Interior Gateway Routing Protocol (IGRP) was a Cisco-proprietary Distance-Vector (D-V) classful routing protocol — basically an improved version of RIPv1. Like other D-V protocols, each IGRP router periodically flooded its routing table, but it differed from RIP in two ways. First, RIP’s advertisement interval was thirty seconds but IGRP’s was ninety seconds, which allowed IGRP to scale to larger networks than RIP. Second, RIP used a simple hop count metric, but IGRP’s more sophisticated metric was based on minimum path bandwidth and total path delay, with options to include link reliability and interface loading.

Let’s now take a look at some additional techniques that can be used along with network statements to control routing advertisements. Refer to the example topology: Here’s a configuration we could use to get RIPv2 running on the Fa0/1, Fa0/2 and Fa0/3 interfaces: router rip version 2 network 172.16.0.0 network 10.0.0.0 Since we haven’t disabled […]

This time, we’ll take a look at the interaction between network statements, subnet masks and automatic route summarization with RIPv2. To get RIPv2 running on the Fa0/1, Fa0/2 and Fa0/3 interfaces, we’ll use the following configuration: router rip version 2 network 172.16.0.0 network 10.0.0.0 Note that Fa0/1 and Fa0/3 (the network 10.0.0.0 interfaces) are both using […]

Last time, we looked at the basic operation of RIP network statements. Now, let’s look at that topic in more detail.

To get RIPv1 running on the Fa0/1, Fa0/2 and Fa0/3 interfaces (but not on Fa0/0), we used the following configuration:

router rip

network 172.16.0.0

network 10.0.0.0

In packet switching networks, routing directs packet forwarding, the transit of logically addressed packets from their source toward their ultimate destination through intermediate nodes. These nodes are typically hardware devices called routers, bridges, gateways, firewalls, or switches. General-purpose computers with multiple network cards can also forward packets and perform routing, though they are not specialized […]

So far, in our discussion of Router Information Protocol (RIP), we’ve discussed the basics and also verified and reviewed RIP version1. We stated that RIP version 1 is a classful routing protocol that used FLSM and sent it routing updates without the subnet mask.  In this post we will review the features of RIP version […]

In our last post we discussed the basics of Router Information Protocol (RIP) such as the metric and the timers.  We even saw a few examples of debug and show commands to understand some of the processes that occur behind the curtain with RIP.  However, for the CCNA exam you must also have good grasp […]

RIP is a protocol that is used for routing IP networks. It was designed in the early 1980’s for communication between gateways (computers with two NIC’s). It is the oldest routing protocol used by the network industry and is considered by many to be inefficient or border-line obsolete.  However for CCNA students it important to […]