Configuring IPv6 IS-IS route control
Before you configure IPv6 IS-IS route control, complete basic IPv6 IS-IS configuration.
To configure IPv6 IS-IS route control:
Step | Command | Remarks |
---|---|---|
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. |