use-post-convergence-lfa
Syntax
use-post-convergence-lfa <maximum-backup-paths maximum-backup-paths> <maximum-labels maximum-labels> ;
Hierarchy Level
[edit logical-systems name protocols isis backup-spf-options], [edit logical-systems name routing-instances name protocols isis backup-spf-options], [edit protocols isis backup-spf-options], [edit routing-instances name protocols isis backup-spf-options]
Description
Calculate post-convergence MPLS fast reroute (FRR)
backup next hops for the IS-IS protocol using segment routing (SR).
Topology-independent loop-free alternate (TI-LFA) provides protection
against link failure, node failure, and fate-sharing failures. By
default, Junos OS provides link protection. Junos OS allows you to
control the maximum number of equal-cost multipath (ECMP) backup paths
installed for a given destination. Junos OS also allows you to control
the maximum number of labels in the installed backup paths. Configure
the use-source-packet-routing statement at [edit protocols
isis backup-spf-options] hierarchy level to allow the backup
paths to be available for inet.0 routing table along with inet.3 routing
table.
Options
| maximum-backup-paths | Set the maximum number of equal-cost post-convergence backup paths to be installed. For remote LFA, the IS-IS protocol installs only one backup path. The maximum backup path range allows you to install multiple backup paths
|
| maximum-labels | Set the maximum number of labels used to construct a post-convergence backup path. If the backup path for a particular prefix requires more number of labels than the configured maximum labels then the backup path for that particular prefix is not installed. Note:
If the
|
Required Privilege Level
routing
Release Information
Statement introduced in Junos OS Release 17.4R1 for MX Series, PTX Series, and QFX Series.