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Example of mpls fast reroute configuration, A detailed example of a network is, Router r3 – Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) User Manual

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Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide

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Transit LSP statistics

1

Brocade(config-mpls)# interface e 4/1

Brocade(config-e10000-4/1)# ip address 10.20.1.1 255.0.0.0

Brocade(config-e10000-4/1)# ip ospf area 1

Brocade(config-e10000-4/1)# exit

Brocade(config)# router ospf

Brocade(config-ospf-router)# area 1

Brocade(config-ospf-router)# exit

Router R3

In the configuration in

Figure

43

, Router R3 is the egress LER for LSP t3.

Brocade(config)# router mpls

Brocade(config-mpls)# mpls-interface e 2/1 e 2/2

Brocade(config-mpls)# interface pos 2/1

Brocade(config-e10000-2/1)# ip address 10.20.1.2 255.0.0.0

Brocade(config-e10000-2/1)# ip ospf area 1

Brocade(config-e10000-2/1)# exit

Brocade(config-mpls)# interface e 2/2

Brocade(config-e10000-2/2)# ip address 10.11.1.2 255.0.0.0

Brocade(config-e10000-2/2)# ip ospf area 1

Brocade(config-e10000-2/2)# exit

Brocade(config-mpls)# interface e 3/2

Brocade(config-if-e100-3/2)# ip address 10.30.1.1 255.0.0.0

Brocade(config-if-e100-3/2)# exit

Brocade(config)# router ospf

Brocade(config-ospf-router)# area 1

Brocade(config-ospf-router)# exit

Example of MPLS Fast Reroute configuration

This example describes an MPLS Fast Reroute Loop Configuration. It provides the configuration
required on Ingress Router 4 and examples of the show mpls rsvp session displays for all of the
routers in the configuration. These examples show how the MPLS Fast Reroute configuration of an
LSP affects the RSVP session on each of the routers in the configuration.

As illustrated in

Figure

44

and described in the configuration example that follows, Ingress Router

4 is configured with a strict Label Switch Path A to Egress Router 5. In this configuration, when the
path is broken between Ingress Router 4 and Egress Router 5, Transit Routers 2 or 6 take a detour
path back through Ingress Router 4 and continue through Transit Routers 3 and 1 to reach Egress
Router 5.

FIGURE 44

MPLS Fast Reroute Loop configuration