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route-policy-name: Name of a routing policy, a string of 1 to 19 characters.
Description Use the
ipv6 preference command to configure the preference for IPv6 IS-IS
protocol.
Use the
undo ipv6 preference command to configure the default preference
for IPv6 IS-IS protocol.
The default preference is 15.
When a router runs multiple dynamic routing protocols at the same time, the
system will assign a preference to each routing protocol. If several protocols find
routes to the same destination, the route found by the protocol with the highest
preference is selected.
Examples # Configure the preference of IPv6 IS-IS protocol as 20.
<Sysname> system-view
[Sysname] isis
[Sysname-isis-1] ipv6 preference 20
ipv6 summary
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 ]
View IS-IS view
Parameters ipv6-prefix: IPv6 prefix of the summary route.
prefix-length: Length of the IPv6 prefix, in the range of 0 to 128.
avoid-feedback: Specifies to avoid learning summary routes via routing
calculation.
generate_null0_route: Generates the NULL 0 route to avoid routing loops.
level-1: Specifies to summarize only the routes redistributed to Level-1 area.
level-1-2: Specifies to summarize all the routes redistributed to Level-1 and
Level-2 areas.
level-2: Specifies to summarize only the routes redistributed to Level-2 area.
tag: Value of an administrative tag, in the range of 1 to 4294967295.
n
If no level is specified in the command, the default is level-2.
Description Use the
ipv6 summary command to configure an IPv6 IS-IS summary route.