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Tough one
Three routers A, B, C _____________ / A / | | ospf 0 / / B C / ———– | EIGRP 50 | ———–
Router A - S0 in ospf area 0 Router B - S0 in ospf area 0 Router C - S0 in ospf area 0
Router B - E0 in Eigrp 50 Router C - E0 in Eigrp 50
Redistribute between ospf and Eigrp such that
1) C should always chose B as its default connection unless the connection between B and A is down, then it should choose A. 2) B should always chose A as its default connection unless the connection to A is down, then choose C.
So far I have figured out all except for the connection going down between B and A. I used some AD manipulation and redistributing loopbacks to achive most of the result. But there is one part that I haven’t been able to achive .i.e when the connection between B and A is down, then C should A to send traffic. Is there some way to adjust routing protocol behaviour when an interface goes down. I remember working with ISDN demand circuits but don’t think it will work in this case. Any one want to take a crack at it. By the way, router A is an ABR so there are routes being sent from other areas to area 0.
TIA
