![]() ![]() * image name/model, and replace the idlepc setting for all topologies. * topology*.net files under the /opt/GNS3/Project directory(ies) with a new * * This script will replace all occurrances of a given image name/model in ALL * * IF YOU GET THIS WRONG, YOU MAY SPEND A LOT OF TIME FIXING IT. Open a command prompt – only enter the bits in bold italics – adjust for your situation. * run the script /opt/GNS3/IOS/script to change firmware imageĬhris [hidden – but tip – I have a google mail Ken,Ī good place to start is to back up the project directory in case you screw this up. * make a backup copy of the /opt/GNS3/Project directory * Write down the good idlepc value you found opt/GNS3/READMEs & Scripts/ (or download it from here) to find how to get a good idlepc value, or read The Illusive Art of Acquiring A Good Idle-PC Value * Find a good idlepc value for this router/image. (Click Edit->IOS images and hypervisors: add the Image file & Model) * Configure GNS3 to use this image for this model router * Copy the image to the /opt/GNS3/IOS directory and uncompress it as described above in Part 4 * Enjoy Part 5: I don’t have the recommended C3725 image, but have another c3725 image or and image for a 2600 or 2691 * If your PC seems to be running at a high CPU rate, read Part 5. * Read the Readme files within the GNS3 WorkBench environment * Explore the pre-configured exercises from the desktop, or open the folder “ GNS Files – More exercises here” to explore If your IOS image is the recommended image for a C3725, then you are ready to: Rm NAME_OF_YOUR_IOS_IMAGE.bin #to remove the original Unzip -p NAME_OF_YOUR_IOS_IMAGE.bin > NAME_OF_YOUR_IOS_IMAGE.image ls -lh #to check your uncompressed IOS image was created – enter the following commands cd /opt/GNS3/IOS ls -lh #to check your IOS image is indeed there ![]() * Bring up a command window – Click Applications->Konsole should do it copy the IOS image to Ubuntu’s /opt/GNS3/IOS directory You should be able to see your host machine’s shared folder. ![]() Open the /mnt folder, then the hgfs folder. – Click on the “File System” Icon in the “Places” list (on the left panel) * Open the desktop folder “READMEs and scripts” to open a browser window. * Now from within the Ubuntu environment on the Virtual Machine: click Virtual Machine->Shared Folders->Add Shared Folder click Virtual Machine->Shared Folders->Turn Shared Folders On – VM Fusion (Mac): (Note, you may have to move your mouse to the very top and centre or your screen to see the menu) share the folder where you have stored the IOS image – VMWare Player: (Note, you may have to move your mouse to the very top and centre or your screen to see the menu) * With your Virtual Machine running, choose the appropriate steps below according to the version of VMware you are running: * Note the directory on your host machine where you have stored the IOS image * When the VM opens – maximise the VM to the full screen (you may have to maximise/shrink/maximise to get it to work) Part 4: My VM is running, now what?īefore you can enjoy using GNS3, you have to get your IOS image copied to the virtual machine, and uncompress it. * When asked “Did you move this virtual machine…”, answer “I copied it” vmx file (double click – or open from VMWare) Macintosh OS X ~/Documents/Virtual Machines/ Part 3: First run… Windows 7/Vista /Documents/Virtual Machines/ There would have been such a folder created when you installed VMware Player/Fusion: Windows XP - My documents/Virtual Machines/ * Copy the “GNS3 WorkBench 5.x” folder to your hard drive – into a folder called “Virtual Machines” is a good place. * This program requires a copy of a Cisco IOS image – preferably Part 2: Now that you have VMware installed and an IOS image ready… Go to and get a copy of Vmware Player for Windows (free) or Vmware Fusion for Macintosh (not free) * This program requires VMware to be installed on your host computer. ![]()
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