L2Pt Configuration; L2Pt Overview; Command Configuration - Zte ZXR10 5900 Series User Manual

Command
ZXR10(config-gei_1/x)#
| disable}
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C h a p t e r

L2PT Configuration

Table of Contents

L2PT Overview ................................................................ 113

Command Configuration ................................................... 113

L2PT Configuration Example.............................................. 114
L2PT Overview
In the VPN mode of QinQ, if the VPN users in different locations
want to run their layer 2 protocol, core network need to transpar-
ently transmit these layer 2 protocol packets. These packets can't
be transparently transmitted, L2PT is used to transparently trans-
mit client network layer 2 protocol packet in QinQ VPN network
environment.
The fullname of L2PT is layer 2 protocol tunnel, which is a layer
2 protocol tunnel technology. The principle is that the receiving
layer 2 protocol packet is encapsulated by a multicast address on
tunnled port of edge switch, and then the encapsulated packet is
broadcast in vlan, these packets are de-encapsulated on the port
of remote switch that enables tunneled. In the end, transparent
transmission is implemented. Layer 2 protocol packet (STP), on
the port that doesn't enable L2PT, will not be transmitted in the
provider network, which will cause that the client network forms
several unconnected stp domain based on area border and the
client VPN network can't run a uniform STP topology. L2PT can
help user to meet the requirement by transparently transmitting
STP BPDU packet in VPN.
Command Configuration
To enable port or close L2PT tunnel, use the following command.
l2protocol-tunneled stp {enable
This command is configured in the interface mode. It is used to
enable or disable a certain port tunneled. STP field indicates layer
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Function
This enables/disables port
tunneled.
113