Category Archives: GNS3

How to add Instructions to GNS3

Posted on 2013/11/29 by RedNectar Chris Welsh

Have you clicked the new menu item – Help | Instructions on GNS3?  This article explains how to make use of this feature, as well as point out some pitfalls along the way.  Getting Started If you want a page of … Continue reading →

Posted in GNS3, GNS3 WorkBench, wordpress | Tagged , , , , , | 1 Comment

GNS3 Network Simulation Guide

Posted on 2013/10/31 by RedNectar Chris Welsh

Finally – it’s published! I can now say I’m a “published author”.  Check out my new book, GNS3 Network Simulation Guide, at PACKT or Amazon. [Get 50% off til March 6 2016 by using THIS  LINK] As the blurb says, it will … Continue reading →

Posted in blog, CCNA, Certifications, Cisco, dynamips, GNS3, GNS3 WorkBench, ICND1, ICND2, idle-max, Idle-PC, idle-sleep, idlemax, idlepc, idlesleep, Labs, vpcs, wordpress | Tagged , , , , | 10 Comments

GNS3 WorkBench Update

Posted on 2013/10/27 by RedNectar Chris Welsh

I know there are quite a few people out there waiting for a GNS3 WorkBench update.  I promised that it would come soon after GNS3 0.8.5, but there have been a couple of significant developments that have caused an equally … Continue reading →

Posted in GNS3, GNS3 WorkBench | Tagged , , , , , , , | 4 Comments

VPCS – with new hypervisor function

Posted on 2013/09/15 by RedNectar Chris Welsh

The Virtual PC Simulator (VPCS) has been a great help to many users of GNS3 and GNS3 WorkBench. (if you are unfamiliar with VPCS, you might like to take this tutorial). One of the limitations that VPCS has is that … Continue reading →

Posted in Cisco, GNS3, GNS3 WorkBench, vpcs | Tagged , | 2 Comments

A Comparison of GNS3 Terminal Applications

Posted on 2013/09/09 by RedNectar Chris Welsh

If you are new to GNS3, you may not realise what a difference your choice of Terminal Application can make to your productivity.  If you then use the same terminal application when you are at the coalface configuring routers, you … Continue reading →

Posted in console, GNS3, GNS3 WorkBench | Tagged , , , , , , , , | Comments Off on A Comparison of GNS3 Terminal Applications

How to compile dynamips on Linux Mint 15.0 Cinnamon

Posted on 2013/08/02 by RedNectar Chris Welsh

The latest dynamips wasn’t available on the .deb distribution yet, so I tried to compile my own. It wasn’t exactly hard, but took a bit of assumed knowledge and Googling to get it figured out. Start by making sure you … Continue reading →

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VIRL and GNS3. One day all routers will be virtual

Posted on 2013/07/16 by RedNectar Chris Welsh

Preamble If you don’t know what VIRL (Virtual Internet Routing Lab) is, read this. If you don’t know what GNS3 is, read this.  The question is, “What impact will the imminent release of VIRL have on GNS3?” Discussion This is … Continue reading →

Posted in Cisco, Cloud, Data Center, Data Centre, dynamips, GNS3, GNS3 WorkBench, Virtual Machine | Tagged , , , , , , , , , , , , , | Comments Off on VIRL and GNS3. One day all routers will be virtual

GNS3 0.8.4 released today here are the highlights

Posted on 2013/07/06 by RedNectar Chris Welsh

The much awaited release of GNS3 0.8.4 was released today.  Apart from the fact that I’ll actually have to do something about the next release of GNS3 WorkBench (which I’ve been stalling on by saying “I’ll release it AFTER 0.8.4”), 0.84 highlights some significant changes. Here … Continue reading →

Posted in dynamips, GNS3, GNS3 WorkBench, Idle-PC, idlepc | Tagged , , , | 1 Comment

How the GNS3 Hypervisor Manager Works

Posted on 2013/07/06 by RedNectar Chris Welsh

I did some work using external hypervisors recently, and came to realise that I did not understand what the GNS3 Hypervisor Manager’s role was.  So I explored a little, and this is what I found The Hypervisor Manager manages images … Continue reading →

Posted in dynamips, GNS3, GNS3 WorkBench | Tagged , , , | 3 Comments

Dynamips/GNS3 Idle-PC explained. Finally!

Posted on 2013/02/24 by RedNectar Chris Welsh

Firstly let me say thanks to Jeremy Grossmann (principal programmer for GNS3) for helping me finally get my head around this concept. I have to admit that I’d I had only a vague idea of what was happening when I … Continue reading →

Posted in dynamips, GNS3, idle-max, Idle-PC, idle-sleep, idlemax, idlepc, idlesleep | Tagged , , , , , , , , , , | 3 Comments