Dear all,
Our network has a number of MAN-type switched segments for customer access, routed core with no customer access, ospf area zero is the core and the nssa areas align with the MANs.
I'm trying to build a config on a CPE running JunOS that will ideally :
1. Connect to two different MANs on two assigned WAN ports.
2. Run OSPF on both WANs (so two nssa areas) advertising the direct prefix on the third (assigned LAN) port.
3. Not connect directly to the core, so will not be adjacent to or connect to area zero.
So far, I have OSPF adjacency to the two MANs on the two nssa's, I'm seeing routes from each area, export policy allows ONLY the export of the designated customer prefix (and the LSAs onthe running interfaces). That all seems to be working.
The problem is, despite the default routes being in the ospf database, they are not installed in the routing table :
root@*****# run show ospf database nssa
OSPF database, Area 0.0.0.1
Type ID Adv Rtr Seq Age Opt Cksum Len
NSSA 0.0.0.0 10.x.y.144 0x800028ac 2545 0x20 0x61c2 36
NSSA 0.0.0.0 10.x.y.153 0x800013c2 1012 0x20 0x20fc 36
<snip>
OSPF database, Area 0.0.0.3
Type ID Adv Rtr Seq Age Opt Cksum Len
NSSA 0.0.0.0 10.x.y.143 0x80003677 1074 0x20 0x89c5 36
NSSA 0.0.0.0 10.x.y.151 0x800013da 1732 0x20 0xfb0b 36
root@*****# run show route 0
[edit]
root@*****#
As soon as I take one of the adjancencies down, the default route for the other area is installed.
I'm thinking this is because this device isn't adjacent to area zero. I don't need (in fact would design against) communication between the two areas in question, one is primary, the other is failover.
I was just wondering if someone could tell me whether this would be the expected behaviour? If it is I can work around using bgp to install default route, I just prefer to keep things simple if this can be handled with some kind of special case policy or config...
Thanks, folks, in advance for any trouble taken!