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