Answer to Question #217943 in Computer Networks for Serge COURTOT

Question

Distance Vector Routing was replaced with Link State Routing mainly because of two primary problems. What are they? Name them and elaborate briefly.

Note any areas where you may want or need some further explanation. 

Answer 1

1. Count to infinity problem - this occurs as a result of two neighboring routers sending updates concurrently or in case an interface goes down, causing false information to propagate to all routers.
2. Persistent looping - This is because the Bellman Ford algorithm cannot prevent loops as sharing of information between neighboring routers takes place at intervals. As this loop persists it makes users think that the network has failed and is not responding.