The network uses a distance vector algorithm with hop count as the metric. The implementation has split horizon with poison reverse but it does not use triggered updates or hold down timers. Routers send their distance vectors to each other every 30 seconds and they do not jitter their update times. Subnet 1 R1 R2 R3 R4 Assumption: The subnet 1 fails at time t=0. The update times of each router is as follows. R1: 2.3, 32.3, 62.3, .... R2: 1.7, 31.7, 61.7, .... R3: 14.3, 44.3, 74.3, ... R4: 23, 53, 83, ... R5: 8, 8+30, 6+60, where 0