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Configuring MPLS on a Network

This chapter describes how to configure a network to run Multiprotocol Label Switching (MPLS), including the components and supporting protocols. (See Table 5.)


Table 5: Checklist for Verifying a Network Configured with MPLS
Verifying a Network Configured with MPLS Tasks
Command or Action
Configuring MPLS on Your Network


  1. Configure IP Addresses on Router Interfaces

[edit]
edit interfaces type-fpc/pic/port unit logical-unit-number
set family inet address address
show
commit
  1. Configure IS-IS as the IGP


  1. Enable IS-IS on Routers in Your Network

[edit]
edit protocols isis
set level 1 disable
set interface type-fpc/pic/port level level-number metric metric
set interface fxp0.0 disable
set interface lo0.0
set interface lo0 passive
show
commit

  1. Configure ISO Addressing

[edit]
edit interfaces
set lo0 unit number family iso address address
show
commit

  1. Enable IS-IS on Router Interfaces

[edit]
edit interfaces
set type-fpc/pic/port unit number family iso
show
commit

  1. Verify That IS-IS Adjacencies Are Established

show isis adjacency
  1. Configure OSPF as the IGP


  1. Enable OSPF on Routers in Your Network

[edit]
edit protocols ospf

[edit protocols ospf]
set area area-id interface type-fpc/pic/port
set interface fxp0.0 disable
set area 0.0.0.0 interface lo0
set area 0.0.0.0 interface lo0 passive
set traffic engineering

[edit routing-options]
set router-id router-id

show
commit

  1. Verify That OSPF Neighbors Are Established

show ospf neighbor
  1. Set Up BGP on Routers in Your Network


  1. Define the Local Autonomous System

[edit]
edit routing-options
set autonomous-system as-number
show
commit

  1. Configure BGP Neighbor Connections

[edit]
edit protocols bgp
set group group-name type type neighbor
     neighbor-address
set group group-name local-address local-address
show
commit

  1. Configure a Simple Routing Policy

[edit]
edit routing-options
set static route destination/24 reject


[edit policy-options]
set policy-statement policy-name term term-name from
     route-filter address exact
set policy-statement policy-name term term-name then
     accept


[edit protocols bgp]
set export policy-name
show
commit

  1. Verify That BGP Sessions Are Up

show bgp summary
  1. Enable MPLS and RSVP


  1. Enable MPLS and RSVP on Routers

[edit]
edit protocols
set mpls interface all
set rsvp interface all

[edit protocols mpls]
set interface fxp0.0 disable

[edit protocols rsvp]
set interface fxp0.0 disable
show
commit

  1. Enable MPLS on Transit Interfaces

[edit]
edit interfaces
set type-fpc/pic/port unit number family mpls
show
commit

  1. Establish an LSP in Your Network


  1. Configure the LSP

[edit]
edit protocols mpls
set label-switched-path lsp-path-name to address
show
commit

  1. Verify the LSP

show mpls lsp extensive
Example Configurations for an MPLS Topology

show configuration | no-more

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