IPv4 Routing Protocols
The routing (forwarding) process depends heavily on having an accurate and up-to-date IP routing table on each router. This section takes another look at routing protocols, considering the goals of a routing protocol, the methods routing protocols use to teach and learn routes, and an example based on the same internetwork shown in the routing example around Figure 4-10.
First, consider the goals of a routing protocol, regardless of how the routing protocol works:
To dynamically learn and fill the routing table with a route ...
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