GSWB

CHAPTER 8 CLI Operations

•Displays output of show spanning-tree statistics interface

#show spanning-tree statistics interface GigabitEthernet 0/1

Interface:

 

17 GigabitEthernet 0/1

 

changed to root port

1

changed to designated port

0

changed to forwarding state

1

message age timer timeout

0

port request enable

1

port request disable

0

Config BPDU:

 

sent

3

received

3417

discarded

0

TC flag ON Config BPDU received

0

TCN BPDU:

 

sent

3

received

3417

discarded

0

BPDU discarded by system error

0

Trigger for changing to root bridge:

 

message age timeout

0

port down

0

Trigger for changing to not root bridge:

new Config BPDU received

0

#

 

Interface statistical information

zInterface information:

The port number and interface name are displayed:

-The port number ranges from 1 to 33.

-Interface name

The interface name is displayed following selection from GigabitEthernet 0/1-8, IOU 0 0-7 1, TenGigabitEthernet 1/1-2, port-channel 1-7, and none.

If no port-channel port has been created or no TenGigabitEthernet is mounted, "none" is displayed for the interface name.

zchanged to root port: Root port count

The number of changes into the root port is displayed.

zchanged to designated port: Designated port count

The number of changes into the designated port is displayed.

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