Cisco Cisco IOS Software Release 12.0(22)S

This feature module describes the Ethernet over Multiprotocol Label Switching (MPLS) feature, which 
transports Layer 2 VLAN packets across an MPLS backbone. This feature module is part of the Any 
Transport over MPLS (AToM) product set. This feature module describes the benefits of Ethernet over 
MPLS (EoMPLS) and lists supported platforms. It also provides configuration tasks, examples and 
related commands.

This document includes the following sections:

This feature allows you to connect two VLAN networks that are in different locations, without using 
expensive bridges, routers, or switches at the VLAN locations. You can enable the MPLS backbone 
network to accept Layer 2 VLAN traffic by configuring the label edge routers (LERs) at both ends of the 
MPLS backbone. 

Adding a point-to-point virtual circuit (VC) requires you to configure the two VC endpoints at the two 
PE routers. Only the two PE routers at the ingress/egress points of the MPLS backbone know about the 
VCs dedicated to transporting Layer 2 VLAN traffic. All other routers do not have table entries for those 
VCs.

12.1(8a)E

This feature was introduced on the Cisco 7600 Series Internet routers. See 
the 

 feature 

module. 

12.0(21)ST

This feature was modified to support the Cisco 12000 Series routers. 

12.0(22)S

This feature was modified to support the Cisco 10720 Internet router.