R21xx-HP FlexFabric 11900 Layer 3 IP Routing Command Reference

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Use undo ipv6 preference to restore the default.
Syntax
ipv6 preference { preference | route-policy route-policy-name } *
undo ipv6 preference
Default
The preference for IPv6 IS-IS is 15.
Views
IS-IS view
Predefined user roles
network-admin
Parameters
preference: Specifies a preference for IPv6 IS-IS, in the range of 1 to 255.
route-policy route-policy-name: Specifies a routing policy by its name, a case-sensitive string of 1 to 63
characters.
Usage guidelines
If multiple dynamic routing protocols find routes to the same destination, the route found by the protocol
with the highest preference is selected as the optimal route.
Examples
# Configure the preference for IPv6 IS-IS as 20.
<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] ipv6 preference 20
ipv6 summary
Use ipv6 summary to configure an IPv6 IS-IS summary route.
Use undo ipv6 summary to remove the summary route.
Syntax
ipv6 summary ipv6-prefix prefix-length [ avoid-feedback | generate_null0_route | [ level-1 | level-1-2 |
level-2 ] | tag tag ] *
undo ipv6 summary ipv6-prefix prefix-length [ level-1 | level-1-2 | level-2 ]
Default
No summary route is configured.
Views
IS-IS view
Predefined user roles
network-admin
Parameters
ipv6-prefix: Specifies an IPv6 prefix for the summary route.