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# Local Cross-Connects Between Layer 2 Interfaces Using MPLS

You can configure layer 2 services over MPLS to transmit data between two layer 2 interfaces that reside on the same E Series router. In this configuration, which is referred to as a local cross-connect, traffic that arrives at the router’s ingress interface is switched out the egress interface, instead of going through an MPLS core network.

A local cross-connect enables the router to function as a layer 2 switch. It operates with any supported layer 2 service. To configure local cross-connects, you must use the mpls-relay command.

#### Related Topics

- For a list of supported layer 2 services, see Layer 2 Services over MPLS Overview
- For a configuration example that shows how to create local cross-connects between Ethernet/VLAN interfaces, see Configuring Local Cross-Connects Between Ethernet/VLAN Interfaces

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