As the position of the TPID field in an Ethernet packet is the same as that of the upper-layer protocol type field in a packet without VLAN Tag, to avoid confusion in the process of receiving/forwarding a packet, the TPID value cannot be any of the protocol type value listed in Table 1-1.

Table 1-1Commonly used protocol type values in Ethernet frames

Protocol type

Value

ARP

0x0806

 

 

IP

0x0800

 

 

MPLS

0x8847/0x8848

 

 

IPX

0x8137

 

 

IS-IS

0x8000

 

 

LACP

0x8809

 

 

802.1x

0x888E

 

 

VLAN-VPN Configuration

Configuration Task List

Complete the following tasks to configure VLAN-VPN:

Task

Remarks

Enabling the VLAN-VPN Feature for a Port

Required

 

 

TPID Adjusting Configuration

Optional

 

 

Enabling the VLAN-VPN Feature for a Port

Configuration Prerequisites

z

z

The port is not a VLAN-VPN uplink port.

The port is not a remote mirror reflection port.

Configuration procedure

Follow these steps to enable the VLAN-VPN feature for a port:

To do…

Use the command…

Remarks

Enter system view

system-view

 

 

 

Enter Ethernet port

interface interface-type

view

interface-number

 

 

 

 

Enable the VLAN-VPN

 

Required

vlan-vpn enable

By default, the VLAN-VPN feature is

feature on the port

 

disabled on a port.

 

 

 

 

 

1-3

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3Com WX3000 operation manual VLAN-VPN Configuration, Enabling the VLAN-VPN Feature for a Port, Protocol type Value