This post is a part of series of posts about RIP dynamic routing protocol. Here we deepen our understanding on how RIP protocol advertises learnt RIP routes. A simple case is where a route is in the middle of this update process dans got a better route than RIP…
Introduction
Let’s recall first that RIP stands for Routing Information Protocol and it’s a mean by which routers in an autonomous domain exchange information about routes (how to reach destination representeds by those routes), dynamically without the need for doing it manually at each router. It is classified as distance vector which mean that its routing decision relies on a metric: if the first route has a better metric (small) it’s first considered for installation in the routing table. RIP is also an IGP, Interior Gateway Protocol, used within an autonomous system in contract with EGP that is used to connect two or more autonomous systems…
Test topology
Our test topology is a 3 routers network, emulated using Cisco IOS and GNS3, as shown the next figure:
