time the bridge spends in listening or learning mode.
Port	Port number.
Instance	Instance to which the port belongs.
Port-State	Spanning tree port state (disabled, inactive, not-connected, blocking, listening, learning, forwarding, bridging, or type-pvid-inconsistent).
Cost	Cost associated with the port.
Prio	Priority associated with the port.
Portfast	Status of whether the port is configured to use the PortFast feature.
Channel_id	Channel ID number.

Related Commands

set spantree portinstancecost
set spantree portinstancepri

show spantree mst

To display MST information, use the show spantree mst command.

show spantree mst [instance | mod/port]

show spantree mst active

Syntax Description

instance	Number of the instance; valid values are from 0 to 15.
mod/port	Number of the module and the port on the module.
active	Displays active IST ports only.

Defaults

The default instance is instance 0 (IST).

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

You can use the show spantree mst command to display VLAN-specific spanning tree information.

Examples

This example shows how to display MST information:

Console> (enable) show spantree mst 

Spanning tree mode          MST 

Instance                    0 

VLANs Mapped:              2-4094 

Designated Root             00-04-9b-ba-48-00 

Designated Root Priority    32768  (root priority:32768, sys ID ext:0) 

Designated Root Cost        2000000 

Designated Root Port        7/48 

Root Max Age   20 sec   Hello Time 2  sec   Forward Delay 15 sec 

IST Master ID MAC ADDR      00-d0-00-b3-68-00 

IST Master ID Priority      32768 

IST Master Path Cost        0          Remaining Hops 20 

Bridge ID MAC ADDR          00-d0-00-b3-68-00 

Bridge ID Priority          32768  (bridge priority:32768, sys ID ext:0) 

Bridge Max Age 20 sec   Hello Time 2  sec   Forward Delay 15 sec  Max Hops 20 

Port                     State         Role Cost     Prio Type 

------------------------ ------------- ---- -------- ---- -------------------- 

 5/1                     forwarding    DESG    20000   32 P2P, Boundary(STP) 

 5/2                     forwarding    DESG    20000   32 P2P, Boundary(STP) 

 7/48                    forwarding    ROOT  2000000   32 Shared, Boundary 

Console> (enable)

This example shows how to display MST instance-specific information for instance 1:

Console> (enable) show spantree mst 1 

Spanning tree mode          MST 

Instance                    1 

VLANs Mapped:              1 

Designated Root             00-d0-00-b3-68-00 

Designated Root Priority    32769  (root priority:32768, sys ID ext:1) 

Designated Root Cost        0          Remaining Hops 20 

Designated Root Port        1/0 

Bridge ID MAC ADDR          00-d0-00-b3-68-00 

Bridge ID Priority          32769  (bridge priority:32768, sys ID ext:1) 

Port                     State         Role Cost     Prio Type 

------------------------ ------------- ---- -------- ---- -------------------- 

 5/1                     forwarding    BDRY    20000   32 P2P, Boundary(STP) 

 5/2                     forwarding    BDRY    20000   32 P2P, Boundary(STP) 

 7/48                    forwarding    BDRY  2000000   32 Shared, Boundary 

Console> (enable)

This example shows how to display MST instance-specific information for port 6 on module 3:

console> show spantree mst 3/6

       Boundary Port:  Yes (STP)

       Edge Port:      No, (Configured) Default

       Port Guard:         Default

       Link Type:     P2P(Configured) Auto

       Inst State         Role Cost      Prio VLANs 

       ---- ------------- ---- --------- ---- --------------------------------

       --

       0    forwarding    ROOT 2000000   32   1

Console>

Related Commands

clear spantree mst
set spantree mst config
show spantree
show spantree mst config

show spantree mst config

To display the MST region information present in NVRAM and to display changes that have not been applied to the MST region configuration yet, use the show spantree mst config command.

show spantree mst config

Syntax Description

This command has no keywords or arguments.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display the MST region information:

Console> show spantree mst config

Currnet (NVRAM) MST Configuration

Configuration Name:Cisco                         Revision: 1

Instance Vlans

-------- ----------------- ------------------------

IST      401-1005,1025-1999,2201-4096 

1        1-50

2        51-100

3        101-300

4        - 

5        - 

6        2000-2200 

7        301-400 

8        -

9        -

10       -

11       -

12       -

13       -

14       -

15       -

===============================================

New MST Region Configuration (Not applied yet)       

Region Name:Catalyst                         Revision: 6000

Instance Vlans

-------- ----------------- ------------------------

IST      1-50,401-1005,1025-1999,2201-4096 

1        -

2        51-100

3        101-300

4        -    

5        - 

6        2000-2200 

7        301-400 

8        -

9        -

10       -

11       -

12       -

13       -

14       -

15       -

================================================

Edit buffer is locked by: Console

Console> (enable)

Related Commands

clear spantree mst
set spantree mst config

show spantree portfast

To display PortFast information, use the show spantree portfast command.

show spantree portfast [mod/port]

Syntax Description

mod/port

(Optional) Number of the module and the port on the module.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

When you enter the show spantree portfast command, if the designation for a port is displayed as an edge port, it is a PortFast port. Refer to Chapter 8, "Configuring Spanning Tree," and Chapter 9, "Configuring Spanning Tree PortFast, UplinkFast, BackboneFast, and Loop Guard," of the Catalyst 6500 Series Switch Software Configuration Guide for more information about PortFast.

