Cisco 4500M - Page 419

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Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
78-16201-01
Chapter2Cisco IOS Commands for the Catalyst 4500 Series Switches
show spanning-tree
This example shows how to display spanning tree information for a specific bridge group:
Switch# show spanning-tree vlan 1
UplinkFast is disabled
BackboneFast is disabled
This example shows how to display a summary of port states:
Switch# show spanning-tree summary
Root bridge for:VLAN1, VLAN2.
PortFast BPDU Guard is disabled
EtherChannel misconfiguration guard is enabled
UplinkFast is disabled
BackboneFast is disabled
Default pathcost method used is short
Name Blocking Listening Learning Forwarding STP Active
-------------------- -------- --------- -------- ---------- ----------
VLAN1 0 0 0 1 1
VLAN2 0 0 0 1 1
-------------------- -------- --------- -------- ---------- ----------
2 VLANs 0 0 0 2 2
Switch#
This example shows how to display the total lines of the spanning tree state section:
Switch# show spanning-tree summary totals
Root bridge for:VLAN1, VLAN2.
PortFast BPDU Guard is disabled
EtherChannel misconfiguration guard is enabled
UplinkFast is disabled
BackboneFast is disabled
Default pathcost method used is short
Name Blocking Listening Learning Forwarding STP Active
-------------------- -------- --------- -------- ---------- ----------
2 VLANs 0 0 0 2 2
Switch#
This example shows how to determine whether any ports are in root inconsistent state:
Switch# show spanning-tree inconsistentports
Name Interface Inconsistency
-------------------- -------------------- ------------------
VLAN1 FastEthernet3/1 Root Inconsistent
Number of inconsistent ports (segments) in the system:1
Switch#