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  • muha med thinks this is interesting:

RIP and IGRP suffer from a major flaw: routing loops . Routing loops happen when information about the loss of a route does not reach all routers in the network because an update packet gets dropped or corrupted. These routers (that have not received the information about the loss of the route) inject bad routing information back into the network by telling their neighbors about the route they know. EIGRP uses reliable transmission for all updates between neighbors. Neighbors acknowledge the receipt of updates, and if an acknowledgment is not received, EIGRP retransmits the...

From

Cover of IP Routing

Note

Causes of a routing loop in Distant Vector