Examples

This example shows how to display PortFast information:

Console> show spantree portfast

Portfast BPDU guard is disabled.

Portfast BPDU filter is disabled. 

Console>

This example shows how to display PortFast information for a specific module and port:

Console> show spantree portfast 3/1

Portfast:    Default

BPDU Filter: Enable

BPDU Guard:  Default

Portfast BPDU guard is disabled.

Portfast BPDU filter is disabled.

Console>

Related Commands

set spantree portfast
set spantree portfast bpdu-filter
set spantree portfast bpdu-guard

show spantree portinstancecost

To show the path cost for the instances on a port, use the show spantree portinstancecost command.

show spantree portinstancecost mod/port

Syntax Description

mod/port

Number of the module and the port on the module.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display the path cost for the MISTP instances on port 1/1:

Console> show spantree portinstancecost 1/1

Port 1/1 instances 1-16 have path cost 20000.

Console> 

Related Commands

clear spantree portinstancecost
set spantree portinstancecost

show spantree portvlancost

To show the path cost for the VLANs or extended-range VLANs, use the show spantree portvlancost command.

show spantree portvlancost mod/port | extended-range

Syntax Description

mod/port	Number of the module and the port on the module.
extended-range	Specifies extended-range VLANs.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

This command is valid in PVST+ mode only.

Extended-range VLANs are from 1025 to 4094 and cannot be managed using VTP.

Examples

This example shows how to display the path cost for the VLANs on port 2/12:

Console> show spantree portvlancost 2/12

Port 2/12 VLANs 1-1005 have path cost 19.

Console> 

Related Commands

clear spantree portvlancost
set spantree portvlancost

show spantree statistics

To show spanning tree statistical information, use the show spantree statistics command.

show spantree statistics mod/port [vlan]

show spantree statistics mod/port mistp-instance [instance]

show spantree statistics mod/port mst [instance]

Syntax Description

mod/port	Number of the module and the port on the module.
vlan	(Optional) Number of the VLAN; valid values are from 1 to 1001 and from 1025 to 4094.
mistp-instance instance	Keyword and optional variable to display MISTP instance-specific information; valid values are from 1 to 16.
mst instance	Keyword and optional variable to display MST instance-specific information; valid values are from 0 to 15.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display statistical information:

Console> (enable) show spantree statistics 1/2 1005

SpanningTree enabled for vlanNo = 1005

                BPDU-related parameters

port spanning tree                   enabled

state                                disabled

port_id                              0xcccf

port number                          0x7eb

path cost                            80

message age (port/VLAN)              0(10)

designated_root                      00-10-2f-52-eb-ec

designated_cost                      0

designated_bridge                    00-10-2f-52-eb-ec

designated_port                      0xcccf

top_change_ack                       FALSE

config_pending                       FALSE

                PORT based information & statistics

config bpdu's xmitted (port/VLAN)    0(0)

config bpdu's received (port/VLAN)   0(0)

tcn bpdu's xmitted (port/VLAN)       0(0)

tcn bpdu's received (port/VLAN)      0(0)

forward trans count                  0

                Status of Port Timers

forward delay timer                  INACTIVE

forward delay timer value            0

message age timer                    INACTIVE

message age timer value              0

topology change timer                INACTIVE

topology change timer value          0

hold timer                           INACTIVE

hold timer value                     0

delay root port timer                INACTIVE

delay root port timer value          0

                VLAN based information & statistics

spanningtree type                    ibm

spanningtree multicast address       c0-00-00-00-01-00

bridge ID priority                             32768 (bridge priority: 32768, sys ID ext: 
64)

bridge mac address                   00-10-2f-52-eb-ec

bridge hello time                    2 sec

bridge forward delay                 4 sec

topology change initiator:           1/0

topology change                      FALSE

topology change time                 14

topology change detected             FALSE

topology change count                0

                Other port-specific info

dynamic max age transitions          0

port bpdu ok count                   0

msg age expiry count                 0

link loading                         1

bpdu in processing                   FALSE

num of similar bpdus to process      0

next state                           0

src mac count:                       0

total src mac count                  0

curr_src_mac                         00-00-00-00-00-00

next_src_mac                         00-00-00-00-00-00

channel_src_mac                      00-00-00-00-00-00

channel src count                    0

channel ok count                     0

Console> (enable)

This example shows how to display instance-specific information:

