Video Tutorials

Humphrey Cheung ( has created a video tutorial showing how to get GNS3 WorkBench up and running.

Thanks Humphrey – but a couple of comments:
1. GNS3 WorkBench likes uncompressed images with a .image extension for the prepared exercises – in fact it checks to see if there is a “*.image” file in the IOS directory at the start of each prepared exercise. There are instructions on how tho turn a .bin file to a .image file in the IOS directory. In your example you would run the command:

unzip -p c3725-adventerprisek9-mz.124-15.T5.bin > c3725-adventerprisek9-mz.124-15.T5.image

2. The prepared exercises were prepared using the .T10 rather than the .T5, so to make your c3725-adventerprisek9-mz.124-15.T5.image work with the prepared exercises, you’d also need to run the script script to change firmware image also found in the IOS directory – it runs something like this:

Do you have a backup of your /opt/GNS3/Project directory y/n/eXit? [n]:y
 Enter the current image - the one you need to replace (Ctrl+c to abort)
 Enter the replacement image name (Ctrl+c to abort)

If you carry out these extra two steps, then your GNS3 WorkBench will work for all the exercises too.

Chris (RedNectar)

3 Responses to Video Tutorials

  1. Raja Mohamed says:

    How to use ASA with GNS work bench. Please send me the procedure.

    Thanks in advance.

    Raja Mohamed

  2. Jalil says:


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