Next screen allows us set the RAM size for this device. By default wizard automatically allocates the minimum recommended memory RAM for device. But if require, we can adjust it to match with our specific requirement. Click Idle-PC finder button and use the suggested value in this field. How to install GNS3 step by step Process.
Select New Image option and click Browse button. Now select the downloaded IOS image file which you want to use for your lab. GNS3 supports both type of files compressed and decompressed and by default IOS files are compressed. If GNS3 asked to decompress the file, select no. Click next and continue the Wizard. If selected IOS belongs to an outdated device, wizard may display a warning message.
In real life, using an outdated device is not recommended. Now wizard extracts the hardware information platform and chassis number form selected IOS file and lists it in next screen along with an automatically populated device name. If extracted information does not match with device, select the correct platform and chassis number from drop down. If you have not yet worked with GNS3, we would highly recommend you to visit the following links that will guide you how to download and use GNS3.
Using GNS3 is not as difficult as people think. We assume you follow the legal license terms. Note: Some of the above-mentioned links may not work because it might be possible that their URLs are changed or the IOS images are removed from the hosting server. Take a quick look at the following step by step GNS3 tutorials and start to learn from the beginning to advance GNS3 configurations.
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