Console> (enable) show spantree statistics 2 mistp-instance 2

Port  2/1   Instance 2

SpanningTree enabled for instance = 2

                BPDU-related parameters

port spanning tree                   enabled

state                                forwarding

port_id                              0x8041

port number                          0x41

path cost                            20000

message age (port/inst)              1(20)

designated_root                      00-50-3e-8f-8c-00

designated_cost                      0

designated_bridge                    00-50-3e-8f-8c-00

designated_port                      0x8001

top_change_ack                       FALSE

config_pending                       FALSE

port_inconsistency                   none

                PORT based information & statistics

config bpdu's xmitted (port/inst)    0(0)

config bpdu's received (port/inst)   102(490)

tcn bpdu's xmitted (port/inst)       0(0)

tcn bpdu's received (port/inst)      0(0)

forward trans count                  0

scp failure count                    0

                Status of Port Timers

forward delay timer                  INACTIVE

forward delay timer value            15

message age timer                    ACTIVE

message age timer value              1

topology change timer                INACTIVE

topology change timer value          0

hold timer                           INACTIVE

hold timer value                     0

delay root port timer                INACTIVE

delay root port timer value          0

delay root port timer restarted is   FALSE

                Instance based information & statistics

spanningtree type                    ieee

spanningtree multicast address       01-80-c2-00-00-00

bridge priority                      32770

bridge mac address                   00-d0-00-b3-68-00

bridge hello time                    2 sec

bridge forward delay                 15(15) sec

topology change initiator:          15/63

last topology change occured:       Sun Jun 7 2000, 09:00:03

topology change                      FALSE

topology change time                 35

topology change detected             FALSE

topology change count                0

topology change last recvd. from     00-00-00-00-00-00

                Other port-specific info

dynamic max age transitions          0

port bpdu ok count                   0

msg age expiry count                 0

link loading                         1

bpdu in processing                   FALSE

num of similar bpdus to process      0

received_inferior_bpdu              FALSE

next state                           3

src mac count:                      0

total src mac count                  0

curr_src_mac                         00-00-00-00-00-00

next_src_mac                         00-00-00-00-00-00

channel_src_mac                      00-00-00-00-00-00

channel src count                    0

channel ok count                     0

Console> 

This example shows how to display MST instance-specific information:

Console> show spantree statistics 8/1 mst 0 

Port  8/1   Instance 0 

SpanningTree enabled for instance = 0 

                BPDU-related parameters 

port spanning tree                   enabled 

state                                forwarding 

port_id                              0x81c1 

port number                          0x1c1 

path cost                            20000 

message age (port/VLAN)              0(20) 

designated_root                      00-04-9b-ba-48-00 

designated_cost                      33920 

designated_bridge                    00-10-7b-bb-2f-00 

designated_port                      0x81c1 

top_change_ack                       FALSE 

config_pending                       FALSE 

port_inconsistency                   none 

                PORT based information & statistics 

config bpdu's xmitted (port/inst)    101(212) 

config bpdu's received (port/inst)   101(205) 

tcn bpdu's xmitted (port/inst)       0(1) 

tcn bpdu's received (port/inst)      0(2) 

forward trans count                  0 

scp failure count                    0 

root inc trans count (port/inst)     0(0) 

inhibit loopguard                    FALSE 

loop inc trans count (port/inst)     0(0) 

                Status of Port Timers 

forward delay timer                  INACTIVE 

forward delay timer value            0 

message age timer                    INACTIVE 

message age timer value              0 

topology change timer                INACTIVE 

topology change timer value          0 

hold timer                           INACTIVE 

hold timer value                     0 

delay root port timer                INACTIVE 

delay root port timer value          0 

delay root port timer restarted is   FALSE 

                Vlan based information & statistics 

spanningtree type                    ieee 

spanningtree multicast address       01-80-c2-00-00-00 

bridge priority                      32768 

bridge mac address                   00-10-7b-bb-2f-00 

bridge hello time                    2 sec 

bridge forward delay                 15(15) sec 

topology change initiator:          1/0 

last topology change occured:       Fri Sep 7 2001, 09:52:22 

topology change                      FALSE 

topology change time                 35 

topology change detected             FALSE 

topology change count                3 

topology change last recvd. from     00-00-00-00-00-00 

                Other port-specific info 

dynamic max age transitions          0 

port bpdu ok count                   0 

msg age expiry count                 0 

link loading                         0 

bpdu in processing                   FALSE 

num of similar bpdus to process      0 

received_inferior_bpdu               FALSE 

next state                           3 

src mac count:                      0 

total src mac count                  0 

curr_src_mac                         00-00-00-00-00-00 

next_src_mac                         00-00-00-00-00-00 

channel_src_mac                      00-00-00-00-00-00 

channel src count                    0 

channel ok count                     0 

Console>

Table 2-90 describes the possible fields in the show spantree statistics command output.

