Cisco Cisco IOS Software Release 12.2(33)SRE

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Any Transport over MPLS (AToM) transports Layer 2 packets over a Multiprotocol Label Switching 
(MPLS) backbone. AToM enables service providers to connect 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 using separate networks with network management environments, 
service providers can deliver Layer 2 connections over an MPLS backbone. AToM provides a common 
framework to encapsulate and transport supported Layer 2 traffic types over an MPLS network core. 

Configuration information for AToM on the Cisco 7600 router in Cisco IOS Release 12.2(33)SRA is 
included in the following documents:

The “Configuring PFC3BXL and PFC3B Mode Multiprotocol Label Switching” module of the 
Cisco 7600 Series Cisco IOS Software Configuration Guide, 12.2SR at the following URL:

The “Configuring Multiprotocol Label Switching on the Optical Services Modules” module of the 
OSM Configuration Note, 12.2SR at the following URL:

The “Configuring Multiprotocol Label Switching on FlexWAN and Enhanced FlexWAN Modules” 
module of the FlexWAN and Enhanced FlexWAN Modules Configuration Guide at the following 
URL:

The “Configuring Any Transport over MPLS on a SIP” section and the “Configuring AToM VP Cell 
Mode Relay Support” section of the Cisco 7600 Series Router SIP, SSC, and SPA Software 
Configuration Guide at the following URLs, respectively:

The Release Notes for Cisco IOS Release 12.2SR for the Cisco 7600 Series Routers at the following 
URL: