Routing Protocols

Routers communicate paths between themselves with routing protocols.

This way they always know the shortest path between two hosts (hops) and what paths are available.

Let’s say you’re on the INET in

Omaha and attach to a server in SF

One potential router path might be:

Omaha-St Louis-LA-SF

Another path might be:

Omaha-NYC-Atlanta-SF

Yet a third path could be:

Omaha-Minneapolis-Atlanta-SF