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Catalyst 6500 Series Switch Command Reference—Release 8.4
OL-6244-01
Chapter 2 Catalyst 6500 Series Switch and ROM Monitor Commands
show spantree
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>