We have the following topology:
Core Router > ---area 0--- > Our WAN router > ---area 301 nssa no-summary--- > Provider WAN Router
When I shut the link from the Core Router, our WAN router continues to advertise a default route into the Provider WAN. My reading on the subject indicates that when an NSSA ABR ceases to have an interface in area 0, it should stop advertising the default route into the rest of the NSSA area.
I have verified this in a netlab configuration (running 2811s with AdvIPServices 12.4(24)T1), and it performs as expected. However, when I executed this change in our production environment (running an 1841 with AdvIPServices 12.3(11)YZ2), the default route continues to advertise even when I shut the Core Router interface.
Ideas on where I can look to solve this?
Relevent config on the WAN Router:
interface Loopback0
ip address 172.19.0.254 255.255.255.255
!
interface FastEthernet0/0
ip address 172.16.0.70 255.255.255.252
ip ospf network point-to-point
ip ospf hello-interval 2
ip ospf dead-interval 6
!
interface FastEthernet0/1/0
switchport access vlan 2
!
interface Vlan2
ip address 172.19.0.5 255.255.255.252
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 7 x
ip ospf network point-to-point
ip ospf cost 1000
ip ospf hello-interval 2
ip ospf dead-interval 6
!
router ospf 1
router-id 172.19.0.254
area 301 nssa no-summary
area 302 nssa no-summary
passive-interface default
no passive-interface FastEthernet0/0
no passive-interface Vlan2
no passive-interface Vlan3
network 172.16.0.68 0.0.0.3 area 0
network 172.19.0.4 0.0.0.3 area 301
network 172.19.0.8 0.0.0.3 area 302
network 172.19.0.254 0.0.0.0 area 301
distribute-list 5 in Vlan2
distribute-list 5 in Vlan3
!