Table 2-90 show spantree statistics Command Output Fields 

Field	Description
BPDU-related parameters
port spanning tree	Status of whether Spanning Tree Protocol is enabled or disabled on the port.
state	Spanning tree port state (disabled, listening, learning, forwarding, or blocking).
port_id	Port identifier of the associated port.
port number	Port number.
path cost	Contribution of the path through this root port. This applies to the total path cost to the root for this bridge.
message age (port/VLAN)	Age of the received protocol information recorded for a port and the value of the Max Age parameter (shown in parentheses) recorded by the switch.
designated_root	MAC address of the designated spanning tree root bridge.
designated_cost	Cost of the path to the root offered by the designated port on the LAN to which this port is attached.
designated_bridge	Bridge identifier of the bridge assumed to be the designated bridge for the LAN associated with the port.
designated_port	Port identifier of the bridge port assumed to be the designated port for the LAN associated with the port.
top_change_ack	Value of the Topology Change Acknowledgement flag in the next configured BPDU to be transmitted on the associated port. The flag is set in reply to a Topology Change Notification BPDU.
config_pending	Boolean parameter set to record that a configured BPDU should be transmitted on expiration of the hold timer for the associated port.
port_inconsistency	Status of whether the port is in an inconsistent (PVID or port type) state or not.
PORT-based information and statistics
config bpdu's xmitted (port/VLAN)	Number of BPDUs transmitted from the port. The number in parentheses is the number of configured BPDUs transmitted by the switch for this instance of spanning tree.
config bpdu's received (port/VLAN)	Number of BPDUs received by this port. The number in parentheses is the number of configured BPDUs received by the switch for this instance of spanning tree.
tcn bpdu's xmitted (port/VLAN)	Number of TCN BDPUs transmitted on this port.
tcn bpdu's received (port/VLAN)	Number of TCN BPDUs received on this port.
forward trans count	Number of times the port state transitioned to FORWARDing state.
scp failure count	Number of SCP failures.
Status of Port Timers
forward delay timer	Status of the forward delay timer. This timer monitors the time spent by a port in the listening and learning states.
forward delay timer value	Current value of the forward delay timer.
message age timer	Status of the message age timer. This timer measures the age of the received protocol information recorded for a port.
message age timer value	Current value of the message age timer.
topology change timer	Status of the topology change timer. This timer determines the time period in which configured BPDUs are transmitted with the topology change flag set by the bridge when it is the root following the detection of a topology change.
topology change timer value	Current value of the topology change timer.
hold timer	Status of the hold timer. This timer ensures that configured BPDUs are not transmitted too frequently through any bridge port.
hold timer value	Current value of the hold timer.
delay root port timer	Status of the delay root port timer. This timer enables fast convergence on linkup when the UplinkFast feature is enabled.
delay root port timer value	Current value of the delay root port timer.
VLAN-based information and statistics
spanningtree type	Type of spanning tree (IEEE, IBM, CISCO).
spanningtree multicast address	Destination address used to send out configured BPDUs on a bridge port.
bridge ID priority	Part of the bridge identifier and is taken as the most significant part bridge ID comparisons.
bridge mac address	Bridge MAC address.
bridge hello time	Value of the Hello Time parameter when the bridge is the root or is attempting to become the root.
bridge forward delay	Value of the Forward Delay parameter when the bridge is the root or is attempting to become the root.
topology change initiator:	Number of the port that caused the topology change.
topology change	Boolean parameter set to record the value of the topology change flag in config BPDUs to be transmitted by the bridge on LANs for which the bridge is the designated bridge.
topology change time	Time period for which BPDUs are transmitted with the topology change flag set by the bridge when it is the root following the detection of a topology change. It is equal to the sum of the bridge's Max Age and Forward Delay parameters.
topology change detected	Boolean parameter set to TRUE when a topology change has been detected by or notified to the bridge.
topology change count	Number of times the topology change has occurred.
topology change last recvd. from	MAC address of the bridge that transmitted the last TCN BPDU.
Other port-specific info
dynamic max age transitions	Number of dynamic max age transitions.
port bpdu ok count	Number of reported port BPDU counts.
msg age expiry count	Number of message age expires.
link loading	Status of whether the link is oversubscribed.
bpdu in processing	Status of whether the BPDU is under processing.
num of similar bpdus to process	Number of similar BPDUs to process that are received on a specific port.
received_inferior_bpdu	Status of whether the port received an inferior BPDU or in response to an RLQ BPDU.
next state	Port state before it is actually set by spanning tree, to faciliate other tasks in using the new value.
src mac count:	Number of BPDUs with the same source MAC address.
total src mac count	Number of BPDUs with all the source MAC addresses.
curr_src_mac	Source MAC address of the configured BPDU received on a particular port. It should always be set to NULL for the Catalyst 6500 series switches.
next_src_mac	MAC address from the different source. It should always be set to NULL for the Catalyst 6500 series switches.
channel_src_mac	Source MAC address of the channel port. It is used to detect channel misconfiguration and avoid spanning tree loops.
channel src count	Number of times channel_src_mac gets changed and if the limit is exceeded, a channel misconfiguration is detected.
channel ok count	Number of times the channel ok condition was detected.

