Summary Example; Configuring Is-Is For Mpls - Juniper IGP - CONFIGURATION GUIDE V11.1.X Configuration Manual

Summary Example

Configuring IS-IS for MPLS

IS-IS has several commands to provide support for MPLS. See JUNOSe BGP and MPLS
Configuration Guide, for a detailed discussion of MPLS. If you configure your tunnel
with the tunnel mpls autoroute announce isis command, MPLS attempts to register
the tunnel endpoint with IS-IS. You must enable this registration with IS-IS by issuing
the mpls traffic-eng command.
When you configure a node as the downstream endpoint of an LSP, you must provide
a stable interface as the router ID for the endpoint. Typically you select a loopback
interface because of its inherent stability. Use the mpls traffic-eng router-id
command to specify the router ID.
By default, IS-IS always uses the MPLS tunnel to reach the MPLS endpoint. Best paths
determined by IS-IS SPF calculations are not considered. You can enable the
consideration of best paths by issuing the mpls spf-use-any-best-path command.
As a result, IS-IS considers metrics for IGP paths and the tunnel metric, and might
forward traffic along a best path, through the MPLS tunnel, or both.
host1(config)#router isis floor12
host1(config-router)#net 47.0010.0000.0000.0000.0001.0001.1111.1111.1111.00
host1(config-router)#exit
host1(config)#interface atm 0/1
host1(config-if)#ip router isis floor12 tag 24
host1(config-if)#isis mesh-group blocked
host1(config-if)#exit
host1(config)#interface atm 1/0
host1(config-if)#ip router isis floor12
host1(config-router)#distribute-domain-wide
host1(config-router)#distance 100 ip
host1(config-router)#default-information originate route-map 9
host1(config-router)#is-type level-1-2
host1(config-router)#summary-address 10.2.0.82 255.255.0.0 level-1-2 tag 90
host1(config-router)#set-overload-bit on-startup wait-for-bgp 450
host1(config-router)#ignore-lsp-errors
host1(config-router)#log-adjacency-changes
host1(config-router)#lsp-mtu 1500
host1(config-router)#lsp-refresh-interval 1000
host1(config-router)#lsp-gen-interval level-2 30
host1(config-router)#max-lsp-lifetime 1500
host1(config-router)#spf-interval level-2 30
host1(config-router)#maximum-paths 16
host1(config-router)#redistribute static ip route-map 5
host1(config-router)#nsf ietf
host1(config-router)#nsf t2 level-1 70
host1(config-router)#nsf t2 level-2 50
host1(config-router)#nsf t3 adjacency
host1(config-router)#exit
host1(config)#clns configuration-time 120
host1(config)#clns holding-time 600
Chapter 6: Configuring IS-IS
Configuring IS-IS for MPLS
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