Manual

Layer 2 Tunnel Protocol Version 3
How to Configure Layer 2 Tunnel Protocol Version 3
50
Cisco IOS Releases 12.0(29)S and 12.2(25)S
Configuring the Xconnect Attachment Circuit for ATM AAL5 SDU Mode over
L2TPv3
The ATM AAL5 SDU Mode feature maps the AAL5 payload of an AAL5 PVC to a single L2TPv3
session. This service will transport OAM and RM cells, but does not attempt to maintain the relative
order of these cells with respect to the cells that comprise the AAL5 CPCS-PDU. OAM cells that arrive
during the reassembly of a single AAL5 CPCS-PDU are sent immediately over the pseudowire, followed
by the AAL5 SDU payload.
This task binds a PVC to an L2TPv3 pseudowire for Xconnect service.
SUMMARY STEPS
1. enable
2. configure terminal
3. interface type slot/port
4. pvc [name] vpi/vci [l2transport]
5. encapsulation aal5
6. xconnect peer-ip-address vcid pw-class pw-class-name
DETAILED STEPS
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
pvc [name] vpi/vci
[l2transport]
Example:
Router(config-if)# pvc 5/500
l2transport
Creates or assigns a name to an ATM permanent virtual circuit (PVC),
specifies the encapsulation type on an ATM PVC, and enters ATM VC
configuration mode.
• The l2transport keyword indicates that the PVC is for Layer 2 switched
connections. Once you enter this command, the router enters ATM VC
configuration mode.