Case: There is R1 and R2 connected to R3. R1 and R2 connected to each other. All 3 routers are running ospf area 0. There is default static route on R2 to another router (lets say R4). All costs are same..
Question: If the connection between R1 and R3 goes down does R2 forward packets for R3 networks to default route for a short period?
Hi, there will be no route until SPF calculates the new route, really fast. It can also be improved by timers something common in ethernet envirnoments.
until that happens we will use the routing table (default route.)
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