cisco switches are basically computers with their own os that has an interactive cli (terminal, bash)
this is how to show the switch_id, the switch with the lowest switch_id is the root bridge-switch.
Switch>enable Switch#show spa Switch#show spanning-tree VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 32769 Address 0001.965B.3C43 This bridge is the root Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0001.965B.3C43 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 20 Interface Role Sts Cost Prio.Nbr Type ---------------- ---- --- --------- -------- -------------------------------- Gi0/1 Desg FWD 4 128.25 P2p Gi0/2 Desg FWD 4 128.26 P2p # how to enable cisco's implementation of advanced STP protocol? Switch> enable Switch# configure terminal Switch(config)# spanning-tree mode rapid-pvst Switch(config)# end Switch# copy running-config startup-config # just press enter to start the copy process Destination filename [startup-config]? Building configuration... [OK]
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