Manual

Layer 2 Tunnel Protocol Version 3

Configuration Examples for Layer 2 Tunnel Protocol Version 3

Cisco IOS Releases 12.0(29)S and 12.2(25)S

interface Serial0/0

encapsulation frame-relay

frame-relay intf-type dce

service-policy output dlci

connect one Serial0/0 100 l2transport

xconnect 10.0.3.201 555 encapsulation l2tpv3 pw-class mqc

connect two Serial0/0 200 l2transport

xconnect 10.0.3.201 666 encapsulation l2tpv3 pw-class mqc

Configuring a Static L2TPv3 Session for an Xconnect Ethernet Interface

Example

L2TPv3 is the only encapsulation method that supports a manually provisioned session setup. This

example shows how to configure a static session configuration in which all control channel parameters

are set up in advance. There is no control plane used and no negotiation phase to set up the control

channel. The PE router starts sending tunneled traffic as soon as the Ethernet interface (int e0/0) comes

up. The virtual circuit identifier, 123, is not used. The PE sends L2TP data packets with session ID 111

and cookie 12345. In turn, the PE expects to receive L2TP data packets with session ID 222 and cookie

54321.

l2tp-class l2tp-defaults

retransmit initial retries 30

cookie-size 8

pseudowire-class ether-pw

encapsulation l2tpv3

protocol none

ip local interface Loopback0

interface Ethernet 0/0

xconnect 10.0.3.201 123 encapsulation l2tpv3 manual pw-class ether-pw

l2tp id 222 111

l2tp cookie local 4 54321

l2tp cookie remote 4 12345

l2tp hello l2tp-defaults

Configuring a Negotiated L2TPv3 Session for an Xconnect VLAN Subinterface

Example

The following is a sample configuration of a dynamic L2TPv3 session for a VLAN Xconnect interface.

In this example, only VLAN traffic with a VLAN ID of 5 is tunneled. In the other direction, the L2TPv3

session identified by a virtual circuit identifier of 123 receives forwarded frames whose VLAN ID fields

are rewritten to contain the value 5. L2TPv3 is used as both the control plane protocol and the data

encapsulation.

l2tp-class class1

authentication

password secret

pseudowire-class vlan-xconnect

encapsulation l2tpv3

protocol l2tpv3 class1

ip local interface Loopback0