Manual

Layer 2 Tunnel Protocol Version 3
How to Configure Layer 2 Tunnel Protocol Version 3
25
Cisco IOS Releases 12.0(29)S and 12.2(25)S
Table 3 shows the valid combinations of configurations.
How to Configure Layer 2 Tunnel Protocol Version 3
This section contains the following procedures:
• Configuring L2TP Control Channel Parameters, page 25 (optional)
• Configuring the L2TPv3 Pseudowire, page 34 (required)
• Configuring the Xconnect Attachment Circuit, page 37 (required)
• Manually Configuring L2TPv3 Session Parameters, page 40 (required)
• Configuring the Xconnect Attachment Circuit for ATM VP Mode Single Cell Relay over L2TPv3,
page 41 (optional)
• Configuring the Xconnect Attachment Circuit for ATM Single Cell Relay VC Mode over L2TPv3,
page 42 (optional)
• Configuring the Xconnect Attachment Circuit for ATM Port Mode Cell Relay over L2TPv3, page 44
(optional)
• Configuring the Xconnect Attachment Circuit for ATM Cell Packing over L2TPv3, page 45
(optional)
• Configuring the Xconnect Attachment Circuit for ATM AAL5 SDU Mode over L2TPv3, page 50
(optional)
• Configuring OAM Local Emulation for ATM AAL5 over L2TPv3, page 51 (optional)
• Configuring Protocol Demultiplexing for L2TPv3, page 53 (optional)
Configuring L2TP Control Channel Parameters
The L2TP class configuration procedure creates a template of L2TP control channel parameters that can
be inherited by different pseudowire classes. L2TP control channel parameters are used in control
channel authentication, keepalive messages, and control channel negotiation. In an L2TPv3 session, the
same L2TP class must be specified in the pseudowire configured on the PE router at each end of the
control channel. Configuring L2TP control channel parameters is optional. However, the L2TP class
must be configured before it is with associated a pseudowire class (see the section “Configuring the
L2TPv3 Pseudowire”).
The three main groups of L2TP control channel parameters that you can configure in an L2TP class are
described in the following sections:
• Configuring L2TP Control Channel Timing Parameters
Table 3 Valid Configuration Scenarios
Scenario IP Address xconnect Configuration
Protocol Demultiplexing
Configuration
Routing Yes No —
L2VPN No Yes No
IPv6 Protocol
Demultiplexing
Yes Yes Yes