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NOTE: To provide uninterrupted service during an SRP switchover in a scaled

configuration, such as one with 32,000 Martini circuits, set the LDP graceful restart

reconnect time to the maximum 300 seconds and set the LDP graceful restart recovery

timer to the maximum 600 seconds. This requirement is true for all SRP switchovers,

including those in the context of a unified in-service software upgrade.

This chapter describes how to configure different types of layer 2 services over MPLS.

Each procedure uses either the mpls-relay command or the route-interface command

to configure MPLS tunneling.

Related Topics Layer 2 Services over MPLS Overview on page 509•

• For more information about configuring MPLS and the layer 2 interfaces that support

L2VPNs, see Layer 2 Services over MPLS References on page 511

Configuring Frame Relay Layer 2 Services

To configure Frame Relay layer 2 services over MPLS with the RFC-4619 Frame Relay

pseudowire type:

1. Configure the Frame Relay interface.

host1(config)#interface serial 4/1:1/1

host1(config-if)#encapsulation frame-relay ietf

host1(config-if)#frame-relay intf-type dte

host1(config-if)#frame-relay lmi-type ansi

host1(config-if)#interface serial 4/1:1/1.1

host1(config-subif)#frame-relay interface-dlci 17 ietf

2. Specify MPLS tunneling by using the appropriate command.

host1(config-if)#mpls-relay 10.10.100.2 45

host1(config-if)#route interface tunnel mpls:tunnel6 45

3. Configure Frame Relay and MPLS on the remote PE router.

Configuring Interoperation with Legacy Frame Relay Layer 2 Services

To configure the router to interoperate with a router that uses the legacy Frame Relay

pseudowire type for layer 2 services over MPLS: