3com 8807 Reference Guide

C

HAPTER

 15: BPDU T

UNNEL

 C

ONFIGURATION

 C

OMMANDS

None

Use the vlan-vpn tunnel command to enable bridge protocol data unit (BPDU) 
Tunnel on the switch.

Use the undo vlan-vpn tunnel command to disable BPDU Tunnel on the switch.

BPDU Tunnel enables geographically segmented user network to transmit BPDU 
packets transparently over the specified VLAN VPN on the operator’s network. This 
allows the user network to participate in a uniform spanning tree calculation while 
maintaining a separate spanning tree from the operator network.

By default, BPDU Tunnel is disabled.

c 

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To enable BPDU Tunnel on a switch, you must first enable STP on it. Otherwise, 
the client network BPDU will not be processed by the CPU when entering the 
switch, nor MAC address replacement or transparent transmission will be 
implemented.

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To enable BPDU Tunnel on a port, you must configure the port as access and 
the intermediate carrier network as trunk.

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You cannot enable BPDU Tunnel on a port on which DOT1X, GComware, STP 
or NTDP is enabled.

# Enable BPDU Tunnel on the switch.

<SW8800>system-view

 

System View: return to User View with Ctrl+Z.

 

[SW8800] vlan-vpn tunnel