Computer Sciences > Gate 2022 > Routing and Router
Consider a network with three routers P, Q, R shown in the figure below. All the
links have cost of unity.
The routers exchange distance vector routing information and have converged on the routing tables, after which the link Q−R fails. Assume that P and Q send out routing updates at random times, each at the same average rate. The probability of a routing loop formation (rounded off to one decimal place) between P and Q, leading to count-to-infinity problem, is___________
Correct : 0.5
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