Tag Archives: GNS3

Adding VPCS to GNS3 v1.1

gns3_icon_256x256I love using GNS3 when I am studying as I can integrate a Virtual Machine, running a TACACS+ server for example, however this does come at a cost of CPU and RAM utilization.

I don’t always need a full Linux VM running when all I want to do is ping or traceroute between two hosts on the network, this is where Virtual PC Simulator (VPCS) comes into play. VPCS is a lightweight PC simulator that has a basic set of network commands such as ping, traceroute and telnet. It does not consume the CPU and memory resources that adding another router or VM would use. VPCS can simulate up to 9 separate ¬†PC at a time. Continue reading Adding VPCS to GNS3 v1.1


Install VirtualBox for use in GNS3

Virtualbox_logoA reader recently requested that I do a post on installing VirtualBox and integrating it into GNS3 on a Linux install, so here it is.

In this post I provide step-by-step installation details for VirtualBox 4.3.18 (the latest version available) as well as the installation of the vboxwrapper for integration into GNS3. Continue reading Install VirtualBox for use in GNS3

GNS3 v1.1 install on Ubuntu 14.04 LTS

gns3_icon_256x256In this post I will be running through the installation of the public release of GNS3 version 1.1 on a clean install of Ubuntu 14.04 LTS.

I am using the Ubuntu Gnome 14.04 LTS distribution, however I have also tested it on a clean install of the standard Ubuntu 14.04 LTS with unity Continue reading GNS3 v1.1 install on Ubuntu 14.04 LTS

GNS3 and IOU remote server install on Centos 6.5

gns3_icon_256x256I recently got a new laptop at work. It has one major downside, it only has 4GB of RAM which is soldered straight into the motherboard and therefore can not be upgraded. Also 500MB of the RAM is reserved for the GPU, so I only have about 3.5GB of useabe RAM. This is fine for running my day to day applications for work, but does not leave much wiggle room for running GNS3.

Luckily I work for a hosting company and we have quite a few servers lying around doing nothing. I managed to get hold of a decommisioned server with 2 quad core processors and 48GB of RAM, perfect to run a remote GNS3 server on. We mainly use Centos and since it is not an OS I am familiar with (I mainly use Ubuntu) I decided to give it a go and try something new. In this post I will run through the steps I went through to get GNS3 sevrer running on Centos as well as setting up the GNS3 GUI to connect to the remote server. Continue reading GNS3 and IOU remote server install on Centos 6.5

Connect GNS3 to the Internet

gns3_icon_256x256It is always useful to be able to connect your GNS3 labs to a real world network such as a physical Lab network of real Cisco devices, connected to you PC, or even to the Internet.

In this post I will provide step by step instructions to connect your GNS3 install to a physical network and to connect to the internet. Continue reading Connect GNS3 to the Internet