ispf enable

Use ispf enable to enable IPv6 IS-IS incremental SPF (ISPF).

Use undo ispf enable to disable IPv6 IS-IS ISPF.

Syntax

ispf enable

undo ispf enable

Default

IPv6 IS-IS ISPF is enabled.

Views

IS-IS IPv6 unicast address family view

Predefined user roles

network-admin

Usage guidelines

ISPF recomputes only the affected part of the shortest path tree (SPT) instead of the entire SPT when a network topology is changed.

Examples

# Enable IPv6 IS-IS ISPF.

<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] address-family ipv6
[Sysname-isis-1-ipv6] ispf enable