Cisco 4500M Command Reference Manual page 417

Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches
Number of topology changes 0 last change occurred 18:13:54 ago
Times:
Timers: hello 0, topology change 0, notification 0
Port 265 (FastEthernet5/9) of VLAN1 is forwarding
Port path cost 19, Port priority 128, Port Identifier 129.9.
Designated root has priority 16384, address 0060.704c.7000
Designated bridge has priority 32768, address 00e0.4fac.b000
Designated port id is 128.2, designated path cost 19
Timers: message age 3, forward delay 0, hold 0
Number of transitions to forwarding state: 1
BPDU: sent 3, received 32852
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Switch#
This example shows how to display spanning tree BackboneFast status:
Switch# show spanning-tree backbonefast
BackboneFast is enabled
BackboneFast statistics
-----------------------
Number of transition via backboneFast (all VLANs) : 0
Number of inferior BPDUs received (all VLANs)
Number of RLQ request PDUs received (all VLANs)
Number of RLQ response PDUs received (all VLANs)
Number of RLQ request PDUs sent (all VLANs)
Number of RLQ response PDUs sent (all VLANs)
Switch#
This example shows how to display spanning tree information for the bridge:
Switch# show spanning-tree bridge
VLAN1
Bridge ID
VLAN2
Bridge ID
VLAN3
Bridge ID
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Switch#
This example shows how to display a summary of interface information:
Switch# show spanning-tree
VLAN1
Spanning tree enabled protocol ieee
Root ID
Bridge ID
78-16201-01
hold 1, topology change 24, notification 2
hello 2, max age 14, forward delay 10
Priority 32768
Address 0050.3e8d.6401
Hello Time 2 sec
Priority 32768
Address 0050.3e8d.6402
Hello Time 2 sec
Priority 32768
Address 0050.3e8d.6403
Hello Time 2 sec
Priority 32768
Address 0030.94fc.0a00
This bridge is the root
Hello Time 2 sec
Priority 32768
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
: 0
: 0
: 0
: 0
: 0
Max Age 20 sec Forward Delay 15 sec
Max Age 20 sec Forward Delay 15 sec
Max Age 20 sec Forward Delay 15 sec
Max Age 20 sec Forward Delay 15 sec
show spanning-tree
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