Cisco Catalyst 3550

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Catalyst 3550 Multilayer Switch Command Reference
OL-8566-01
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
show spanning-tree
show spanning-tree
Use the show spanning-tree user EXEC command to display spanning-tree state information.
show spanning-tree [bridge-group | active [detail] | backbonefast | blockedports | bridge | detail
[active] | inconsistentports | interface interface-id | mst | pathcost method | root | summary
[totals] | uplinkfast | vlan vlan-id] [ | {begin | exclude | include} expression]
show spanning-tree bridge-group [active [detail] | blockedports | bridge | detail [active] |
inconsistentports | interface interface-id | root | summary] [| {begin | exclude | include}
expression]
show spanning-tree vlan vlan-id [active [detail] | blockedports | bridge | detail [active] |
inconsistentports | interface interface-id | root | summary] [ | {begin | exclude | include}
expression
show spanning-tree {vlan vlan-id | bridge-group} bridge [address | detail | forward-time |
hello-time | id | max-age | priority [system-id] | protocol] [ | {begin | exclude | include}
expression]
show spanning-tree {vlan vlan-id | bridge-group} root [address | cost | detail | forward-time |
hello-time | id | max-age | port | priority [system-id] [ | {begin | exclude | include}
expression]
show spanning-tree interface interface-id [active [detail] | cost | detail [active] | inconsistency |
portfast | priority | rootcost | state] [ | {begin | exclude | include} expression]
show spanning-tree mst [configuration [digest] | instance-id] [detail | interface interface-id
[detail]]
[ | {begin | exclude | include} expression]
Syntax Description bridge-group (Optional) Specify the bridge group number. The range is 1 to 255.
active [detail] (Optional) Display spanning-tree information only on active interfaces
(only available in privileged EXEC mode).
backbonefast (Optional) Display spanning-tree BackboneFast status.
blockedports (Optional) Display blocked port information (only available in privileged
EXEC mode).
bridge [address | detail |
forward-time | hello-time |
id | max-age | priority
[system-id] | protocol]
(Optional) Display status and configuration of this switch (optional
keywords only available in privileged EXEC mode).
detail [active] (Optional) Display a detailed summary of interface information (active
keyword only available in privileged EXEC mode).
inconsistentports (Optional) Display inconsistent port information (only available in
privileged EXEC mode).