Deployment Guide

66 Leaf-Spine Deployment and Best Practices Guide | Version 1.0
10.3.3 show spanning-tree
This command validates spanning tree is enabled on all VLANs on the Nexus spine switches and all
interfaces are forwarding (Sts column shows FWD). One of the spine switches (L2-Spine1-Nexus7K in this
example) is the root bridge on all VLANs.
L2-Spine1-Nexus7K# show spanning-tree
VLAN0001
Spanning tree enabled protocol rstp
Root ID Priority 1
Address 8478.ac11.e341
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 1 (priority 0 sys-id-ext 1)
Address 8478.ac11.e341
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Po1 Desg FWD 1 128.4096 (vPC) P2p
Po2 Desg FWD 1 128.4097 (vPC) P2p
Po20 Desg FWD 1 128.4115 (vPC peer-link) Network P2p
VLAN0010
Spanning tree enabled protocol rstp
Root ID Priority 10
Address 8478.ac11.e341
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 10 (priority 0 sys-id-ext 10)
Address 8478.ac11.e341
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Po1 Desg FWD 1 128.4096 (vPC) P2p
Po2 Desg FWD 1 128.4097 (vPC) P2p
Po20 Desg FWD 1 128.4115 (vPC peer-link) Network P2p
VLAN0020
Spanning tree enabled protocol rstp
Root ID Priority 20