Hi All,
What is the normal effect on routing tables and routing protocol advertisements when directly connected interfaces go down ?
Imagine a 506e with the following config...
Inside - 195.105.100.0/24
Outside - 192.168.0.1/30
A host on the inside on address 195.105.100.3 is staticly nated to 195.200.100.20/24 to the outside.
Ospf is running on the outside and a static route for 195.200.100.0/24 points to the inside interface and is included in the ospf process by way of a redistribute static.
The upstream router (on the outside) is learning of the 195.200.100.0 network via OSPF as expected.
Thing is, when I unplug the INSIDE interface from the network, it goes into "interface up, Line protocol down" but the connected interface routes and associated dependant static routes do not drop out of the routing table, the upstream router continues to hold on to the routes via ospf because the pix is not dropping them.
Even if i shutdown the inside interface, the routes remain...I would have expected them to be dropped...
is this default behaviour and is there a way of getting these networks to be removed from the routing table when the inside interface fails...otherwise I cant see how resilliance can be implemented (other than failover of course, or inserting intermediate routers on the inside)
Many thanks for your help.
Shaun
