3Com WX1200 3CRWX120695A WX1200# set vlan 10 name backbone port, WX1200# display vlan Config

366CHAPTER 17: CONFIGURING AND MANAGING SPANNING TREE PROTOCOL

7	up	down	auto	network	10/100BaseTx
8	up	down	auto	network	10/100BaseTx

2Configure a backbone VLAN and verify the configuration change. Type the following commands:

WX1200# set vlan 10 name backbone port 1-2
success: change accepted.
WX1200# display vlan		config	VLAN	Tunl		Port
VLAN	Name	Admin			Tag
		Status	State Affin Port			State
----	---------------	------	----- ----- ---------------		-----	-----
1	default	Up	Up	5	none	Up
10	backbone	Up	Down	1
				5	none	Down
				1
4094	web-aaa	Up	Up	2	none	Down
				0	4094 Up
				2

3Enable STP on the backbone VLAN and verify the change. Type the following commands:

WX1200# set spantree enable vlan backbone success: change accepted.

WX1200# display spantree vlan 10

VLAN	10			PVST+
Spanning tree mode
Spanning tree type				IEEE
Spanning tree enabled
Designated Root				00-0b-0e-00-04-0c
Designated Root Priority				32768
Designated Root Path Cost				0
We are the root		20 sec	Hello Time 2 sec		Forward Delay	15 sec
Root Max Age
Bridge ID MAC ADDR				00-0b-0e-00-04-0c
Bridge ID Priority				32768	Forward Delay	15 sec
Bridge Max Age 20 sec			Hello Time 2 sec
Port		Vlan		STP-State	Cost Prio	Portfast

--------------------------------------------------------------------

1	10	Disabled	4	128	Disabled
2	10	Disabled	4	128	Disabled