user@R1# set ge-1/5/0 unit 12 description R1->R6
user@R1# set ge-1/5/0 unit 12 family inet address 1.1.6.12/24
user@R1# set ge-1/5/0 unit 12 family iso
user@R1# set ge-1/5/0 unit 12 family mpls
2. Assign a loopback address to the device.
[edit interfaces lo0 unit 10]
user@R1# set family inet address 10.255.102.128/32
user@R1# set family iso address 49.0001.1720.1600.1010.00
3. Configure the IS-IS interface for level 2 and the metric value on all the interfaces,
and enable link protection on the protected interface.
[edit protocols isis]
user@R1# set interface all level 2 metric 10
user@R1# set interface lo0.12 passive
user@R1# set interface em0.0 disable
user@R1# set interface ge-1/0/0.1
user@R1# set interface ge-1/5/0.12 link-protection
4. Enable IS-IS node-link protection, which also automatically extends backup coverage
to all LDP label-switched paths.
[edit protocols isis]
user@R1# set spf-options delay 1000
user@R1# set interface all node-link-protection
5. Enable remote LFA backup, which calculates the backup next hop using dynamic
LDP label-switched path.
(Optional) When you include the node-link-degradation statement even if node
protection LFA is not configured for a given destination, the device uses the
configured link protection LFA as the backup for the primary link.
[edit protocols isis]
user@R1# set backup-spf-options remote-backup-calculation
user@R1# set backup-spf-options node-link-degradation
6. Configure MPLS to use LDP label-switched paths for all interfaces on the device.
[edit protocols]
user@R1# set mpls interface all
user@R1# set mpls interface em0.0 disable
user@R1# set ldp interface all
user@R1# set ldp interface em0.0 disable
7. Specify a time interval for which the targeted LDP sessions are kept up when the
remote LFA goes down, and specify a maximum number of automatically, targeted
LDP sessions to optimize the use of memory.
[edit protocols ldp]
user@R1# set auto-targeted-session
user@R1# set auto-targeted-session teardown-delay 60
573Copyright © 2017, Juniper Networks, Inc.
Chapter 18: Configuring Routing Protocols
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