| Exam 200-301 | Question id=5341 | Network Access |
What command would you run to determine which switch is the root bridge for a particular VLAN?
| A. |
show spantree vlan | |
| B. |
show spanning tree | |
| C. |
show vlan spantree | |
| D. |
show spanning-tree vlan | |
| E. |
show spanning-tree interface |
The show spanning-tree vlan command provides Spanning Tree Protocol (STP) information on the root switch, including the bridge ID, root path, and root cost, as well as information on the local switch. The output of the command is as follows:
Switch#show spanning-tree vlan 10
VLAN0010
Spanning tree enabled protocol rstp
Root ID Priority 24586
Address 0015.63f6.b700
Cost 19
Port 107 (FastEthernet3/0/1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32778 (priority 32768 sys-id-ext 10)
Address 000f.f794.3d00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
--------- ---- --- ---- -------- ----
Fa3/0/1 Root FWD 19 128.107 P2p
Fa3/0/2 Altn BLK 19 128.108 P2p
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