First of all, may I welcome you to my site. My name is Chris and I'm from the UK and work as a Systems Engineer for Cisco. This blog was initially created to post up my subnetting technique but has now got more stuff to do with attaining Cisco certifications. Either way I really hope that the content is sufficent for your needs and I look forward to hearing your feedback. If you find that the content really helps you please feel free to donate using the PayPal link on the right.

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GNS3 PEMU Configuration Guide - latest version 0.4.1

The latest version of GNS3 (0.4.1) offers:

* A dynamic mode (no design/emulation modes)
* A new .net save/load.
* c1700 and WICS support.
* PIX emulation.
* Dynamips's ATM bridge.
* Capture feature for links from the GUI.
* IDLE PC calculation from the GUI.
* GUI improvements (save the window state when closing GNS3 ...)
* Annotation feature.
* Project feature (you can keep router configs, nvram ...)
* NULL NIO support.
* PDF export.
* New languages.

For those that need to set up GNS3 for the first time, I have amended my GNS3 Configuration Guide based on version 0.3.x so that users of 0.4.x can understand and follow it too.

Anyway, back to the stand-out new feature - PIX emulation, yay! My only minor gripe is that PIX is now EOL but as there are loads of PIX firewalls out there I'm not complaining.

Hopefully you can tell but I'm not the kind of guy to leave people in the lurch and chuck them in the deep end so here is a step-by-step guide on how to configure a PIX firewall in the latest version of GNS3.

1. Download and install the latest version of GNS3 from http://www.gns3.net/download and ensure that you install the PEMU wrapper (this is done by default when installing GNS3).

2. Open up GNS3 and you will see a screen like the following (notice how it has changed from the old version, especially that you run the IOS and console to devices from the one screen).

3. Now go to Edit on the menu bar and select Preferences. You will now see the screen below:

4. Now select the PEMU option from the left-hand menu to be presented with a screen like the one below. All you need to do now is point to the PIX Image where it says "PIX Image". Once you have done that click on Apply, then Close.

5. Now drag and drop a PIX firewall from the left-hand menu of the main screen onto the centre stage. Right-click on the firewall and select Start then Console:

6. You should now see your Console session to your PIX firewall as below:

Posted byChris Bloomfield at 11:26  


binoy said... 30 May 2008 at 05:51  

i am using the latest version. i tried to add switch ports to 3640 router. when right clicking the router i can see the ports. but when i typing "show ip int brief" command it displays only serial port. i cant confiure vlan. plz help me

Chris Bloomfield said... 6 June 2008 at 10:54  

Have you tried using the 3660?

Shane said... 8 July 2008 at 04:40  

Can you explain clearly what route summarization is? It would be nice is you could use the same technique as your subnetting tip.


Chris Bloomfield said... 8 July 2008 at 13:17  

Check November 2007 for a Route Summarization example

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