In the topology Router R3 receives 1.1.1.1/32 route information from R2 This route gets next into the routing table But what if R2 installed another protocol or source same route (same subnet and mask) to R1 loopback0 network ? R2 starts poisoning the R1 route in its updates to R3 And the route is deleted from … Continue reading Adertised RIP learnt routes