HP VPN Firewall Appliances Network Management Command Reference

858
[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
Route summarization is disabled.
Views
IS-IS view
Default command level
2: System level
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 a administrative tag, in the range of 1 to 4294967295.
Usage guidelines
Configuring summary routes can reduce the size of the route table, LSPs and LSDB. Routes to be
summarized can be IS-IS routes or redistributed routes. The cost of a summary route is the smallest cost
among all summarized routes.
If no level is specified in the command, the default is level-2.
Examples
# Configure a summary route of 2002::/32.
<Sysname> system-view
[Sysname] isis
[Sysname-isis-1] ipv6 summary 2002:: 32
isis ipv6 enable
Use isis ipv6 enable to enable IPv6 for an IS-IS process on an interface.