Related Commands

clear spantree statistics
show spantree

show spantree summary

To display a summary of spanning tree information, use the show spantree summary command.

show spantree summary [novlan]

show spantree summary {mistp-instance | mst} [noinstance]

Syntax Description

novlan	(Optional) Displays non-VLAN-specific information only.
mistp-instance	Displays MISTP instance-specific information only.
mst	Displays MST instance-specific information only.
noinstance	(Optional) Displays non-instance-specific information only.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

If the switch is not the root for any VLANs, "none" is displayed in the "Root switch for vlans" field.

Examples

This example shows how to display a summary of spanning tree information:

Console> show spantree summary

Spanning tree mode: RAPID-PVST+

MAC address reduction: enabled

Root switch for vlans: none.

Global loopguard is disabled on the switch.

Global portfast is disabled on the switch.

BPDU skewing detection disabled for the bridge.

BPDU skewed for vlans:  none.

Portfast bpdu-guard disabled for bridge.

Portfast bpdu-filter disabled for bridge.

Uplinkfast disabled for bridge.

Backbonefast disabled for bridge.

Summary of connected spanning tree ports by vlan

VLAN  Blocking Listening Learning Forwarding STP Active

----- -------- --------- -------- ---------- ----------

   1         0         0        0          2          2

      Blocking Listening Learning Forwarding STP Active

----- -------- --------- -------- ---------- ----------

Total        0         0        0          2          2

Console>

This example shows how to display non-VLAN-specific information only:

Console> show spantree summary novlan

Spanning tree mode: RAPID-PVST+

MAC address reduction: enabled

Root switch for vlans: none.

Global loopguard is disabled on the switch.

Global portfast is disabled on the switch.

BPDU skewing detection disabled for the bridge.

BPDU skewed for vlans:  none.

Portfast bpdu-guard disabled for bridge.

Portfast bpdu-filter disabled for bridge.

Uplinkfast disabled for bridge.

Backbonefast disabled for bridge.

      Blocking Listening Learning Forwarding STP Active

----- -------- --------- -------- ---------- ----------

Total        0         0        0          2          2

Console>

This example shows how to display a summary of spanning tree instance information:

Console> show spantree summary mistp-instance

MAC address reduction:disabled

Root switch for vlans:1-8,10-500,911.

BPDU skewing detection enabled for the bridge

BPDU skewed for vlans:1-8,10-500,911.

Portfast bpdu-guard disabled for bridge.

Portfast bpdu-filter disabled for bridge.

Uplinkfast disabled for bridge.

Backbonefast disabled for bridge.

Summary of connected spanning tree ports by mistp-instance

Inst  Blocking Listening Learning Forwarding STP Active

----- -------- --------- -------- ---------- ----------

   1         0         0        0          8          0

   2         4         0        0          4          8

   3         4         0        0          4          8

   4         4         0        0          4          8

   5         4         0        0          4          8

   6         4         0        0          4          8

   7         4         0        0          4          8

   8         4         0        0          4          8

   9         4         0        0          4          8

  10         4         0        0          4          8

  11         4         0        0          4          8

  12         4         0        0          4          8

  13         4         0        0          4          8

  14         4         0        0          4          8

  15         4         0        0          4          8

  16         0         0        0          0          0

      Blocking Listening Learning Forwarding STP Active

----- -------- --------- -------- ---------- ----------

Total       56         0        0         64        112

Console> 

This example shows how to display a summary of spanning tree MST instance information:

Console> show spantree summary mst 

MAC address reduction:disabled 

Root switch for MST instances:none. 

Global loopguard is disabled on the switch. 

Global portfast is disabled on the switch. 

BPDU skewing detection enabled for the bridge. 

BPDU skewed for MST instances: none. 

Portfast bpdu-guard disabled for bridge. 

Portfast bpdu-filter disabled for bridge. 

Summary of connected spanning tree ports by MST instances 

Inst  Blocking Listening Learning Forwarding STP Active 

----- -------- --------- -------- ---------- ---------- 

   0         0         0        0          3          3 

   1         0         0        0          0          0 

   2         0         0        0          0          0 

   3         0         0        0          0          0 

   4         0         0        0          0          0 

   5         0         0        0          0          0 

   6         0         0        0          0          0 

   7         0         0        0          0          0 

   8         0         0        0          0          0 

   9         0         0        0          0          0 

  10         0         0        0          0          0 

  11         0         0        0          0          0 

  12         0         0        0          0          0 

  13         0         0        0          0          0 

  14         0         0        0          0          0 

  15         0         0        0          0          0 

      Blocking Listening Learning Forwarding STP Active 

----- -------- --------- -------- ---------- ---------- 

Total        0         0        0          3          3 

Console>

This example shows how to display a summary of spanning tree noninstance-specific MST information:

Console> show spantree summary mst noinstance 

MAC address reduction:disabled 

Root switch for MST instances:none. 

Global loopguard is disabled on the switch. 

Global portfast is disabled on the switch. 

BPDU skewing detection enabled for the bridge. 

BPDU skewed for MST instances: none. 

Portfast bpdu-guard disabled for bridge. 

Portfast bpdu-filter disabled for bridge. 

