From its older brother IGRP which was developed in 1980s to overcome the limitations of RIP, EIGRP was an "Enhanced" IGRP protocol. The main purpose of EIGRP was to overcome the limitations of classful networks and make EIGRP a classless routing protocol. During designing of this protocol a different …

We have to start somewhere so let’s look at the basics of configuring OSPF. Remember OSPF is an IGP (Interior Gateway Protocol) and allows packet authentication as well as IP multicast when sending and receiving updates. In this post we are configuring OSPF in a single area. In this topology we have four routers and …

In this post I want to walk though the steps to install Rancid on CentOS 7 minimal. Rancid is a great tool to help monitor a device configuration for any changes. It also keeps track of them by using CVS (Concurrent Version System) for backups, so you can go back and compare versions or revert to a previous …

It's only been a week since GNS3 1.0 was released and it's already been updated to 1.1 so in this post I have Ubuntu 14.04 LTS with the latest updates and its time to set up GNS3. GNS3 is an open source tool that helps network professionals run a virtual network right on their computer, GNS3 is not a simulation program …

Get your IOS, IOU, XRV, 1000v, HP, Juniper, Arista, and other images ready because that's the beauty of GNS3, it's here and ready to download. I'm excited for this release although the last post I did was In May of 2014, which was about getting GNS3 Alpha 3 working on Windows, you can see the full post here: GNS3 Alpha …