Cisco ASR 9000 Series Reference Guide

l2transport l2protocol
To configure Layer 2 protocol handling, use the l2transport l2protocol command in interface configuration
mode. To return to the default behavior, use the no form of this command.
l2transport l2protocol cpsv {reverse-tunnel| tunnel}
no l2transport l2protocol cpsv {reverse-tunnel| tunnel}
Syntax Description
Enables L2PT for the interface. L2PT is enabled for the following protocols only:
•
CDP
•
STP
•
VTP
STP includes all Spanning Tree protocol derivatives (RSTP, MSTP,
etc.)
Note
cpsv
Performs L2PT encapsulation on frames as they enter the interface. Also, performs L2PT
de-encapsulation on frames as they exit they interface.
L2PT encapsulation rewrites the destination MAC address with the L2PT destination
MAC address. L2PT deencapsulation replaces the L2PT destination MAC address with
the original destination MAC address.
tunnel
Performs L2PT encapsulation on frames as they exit the interface. Also, perform L2PT
deencapsulation on frames as they enter the interface.
reverse-tunnel
Command Default
None
Command Modes
Interface configuration
Command History
ModificationRelease
This command was introduced.Release 3.7.2
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
These L2 protocols are available:
Cisco ASR 9000 Series Aggregation Services Router VPN and Ethernet Services Command Reference, Release
6.1.x
94
Point to Point Layer 2 Services Commands
l2transport l2protocol

Cisco ASR 9000 Series Specifications

General

Series	ASR 9000
Category	Network Router
Modular Design	Yes
Redundancy	Yes (Hardware and Software)
Operating System	Cisco IOS XR
Interfaces/Ports	10G, 40G, 100G, 400G Ethernet
Expansion Slots	Varies by model
Routing Protocol	BGP, OSPF, IS-IS, EIGRP
Management	CLI, SNMP, NETCONF
Power Supply	Redundant
Port Density	Varies by model
Power Supply Options	AC, DC
Memory	Varies by model
Storage	Varies by model
Dimensions	Varies by model
Weight	Varies by model