Translating NSSA external routes to backbone area
Posted: 27 May 2014 17:09
Hi,
I have the following setup:
The OS6900 and 3rd party router are members of area 1 which is configured as NSSA.
The 3rd party router redistributes (injects) external routes into OSPF area 1.
These routes are visible in the ospf route table as nssa external routes on the OS6900.
But they do not seem to be translated and injected into area 0 as external routes (type 5) since they are not visible on the SR-7.
Since the OS6900 are ABR, is something required for this translation to occur? When reading the documentation (advanced networking guide) about NSSA, it seem to do the translation automatically.
If I reconfigure area 1 as normal area, then the external routes will show up on the SR-7. But I really want area 1 to be NSSA. Anyone know how to resolve this?
The OS6900 configuration as I remember it:
I have the following setup:
SR-7 -> OS6900 -> 3rd party router
area0 | area1 nssa
The SR-7 and OS6900 are members of backbone area 0.The OS6900 and 3rd party router are members of area 1 which is configured as NSSA.
The 3rd party router redistributes (injects) external routes into OSPF area 1.
These routes are visible in the ospf route table as nssa external routes on the OS6900.
But they do not seem to be translated and injected into area 0 as external routes (type 5) since they are not visible on the SR-7.
Since the OS6900 are ABR, is something required for this translation to occur? When reading the documentation (advanced networking guide) about NSSA, it seem to do the translation automatically.
If I reconfigure area 1 as normal area, then the external routes will show up on the SR-7. But I really want area 1 to be NSSA. Anyone know how to resolve this?
The OS6900 configuration as I remember it:
ip load ospf ip ospf admin-state enable ip ospf area 0.0.0.0 ip ospf interface mgmt area 0.0.0.0 ip ospf interface mgmt admin-state enable ip ospf area 0.0.0.1 ip ospf area 0.0.0.1 type nssa ip ospf interface vlan120 area 0.0.0.1 ip ospf interface vlan120 admin-state enable