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Configuring IS-IS FRR using a routing policy
You can use the apply fast-reroute backup-interface command to specify a backup next hop in a
routing policy for routes matching specific criteria. You can also perform this task to reference the
routing policy for IS-IS FRR. For more information about the apply fast-reroute backup-interface
command and routing policy configurations, see "Configuring routing policies."
T
o configure IS-IS FRR using a routing policy:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Configure the source
address of echo packets.
bfd echo-source-ip
ip-address
By default, the source address of
echo packets is not configured.
3. Enter IS-IS view.
isis
[ process-id ] [
vpn-instance
vpn-instance-name ]
N/A
4. Enable IS-IS FRR using a
routing policy.
fast-reroute
route-policy
route-policy-name
By default, this feature is not
enabled.
Configuring BFD for IS-IS FRR
By default, IS-IS FRR does not use BFD to detect primary link failures. To speed up IS-IS
convergence, enable BFD single-hop echo detection for IS-IS FRR to detect primary link failures.
To configure BFD for IS-IS FRR:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Configure the source IP
address of BFD echo
packets.
bfd echo-source-ip
ip-address
By default, the source IP address
of BFD echo packets is not
configured.
For more information, see High
Availability Command Reference.
3. Enter interface view.
interface
interface-type
interface-number
N/A
4. Enable BFD for IS-IS FRR.
isis primary-path-detect bfd
echo
By default, BFD for IS-IS FRR is
disabled.
Displaying and maintaining IS-IS
Execute display commands in any view and the reset command in user view.
Task Command
Display brief IS-IS backup configuration
information.
display isis brief
[ process-id ] [
standby slot
slot-number ]
Display IS-IS GR log information.
display isis graceful-restart event-log slot
slot-number
Display the IS-IS GR status.
display isis graceful-restart status
[
level-1
|
level-2
]
[ process-id ]
Display IS-IS backup interface
information.
display isis interface
[ interface-type interface-number ]
[
verbose
] [ process-id ]
[
standby
slot
slot-number ]
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