Cisco Cisco IOS Software Release 12.0(27)S
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Cisco IOS Release 12.0(27)S
Any Transport over MPLS
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 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.
(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 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.
AToM supports the following like-to-like transport types:
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ATM AAL5 over MPLS
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ATM Cell Relay over MPLS
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Ethernet over MPLS (VLAN and port modes)
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Frame Relay over MPLS
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PPP over MPLS
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HDLC over MPLS