      Blocking Listening Learning Forwarding STP Active 

----- -------- --------- -------- ---------- ---------- 

Total        0         0        0          3          3 

Console>

Related Commands

show spantree

show spantree uplinkfast

To show the UplinkFast feature settings, use the show spantree uplinkfast command.

show spantree uplinkfast [{mistp-instance [instances]} | vlans]

Syntax Description

mistp-instance instances	(Optional) Keyword and (optional) variable to display instance-specific information; valid values are from 1 to 16.
vlans	(Optional) Number of the VLAN; valid values are from 1 to 1005 and from 1025 to 4094.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

The mistp-instance instances keyword and optional variable are available in MISTP or MISTP/PVST+ mode only.

The vlans variable is available in PVST+ mode only.

You can enter a single VLAN or instance or a range of VLANs or instances separated by commas.

If you do not specify a VLAN or instance, all VLANs or instances are displayed.

This command is not available in MST mode.

Examples

This example shows how to display the UplinkFast feature settings for all VLANs:

Console> show spantree uplinkfast

Station update rate set to 15 packets/100ms.

uplinkfast all-protocols field set to off.

VLAN port list 	

------------------------------------------------

1-20   1/1(fwd),1/2-1/5

21-50  1/9(fwd), 1/6-1/8, 1/10-1/12

51-100 2/1(fwd), 2/12

Console> 

This example shows how to display the UplinkFast feature settings for a specific instance:

Console> show spantree uplinkfast mistp-instance 1

Station update rate set to 15 packets/100ms.

uplinkfast all-protocols field set to off.

Inst   port list 	

------------------------------------------------

1      4/1(fwd)

Console> 

This example shows how to display the UplinkFast feature settings when in Rapid PVST+ mode:

Console> show spantree uplinkfast

uplinkfast is enabled but inactive in Rapid-Pvst+ mode.

Console>

Related Commands

clear spantree uplinkfast
set spantree uplinkfast

show startup-config

To display the startup configuration file contained in NVRAM or specified by the CONFIG_FILE environment variable, use the show startup-config command.

show startup-config

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Privileged.

Usage Guidelines

To view specific information within the show startup-config output, if you enter /text and press the Return key at the --More-- prompt, the display starts two lines above the line containing the text string. If the text string is not found, "Pattern Not Found" is displayed. You can also enter "n" at the --More-- prompt to search for the last entered text string.

Examples

This example shows how to display the switch startup configuration:

Console> (enable) show startup-config

This command shows non-default configurations only.

Use 'show config all' to show both default and non-default configurations.

..............

..................

....................

..

begin

!

# ***** NON-DEFAULT CONFIGURATION *****

!

!

#time: Mon Jun 11 2001, 06:56:10

!

#version 6.3(0.56)PAN

!

!

#!

#vtp

set vtp domain dan

set vtp mode transparent

set vlan 1 name default type ethernet mtu 1500 said 100001 state active

set vlan 1002 name fddi-default type fddi mtu 1500 said 101002 state active

set vlan 1004 name fddinet-default type fddinet mtu 1500 said 101004 state acti

e stp ieee

set vlan 1005 name trnet-default type trbrf mtu 1500 said 101005 state active s

p ibm

set vlan 2,10-11

set vlan 1003 name token-ring-default type trcrf mtu 1500 said 101003 state act

ve mode srb aremaxhop 7 stemaxhop 7 backupcrf off

!

#ip

set interface sc0 1 172.20.52.19/255.255.255.224 172.20.52.31

set ip route 0.0.0.0/0.0.0.0         172.20.52.1

!

#set boot command

set boot config-register 0x10f

set boot system flash bootflash:cat6000-sup2-d.6-3-0-56-PAN.bin

set boot system flash bootflash:cat6000-sup2-d.6-3-0-54-PAN.bin

set boot system flash bootflash:cat6000-sup2-d.6-3-0-46-PAN.bin

set boot system flash bootflash:cat6000-sup2-d.6-3-0-44-PAN.bin

set boot system flash bootflash:

!

#qos

set qos wred 1p2q2t tx queue 1 60:80 80:100

set qos wred 1p2q2t tx queue 2 60:80 80:100

set qos wred 1p3q1t tx queue 1 80:100

set qos wred 1p3q1t tx queue 2 80:100

set qos wred 1p3q1t tx queue 3 80:100

!

#mmls nonrpf

set mmls nonrpf timer 0

!

#security ACLs

clear security acl all

#pbf set

set pbf mac 00-01-64-61-39-c3

#adj set

set security acl adjacency ADJ2 10 00-00-00-00-00-0a 00-00-00-00-00-0b mtu 9600

#

commit security acl all

!

# default port status is enable

!

!

#module 1 empty

!

#module 2 : 2-port 1000BaseX Supervisor

!

#module 3 : 48-port 10/100BaseTX Ethernet

set vlan 10   3/1

set vlan 11   3/2

!

#module 4 empty

!

#module 5 : 0-port Switch Fabric Module

!

#module 6 empty

!

