Cisco Catalyst 4500 Series Command Reference Manual page 947

Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
Port path cost 19, Port priority 128, Port Identifier 129.79.
Designated root has priority 32768, address 0030.94fc.0a00
Designated bridge has priority 32768, address 0030.94fc.0a00
Designated port id is 129.79, designated path cost 0
Timers:message age 0, forward delay 0, hold 0
Number of transitions to forwarding state:1
BPDU:sent 6127, received 0
Switch#
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
Switch#
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
-------------------- -------- --------- -------- ---------- ----------
VLAN1
VLAN2
-------------------- -------- --------- -------- ---------- ----------
Switch#
This example shows how to display the total lines of the spanning-tree state section:
Switch#
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
-------------------- -------- --------- -------- ---------- ----------
Switch#
This example shows how to determine whether any ports are in root inconsistent state:
Switch#
Name
-------------------- -------------------- ------------------
VLAN1
Number of inconsistent ports (segments) in the system:1
Switch#
OL-25342 -01
Blocking Listening Learning Forwarding STP Active
0
0
2 VLANs 0 0
show spanning-tree summary totals
Blocking Listening Learning Forwarding STP Active
2 VLANs 0 0
show spanning-tree inconsistentports
Interface
FastEthernet3/1
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0SG and IOS 15.1(1)SG)
0 0 1
0 0 1
0 2
0 2
Inconsistency
Root Inconsistent
show spanning-tree
1
1
2
2
2-889