Configuring Mpls Layer 2 Vpns; Finding Feature Information; Contents; Overview Of L2Vpn Interworking - Cisco ASR1002 - ASR 1002 Router Software Configuration Manual

Configuring MPLS Layer 2 VPNs

First Published: March 29, 2012
The Frame Relay to Asynchronous Transfer Mode (ATM) Bridged Interworking feature provides
interoperability between the Frame Relay attachment virtual circuit (VC) and the ATM attachment VC
that are connected to different provider edge (PE) routers. The bridged encapsulation corresponding to
the bridged (Ethernet) interworking mechanism is used to enable this interoperability. The Ethernet
frames are carried through the MPLS network using Ethernet over MPLS (EoMPLS). The interworking
function is performed in the PE routers connected to the Frame Relay attachment VC and the ATM
attachment VC based on RFC 2684 and RFC 2427.
The xconnect support on Gigabit EtherChannel (GEC) Virtual Private Wire Service (VPWS) on ASR
1000 feature enables service providers to supply connectivity between customer sites with existing data
link layer (Layer 2) networks by using a single, integrated, packet-based network infrastructure—a Cisco
MPLS network. Instead of separate networks with separate network management environments, service
providers can deliver Layer 2 connections over an MPLS backbone.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest
information about features and caveats, see the release notes document pertaining to your platform and
software release. To find information about the features documented in this module and to view a list of the
releases in which each feature is supported, see the
VPNs" section on page
Use the Cisco Feature Navigator to find information about platform support and Cisco IOS and Cisco
Catalyst operating system software image support. To access the Cisco Feature Navigator, go to
http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Contents

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31.
Overview of L2VPN Interworking, page 2
Prerequisites for Frame Relay DLCI-to-ATM AAL5SNAP Bridged Interworking, page 4
Frame Relay DLCI-to-ATM AAL5SNAP Bridged Interworking, page 4
"Feature Information for Configuring MPLS Layer 2