#module 7 empty

!

#module 8 empty

!

#module 9 empty

!

#module 15 empty

!

#module 16 empty

end

Console> (enable)

Related Commands

show running-config

show summertime

To display the current status of the summertime feature, use the show summertime command.

show summertime

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display the current status of the summertime feature:

Console> show summertime

Summertime is disabled and set to ''

Start : Thu Apr 13 2000, 04:30:00

End   : Mon Jan 21 2002, 05:30:00

Offset: 1440 minutes (1 day)

Recurring: no   

Console> 

Related Commands

set summertime

show system

To display system information, use the show system command.

show system

Syntax Description

This command has no keywords or arguments.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

The switching bus traffic values displayed apply to a single bus.

Examples

This example shows how to display system information:

Console> show system

PS1-Status PS2-Status

---------- ----------

none       ok

Fan-Status Temp-Alarm Sys-Status Uptime d,h:m:s Logout

---------- ---------- ---------- -------------- ---------

ok         off        ok         1,22:38:21     20 min

PS1-Type             PS2-Type

-------------------- --------------------

none                 WS-CAC-1300W        

Modem   Baud  Traffic Peak Peak-Time

------- ----- ------- ---- -------------------------

disable  9600   0%      0% Mon Jan 10 2000, 15:23:31

PS1 Capacity: 1153.32 Watts (27.46 Amps @42V)

System Name              System Location          System Contact           CC

------------------------ ------------------------ ------------------------ ---

Information Systems      Closet 230 4/F           Xena ext. 24

No active fabric module in the system.

Core Dump                Core File

------------------------  -----------------------

enabled                     bootflash:crashinfo

Syslog Dump              Syslog File

------------------------ -----------------------     

enabled                     bootflash:sysloginfo

Console> 

This example shows how to display system information on a system configured with the Supervisor Engine 2 with Layer 3 Switching Engine II (PFC2):

Console> show system

Console> (enable) show system

PS1-Status PS2-Status

---------- ----------

ok         none

Fan-Status Temp-Alarm Sys-Status Uptime d,h:m:s Logout

---------- ---------- ---------- -------------- ---------

ok         off        ok         5,22:12:33     20 min

PS1-Type             PS2-Type

-------------------- --------------------

WS-CAC-1300W         none

Modem   Baud  Backplane-Traffic Peak Peak-Time

------- ----- ----------------- ---- -------------------------

disable  9600   0%                0% Tue Mar 5 2002, 11:44:07

PS1 Capacity: 1153.32 Watts (27.46 Amps @42V)

System Name              System Location          System Contact           CC

------------------------ ------------------------ ------------------------ ---

Fab Chan Input Output

-------- ----- ------

       0    0%     0%

       1    0%     0%

       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%

Core Dump                Core File

------------------------ -----------------------

disabled                 slot0:crashinfo

Syslog Dump              Syslog File

------------------------ -----------------------     

enabled                     bootflash:sysloginfo

Console>

Table 2-91 describes the fields in the show system command output.

Table 2-91 show system Command Output Fields 

Field	Description
PS1-Status	Status of power supply 1 (ok, fan failed, faulty, or none).
PS2-Status	Status of power supply 2 (ok, fan failed, faulty, or none).
Fan-Status	Status of the fan (ok, faulty, or other).
Temp-Alarm	Status of whether the temperature alarm is off or on.
Sys-Status	System status (ok or faulty). Corresponds to system LED status.
Uptime d, h:m:s	Amount of time in days, hours, minutes, and seconds, that the system has been up and running.
Logout	Amount of time after which an idle session is disconnected.
PS1-Type	Part number of the power supply.
PS2-Type	Part number of the redundant power supply, if present.
Modem	Status of the modem status (enable or disable).
Baud	Baud rate to which the modem is set.
Traffic	Current traffic percentage.
Peak	Peak percentage of traffic on the backplane.
Peak-Time	Time stamp when peak percentage was recorded.
PS1 Capacity	Power supply 1 maximum capacity.
PS2 Capacity	Power supply 2 maximum capacity.
PS Configuration	Power supply configuration.
System Name	System name.
System Location	System location.
System Contact	System contact information.
CC	Country code string.
Core Dump	Status of the core dump feature (enable or disable).
Core File	Flash file device and core dump file name.
Syslog Dump	Status of the syslog dump feature (enable or disable).
Syslog File	Flash file device and syslog dump file name.
Backplane-Traffic	Current traffic percentage.
Fabric Chan	Number of the fabric channel.
Input	Percentage of fabric channel utilization for input.
Output	Percentage of fabric channel utilization for output.

