Manual

Layer 2 Tunnel Protocol Version 3
How to Configure Layer 2 Tunnel Protocol Version 3
42
Cisco IOS Releases 12.0(29)S and 12.2(25)S
3. interface type slot/port
4. atm pvp vpi [l2transport]
5. xconnect peer-ip-address vcid pw-class pw-class-name
DETAILED STEPS
Configuring the Xconnect Attachment Circuit for ATM Single Cell Relay VC
Mode over L2TPv3
The ATM Single Cell Relay VC Mode over L2TPv3 feature maps one VCC to a single L2TPv3 session.
All ATM cells arriving at an ATM interface with the specified VPI and VCI are encapsulated into a single
L2TP packet.
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
interface type slot/port
Example:
Router(config)# interface ATM 4/1
Specifies the interface by type, slot, and port number, and enters interface
configuration mode.
Step 4
atm pvp vpi [l2transport]
Example:
Router(config-if)# atm pvp 5
l2transport
Specifies that the PVP is dedicated to transporting ATM cells.
• The l2transport keyword indicates that the PVP is for cell relay. Once
you enter this command, the router enters l2transport PVP
configuration mode. This configuration mode is for Layer 2 transport
only; it is not for terminated PVPs.
Step 5
xconnect peer-ip-address vcid
pw-class pw-class-name
Example:
Router(config-if-atm-l2trans-pvp)#
xconnect 10.0.3.201 888 pw-class
atm-xconnect
Specifies the IP address of the peer PE router and the 32-bit VCI shared
between the PE at each end of the control channel.
• The peer router ID (IP address) and virtual circuit ID must be a unique
combination on the router.
• pw-class pw-class-name—The pseudowire class configuration from
which the data encapsulation type (L2TPv3) will be taken. The
pw-class parameter binds the Xconnect statement to a specific
pseudowire class. The pseudowire class then serves as the template
configuration for all attachment circuits bound to it.