Setting up GNS3 1.1 on Ubuntu

gns3_logoIt’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 but rather an emulation program. So if you wanted to test a configuration change but did not want to run it on production you can run it in GNS3 instead.  This gives network professionals testing without touching any physical hardware or purchasing that expensive test lab for certification studies. Let’s get started. Continue reading

Cisco Lab Setup

When it comes to learning and getting started with Cisco there are some tools that will help out a lot like Packet Tracer, GNS3 and other emulators. These are great tools for that “simulation” of hands on learning, but you can’t always stay in that area. I find it best to get hands on with “real” Cisco Gear and so with this post I’ll go through my current setup of what I have and ask that question when it is a good time to get a lab? Just because you may want to get a lab that does not guarantee you’ll actually learn and or pass.   Continue reading

Part 1 – The Joys of Subnetting!

Since network technicians work with IP addressing, it is hugely important to understand subnetting. I remember back when I started to learn subnetting it was confusing and I wanted nothing to do with it. The thing that made me change my mind was after I understood it and how important it is. In the “Cisco world” they don’t cover useless topics, there is always a reason why they expect you to know this and it’s not just for the exams. Subnetting has always had its moments with people and in this blog I’ll do my best to show you what I have done to make subnetting an easier experience. Continue reading

Trunking Administrative Modes

When looking at the CCNA it is good idea to get a hold of trunking between switches along with that there are a couple of administrative modes that each physical interface on Cisco switch can be when you are trunking between them. Remember that when we are trunking it usually carries all VLANs (This can be changed) but there are different ways to make trunking between links happen. Continue reading

Configure Router on a Stick

A while ago I talked about putting different VLANs on a switch, remember a VLAN is virtual network that although physically it may look like on the same network that does not always mean the case. By having VLANs you are segmenting the network and the only way to get to the other side is having a router. I have already configured the Cisco switch as posted in Creating VLANs but in summary I have three VLANs total VLAN 1 which is the native VLAN, VLAN 2 and VLAN 3 (which is called support. If you like to understand how create VLANs on a switch follow the post above. Continue reading