Related Commands

set system baud
set system contact
set system core-dump
set system core-file
set system countrycode
set system location
set system modem
set system name
set system syslog-dump
set system syslog-file

show system highavailability

To display the system high-availability configuration settings, use the show system highavailability command.

show system highavailability

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display the system high-availability configuration settings:

Console> (enable) show system highavailability

Highavailability:disabled

Highavailability versioning:disabled

Highavailability Operational-status:OFF(high-availability-not-enabled)

Console> (enable)

Related Commands

set system highavailability
set system highavailability versioning

show system supervisor-update

To display the Erasable Programmable Logic Device (EPLD) upgrade process configuration, use the show system supervisor-update command.

show system supervisor-update

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display the EPLD upgrade configuration:

Console> show system supervisor-update

Supervisor EPLD update: disabled

Console>

Related Commands

set system supervisor-update

show system switchmode

To display the system switching mode setting, use the show system switchmode command.

show system switchmode

Syntax Description

This command has no arguments or keywords.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display the system switching mode:

Console> show system switchmode

Switching-mode allow:truncated

Switching-mode threshold:2

Console> 

Related Commands

set system switchmode allow

show tacacs

To display the TACACS+ protocol configuration, use the show tacacs command.

show tacacs [noalias]

Syntax Description

noalias

(Optional) Forces the display to show IP addresses, not IP aliases.

Defaults

This command has no default settings.

Command Types

Switch command.

Command Modes

Normal.

Examples

This example shows how to display the TACACS+ protocol configuration:

Console> show tacacs

Login Authentication: Console Session   Telnet Session

---------------------  ----------------  ----------------

tacacs                 disabled          disabled        

local                  enabled(primary)  enabled(primary)

Enable Authentication:Console Session   Telnet Session

---------------------- ----------------- ----------------

tacacs                 disabled          disabled        

local                  enabled(primary)  enabled(primary)

Tacacs login attempts:3

Tacacs timeout:5 seconds

Tacacs direct request:disabled

Tacacs-Server                              Status

----------------------------------------   -------

171.69.193.114                             primary

Console>

Table 2-92 describes the fields in the show tacacs command output.

Table 2-92 show tacacs Command Output Fields 

Field	Description
Login authentication	Display of the login authentication types.
Console Session	Status of whether the console session is enabled or disabled.
Telnet Session	Status of whether the Telnet session is enabled or disabled.
Enable Authentication	Display of the enable authentication types.
Tacacs login attempts	Number of failed login attempts allowed.
Tacacs timeout	Time in seconds to wait for a response from the TACACS+ server.
Tacacs direct request	Status of whether TACACS+ directed-request option is enabled or disabled.
Tacacs-Server	IP addresses or IP aliases of configured TACACS+ servers.
Status	Primary TACACS+ server.

Related Commands

set tacacs attempts
set tacacs directedrequest
set tacacs key
set tacacs server
set tacacs timeout

show tech-support

To display system and configuration information you can provide to the Cisco Technical Assistance Center when reporting a problem, use the show tech-support command.

show tech-support [{module mod} | {port mod/port}] [vlan vlan] [mistp-instance instance]
[mst instance] [memory] [config]

Syntax Description

module mod	(Optional) Specifies the module number of the switch ports.
port mod/port	(Optional) Specifies the module and port number of the switch ports.
vlan vlan	(Optional) Specifies the VLAN; valid values are from 1 to 1001 and from 1025 to 4094.
mistp-instance instance	(Optional) Specifies the MISTP instance number; valid values are from 1 to 16.
mst instance	(Optional) Specifies the MST instance number; valid values are from 0 to 15.
memory	(Optional) Displays memory and processor state data.
config	(Optional) Displays switch configuration.

Defaults

By default, this command displays the output for technical-support-related show commands. Use keywords to specify the type of information to be displayed. If you do not specify any parameters, the system displays all configuration, memory, module, port, instance, and VLAN data.

Command Types

Switch command.

Command Modes

Normal.

Usage Guidelines

---

Caution Avoid running multiple show tech-support commands on a switch or multiple switches on the network segment. Doing so may cause spanning tree instability.

---

The show tech-support command may time out if the configuration file output takes longer to display than the configured session timeout time. If this happens, enter a set logout timeout value of 0 to disable automatic disconnection of idle sessions or enter a longer timeout value.

The show tech-support command output is continuous; it does not display one screen at a time. To interrupt the output, press Ctrl-C.

If you specify the config keyword, the show tech-support command displays the output of these commands:

•show config

•show flash

•show log

•show microcode

•show module

•show port

•show spantree active

•show spantree summary

•show system

•show test

•show trunk

•show version

•show vlan

---

Note If MISTP is running, the output from the show spantree mistp-instance active and show spantree summary mistp-instance commands are displayed instead of the output from the show spantree active and show spantree summary commands.

---

---

Note If MST is running, the output from the show spantree mst and show spantree summary mst commands are displayed instead of the output from the show spantree active and show spantree summary commands.

---

If you specify the memory keyword, the show tech-support command displays the output of these commands:

•ps

•ps -c

•show cam static

•show cam system

•show flash

•show memory buffers

•show microcode

•show module

•show proc

•show proc mem

•show proc cpu

•show system

•show spantree active

•show version

If you specify a module, port, or VLAN number, the system displays general system information and information for the component you specified.

Related Commands

See the commands listed in the "Usage Guidelines" section.