fast-reroute

Use fast-reroute to configure IPv6 IS-IS FRR.

Use undo fast-reroute to disable IPv6 IS-IS FRR.

Syntax

fast-reroute { lfa | route-policy route-policy-name }

undo fast-reroute

Default

IPv6 IS-IS FRR is disabled.

Views

IS-IS IPv6 unicast address family view

Predefined user roles

network-admin

Parameters

lfa: Calculates a backup next hop through Loop Free Alternate (LFA) calculation for all routes.

route-policy route-policy-name: Uses the specified routing policy to designate a backup next hop. The route-policy-name argument is a case-sensitive string of 1 to 63 characters.

Usage guidelines

ECMP routes do not support FRR.

Examples

# Enable IPv6 IS-IS FRR to calculate a backup next hop through LFA calculation for all routes.

<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] address-family ipv6
[Sysname-isis-1-ipv6] fast-reroute lfa

Related commands

display isis route ipv6