2. (Optional) Include the node-link-degradation statement even if node-link protection
is not configured for a given interface.
The device uses the configured link protection LFA as the backup for the primary link.
[edit protocols isis backup-spf-options]
user@host# set node-link-degradation
3. Enable automatically targeted LDP sessions using the loopback addresses between
the PLR and the remote LFA node.
[edit protocols ldp]
user@host# set auto-targeted-session
4. Specify a time interval for which the targeted LDP sessions are kept up even after the
remote LFA node goes down.
[edit protocols ldp auto-targeted-session]
user@host# set teardown-delay seconds
For example, to set a teardown delay value of 60 seconds:
[edit protocols ldp auto-targeted-session]
user@host# set teardown-delay 60
5. Specify the maximum number of automatically targeted LDP sessions to optimize
memory usage.
[edit protocols ldp auto-targeted-session]
user@host# set maximum-sessions number of sessions
For example, to set a maximum sessions allowed to 20:
[edit protocols ldp auto-targeted-session]
user@host# set maximum-sessions 20
Release History Table DescriptionRelease
Starting in Junos OS Release 14.2, the primary goal of a remote loop-free
alternate (LFA) is to increase backup coverage for IS-IS routes and provide
protection especially for Layer 1 metro-rings.
14.2
Related
Documentation
auto-targeted-session•
• remote-backup-calculation
• no-eligible-remote-backup
• Example: Configuring Remote LFA over LDP Tunnels in IS-IS Networks
• Understanding Remote LFA over LDP Tunnels in IS-IS Networks on page 564
567Copyright © 2017, Juniper Networks, Inc.
Chapter 18: Configuring Routing Protocols
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