Distance Vector Routing Protocols
Okay, the distance vector routing algorithm passes its complete routing table contents to neighboring routers, which then combine the received routing table entries with their own routing tables to complete and update their individual routing tables. This is called routing by rumor because a router receiving an update from a neighbor router believes the information about remote networks without verifying for itself if the news is actually correct.
It’s possible to have a network that has multiple links to the same remote network, and if that’s the case, the AD of each received update is checked first. As I said, if the AD is the same, the protocol will then have to use other metrics to determine the best path to use to get to that remote network.
Distance vector uses only hop count to determine the best path to a network. If a router finds more than one link with the same hop count to the same remote network, it will automatically perform...
