Understanding Administrative Distance

In this episode of "The Broadcast Storm" we're going to consider a topic on the new CCNA exam blueprint (Exam# 200-301).

It's not a new topic, but it is critical that we understand it. The topic is Administrative Distance.

Administrative Distance (AD) is the believability of a routing source. So, if a router has information from multiple routing information sources about how to reach a specific network, the router will believe (and inject into its IP Routing Table) the network learned from the routing information source with the LOWEST Administrative Distance.

Of course, there are lots of routing information sources a router could have, and we'll compare their ADs in this episode.