CCNA All in One

GNS3 runs great on Ubuntu, and it's easy to install. This quick tutorial provides the steps to install GNS3, with IOU support, on Ubuntu 14.0.4.1 LTS 64-bit. When finished, you'll still have to install an IOU license file (for IOU support), IOU image files, and IOS image files; GNS3 does not provide any of those files, so you'll have to acquire them on your own. --- GNS3 is installed from a Terminal command line --- # - After opening a terminal, I recommend changing to your user directory. $ cd ~ # - Run apt-get update $ sudo apt-get  update # - Install GNS3 Python dependencies $ sudo apt‐get install python3‐setuptools $ sudo apt‐get install python3‐pyqt4 $ sudo apt‐get install python3‐ws4py $ sudo apt‐get install python3‐netifaces #- Install Dynmips dependencies $ sudo apt-get install cmake $ sudo apt‐get install libelf‐dev $ sudo apt‐get install uuid‐dev $ sudo apt‐get install libpcap‐dev # - Download and unzip GNS3 Linux sou...

Hello welcome to the world of networking.In case of CCNA we can do all most all labs in your home with the help of simulators. Both Packet Tracer and GNS3 is good in aspect of CCNA. But best is follow these steps.. a) For learners new to CCENT / CCNA - Packet Tracer's advantage is that it restricts the number of commands that can be viewed at any mode.  Therefore, the student should  feel less overwhelmed (or distracted) as he/she progresses through the CCENT / CCNA curriculum. b) After the learner reaches a good confidence level and have done several labs using PT. Then, she/he can consider using GNS3 for a more realistic IOS feel.  GNS3 runs the actual IOS so that the learner will be exposed the all the commands on the actual router. c) Please note though that GNS3 requires much more hardware resources (CPU, RAM etc) to do the more complex labs.  For example :  A simple lab with 3 routers that are running OSPF may cause GNS3 to give "mixed results -- ...