Use show spanning tree command to check the current STP mode. As you can see, RSTP-PVST+ is the default spanning tree mode on nexus switches.
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N7k (config-if-range)# show spanning-tree vlan 30
VLAN0030
Spanning tree enabled
protocol rstp ———<<<<<<<<<<<<<
Root ID Priority 32798
Address 0005.73bc.067c
This bridge is the
root
Hello Time 2
sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority
32798 (priority 32768 sys-id-ext 30)
Address 0005.73bc.067c
Hello Time 2
sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts
Cost Prio.Nbr Type
—————- —- — ——— ——–
——————————-
–
Eth1/1 Desg FWD
2 128.129 P2p
Eth1/2 Desg FWD
2 128.130 P2p |