Prerequisites For Implementing Multipoint Layer 2 Services; Information About Implementing Multipoint Layer 2 Services - Cisco ASR 9000 Series Configuration Manuallines

Implementing Multipoint Layer 2 Services
Release
Release 5.1.0
Release 5.1.1
Release 6.1.2
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Prerequisites for Implementing Multipoint Layer 2 Services

Before configuring Multipoint Layer 2 Services, ensure that these tasks and conditions are met:
• You must be in a user group associated with a task group that includes the proper task IDs. The command
• Configure IP routing in the core so that the provider edge (PE) routers can reach each other through IP.
• Configure a loopback interface to originate and terminate Layer 2 traffic. Make sure that the PE routers
• Configure MPLS and Label Distribution Protocol (LDP) in the core so that a label switched path (LSP)

Information About Implementing Multipoint Layer 2 Services

To implement Multipoint Layer 2 Services, you should understand these concepts:
Prerequisites for Implementing Multipoint Layer 2 Services, on page 203
Information About Implementing Multipoint Layer 2 Services , on page 203
How to Implement Multipoint Layer 2 Services, on page 229
Configuration Examples for Multipoint Layer 2 Services, on page 321
reference guides include the task IDs required for each command.
If you suspect user group assignment is preventing you from using a command, contact your AAA
administrator for assistance.
can access the other router's loopback interface.
Note
The loopback interface is not needed in all cases. For example, tunnel selection
does not need a loopback interface when Multipoint Layer 2 Services are directly
mapped to a TE tunnel.
exists between the PE routers.
L2VPN and Ethernet Services Configuration Guide for Cisco ASR 9000 Series Routers, IOS XR Release 6.3.x
Prerequisites for Implementing Multipoint Layer 2 Services
Modification
Support was added for Multipoint Layer 2 Services
Label Switched Multicast feature.
Support was added for:
• Pseudowire Headend PW-Ether sub-interfaces
(VC Type 5) and Pseudowire Headend PW-IW
interworking interfaces (VC Type 11)
• LFA over Pseudowire Headend.
Support was added for:
• Service Path Preference for L2VPN
• L2VPN Route Policy
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