The following is an example of the CLI commands:

console> enable

console# configure

Console(config)# interface ethernet 1/e1

Console(config-if)# spanning-tree disable

Console(config-if)# spanning-tree cost 35000

Console(config-if)# spanning-tree port-priority 96

Console(config-if)# spanning-tree portfast

Console(config-if)# exit

Console(config)# exit

Console# show spanning-tree ethernet 1/e15

Port 1/e15 enabled

State: forwarding

Role: designated

Port id: 128.15

Port cost: 19

Type: P2p (configured: Auto) Internal Port Fast: No (configured: No)

Designated bridge Priority : 32768

Address: 00:00:00:16:00:64

Designated port id: 128.15

Designated path cost: 4

Guard root: Disabled

 

Number of transitions to forwarding state: 2

BPDU: sent 483, received 1037

 

console# show spanning-tree ethernet 1/e15 instance 12

Port 1/e15 enabled

 

State: discarding

Role: alternate

Port id: 128.15

Port cost: 19

Type: P2p (configured: Auto) Internal Port Fast: No (configured:

No)

 

Designated bridge Priority : 32768

Address: 00:00:b0:07:07:49

Designated port id: 128.11

Designated path cost: 0

Guard root: Disabled

Number of transitions to forwarding state: 3

BPDU: sent 482, received 1035

Configuring Switch Information

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Dell 3548 manual Console# show spanning-tree ethernet 1/e15 instance