Configuring IPv6 IS-IS route control

1. Enter system view.

system-view

N/A

2. Enter IS-IS view.

isis [ process-id ] [ vpn-instance vpn-instance-name ]

N/A

3. Specify a preference for IPv6 IS-IS routes.

ipv6 preference { route-policy route-policy-name | preference } *

By default, the default setting is 15.

4. Configure an IPv6 IS-IS summary route.

ipv6 summary ipv6-prefix prefix-length [ avoid-feedback | generate_null0_route | [ level-1 | level-1-2 | level-2 ] | tag tag ] *

By default, no IPv6 IS-IS summary route is configured.

5. Generate an IPv6 IS-IS default route.

ipv6 default-route-advertise [ [ level-1 | level-1-2 | level-2 ] | route-policy route-policy-name ] *

By default, no IPv6 default route is generated.

6. Configure IPv6 IS-IS to filter redistributed routes.

ipv6 filter-policy { acl6-number | prefix-list prefix-list-name | route-policy route-policy-name } export [ protocol [ process-id ] ]

By default, IPv6 IS-IS does not filter redistributed routes.

This command is usually used together with the ipv6 import-route command.

7. Configure IPv6 IS-IS to filter received routes.

ipv6 filter-policy { acl6-number | prefix-list prefix-list-name | route-policy route-policy-name } import

By default, IPv6 IS-IS does not filter received routes.

8. Configure IPv6 IS-IS to redistribute routes from another routing protocol.

ipv6 import-route protocol [ process-id ] [ allow-ibgp ] [ cost cost | [ level-1 | level-1-2 | level-2 ] | route-policy route-policy-name | tag tag ] *

By default, IPv6 IS-IS does not redistribute routes from any other routing protocol.

9. Configure the maximum number of redistributed Level 1/Level 2 IPv6 routes.

ipv6 import-route limit number

By default, the maximum number of redistributed Level 1/Level 2 IPv6 routes is not configured.

10. Configure route advertisement from Level-2 to Level-1.

ipv6 import-route isisv6 level-2 into level-1 [ filter-policy { acl6-number | prefix-list prefix-list-name | route-policy route-policy-name } | tag tag ] *

By default, IPv6 IS-IS does not advertise routes from Level-2 to Level-1.

11. Configure route advertisement from Level-1 to Level-2.

ipv6 import-route isisv6 level-1 into level-2 [ filter-policy { acl6-number | prefix-list prefix-list-name | route-policy route-policy-name } | tag tag ] *

By default, IPv6 IS-IS advertises routes from Level-1 to Level-2.

12. Specify the maximum number of ECMP routes for load balancing.

ipv6 maximum load-balancing number

By default, the maximum number of ECMP routes is the same as that configured in the max-ecmp-num command.

For more information about the max-ecmp-num command, see Layer 3—IP Routing Command Reference.