Redistribute Routes into IS-IS
In this example, the configuration causes OSPFv3 routes to be imported into the IS-ISv6 routing table, and advertised into the ABC instance.
Topology
Figure 14-117: Redistribute Routes into IS-IS
Configuration
R1
#configure terminal | Enter configure mode. |
(config)#interface eth1 | Enter interface mode. |
(config-if)#ipv6 router isis ABC | Enable IS-ISv6 routing on an interface for area 49(ABC). |
(config-if)#ipv6 address 1000::1/64 | Configure IPv6 address on interface. |
(config-if)#commit | Commit candidate configuration to the running configuration |
(config-if)#exit | Exit interface mode. |
(config)#router isis ABC | Create an IS-IS routing instance for area 49 (ABC). |
(config-router)#is-type level-2-only | Configure instance as level-2-only routing. |
(config-router)#net 49.0005.0000.0000.0001.00 | Set a Network Entity Title for this instance, specifying the area address and the system ID. |
(config-router)#commit | Commit candidate configuration to the running configuration |
R2
#configure terminal | Enter configure mode. |
(config)#interface eth1 | Enter interface mode. |
(config-if)#ipv6 router isis ABC | Enable IS-ISv6 routing on an interface for area 49(ABC). |
(config-if)#ipv6 address 1000::2/64 | Configure IPv6 address on interface. |
(config-if)#commit | Commit candidate configuration to the running configuration |
(config-if)#exit | Exit interface mode. |
(config)#interface eth2 | Enter interface mode. |
(config-if)#ipv6 router ospf area 0 | Enable OSPFv3 routing on an interface and assign the Area ID 0. |
(config-if)#ipv6 address 2000::1/64 | Configure IPv6 address on interface. |
(config-if)#commit | Commit candidate configuration to the running configuration |
(config-if)#exit | Exit interface mode. |
(config)#router isis ABC | Create an IS-IS routing instance for area 49 (ABC). |
(config-router)#is-type level-2-only | Configure instance as level-2-only routing. |
(config-router)#net 49.0005.0000.0000.0002.00 | Set a Network Entity Title for this instance, specifying the area address and the system ID. |
(config-router)#address-family ipv6 | Enter 'address-family ipv6' mode, where users can configure IPv6 routing specific configuration |
(config-router-af)#redistribute ospf | Enable redistribution of routes from ospf into the ISIS routing table. |
(config-router-af)# exit-address-family | Exit address family mode. |
(config-router)#commit | Commit candidate configuration to the running configuration |
(config-router)#exit | Exit router mode. |
(config)#router ipv6 ospf | Create an OSPFv3 routing instance. |
(config-router)#router-id 2.2.2.2 | Specify a Router ID (2.2.2.2) for the OSPFv3 routing process. |
(config-router)#end | Exit the current mode and enter privilege mode. |
R3
#configure terminal | Enter configure mode. |
(config)#interface eth2 | Enter interface mode. |
(config-if)#ipv6 router ospf area 0 | Enable OSPFv3 routing on an interface and assign the Area ID 0. |
(config-if)#ipv6 address 2000::2/64 | Configure IPv6 address on interface. |
(config-if)#commit | Commit candidate configuration to the running configuration |
(config-if)#exit | Exit interface mode. |
(config)#router ipv6 ospf | Create an OSPFv3 routing instance. |
(config-router)#router-id 3.3.3.3 | Specify a Router ID (3.3.3.3) for the OSPFv3 routing process. |
(config-router)#commit | Commit candidate configuration to the running configuration |
(config-router)#end | Exit the current mode and enter privilege mode. |
Validation
R1#show clns neighbors
Total number of L1 adjacencies: 0
Total number of L2 adjacencies: 1
Total number of adjacencies: 1
Tag ABC: VRF : default
System Id Interface SNPA State Holdtime Type Protocol
0000.0000.0002 eth1 b86a.97c4.31c5 Up 27 L2 IS-IS
R1#
R2#show clns neighbors
Total number of L1 adjacencies: 0
Total number of L2 adjacencies: 1
Total number of adjacencies: 1
Tag ABC: VRF : default
System Id Interface SNPA State Holdtime Type Protocol
0000.0000.0001 eth1 b86a.97cb.3ec5 Up 8 L2 IS-IS
R2#
R2#show ipv6 ospf neighbor
Total number of full neighbors: 1
OSPFv3 Process (*null*)
Neighbor ID Pri State Dead Time Interface Instance ID
3.3.3.3 1 Full/DR 00:00:34 eth2 0
R2#
R1#show ipv6 route isis
IP Route Table for VRF "default"
i L2 2000::/64 [115/10] via fe80::ba6a:97ff:fec4:31c5, eth1, 00:21:19
R1#
R1#show ipv6 route
IPv6 Routing Table
Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF,
IA - OSPF inter area, E1 - OSPF external type 1,
E2 - OSPF external type 2, E - EVPN N1 - OSPF NSSA external type 1,
N2 - OSPF NSSA external type 2, i - IS-IS, B - BGP
Timers: Uptime
IP Route Table for VRF "default"
C ::1/128 via ::, lo, 01:33:07
C 1000::/64 via ::, eth1, 01:13:36
i L2 2000::/64 [115/10] via fe80::ba6a:97ff:fec4:31c5, eth1, 00:21:29
C fe80::/64 via ::, xe8, 00:39:44
R1#
Last modified date: 10/16/2023