Select the desired WIC interfaces and click the Next button. If the selected IOS belongs to a device that has WIC modules, the next screen allows us to install WIC interfaces in WIC slots. Select appropriate interfaces and click the Next button. If the selected IOS belongs to a modular device, the next screen allows us to install the interfaces in available slots.
By default, the wizard automatically allocates the minimum recommended memory (RAM) for the device. The next screen allows us to set the RAM size for this device. Verify or adjust the information and Click the Next button to continue. If necessary, you can also adjust the device name. If the extracted information is incorrect, select the correct platform and chassis number from the drop-down. In the next step, the wizard extracts the hardware information ( platform and chassis number) from the selected IOS file and lists the information on the next screen along with an automatically populated device name. If you only want to use this device for exam preparation or to get some hands-on experience on Cisco IOS, you can ignore this message. Since GNS3 uses a real Cisco IOS, it also follows the same recommendation and warns us about the outdated IOS. In real life, using an outdated device is not recommended. If the selected IOS belongs to an outdated device, the wizard displays a warning message.
Verify the file path again and click the Next button. Unless you have a particular reason to keep IOS files in their original form, click the No option to keep them in compressed format. Compressed files not only consume less space but are also easier to manage. GNS3 supports both compressed and decompressed formats. Select the New Image option, click the Browse button and select the downloaded IOS image file.īy default, IOS files are compressed.
Navigate to the Dynamips -> IOS routersoption in the left pane and click the New button in the right pane. How to use GNS3, GNS3 terminology, and overview Installing and importing Cisco IOS in GNS3Īfter downloading the IOS image file, open GNS3, click Edit and click Preferences. How to Install GNS3 Step by Step Explained The other parts of the tutorial are the following.ĭifferences between Emulation and Simulationĭifferences between Packet Tracer, GNS3, and Cisco VIRL This tutorial is the last part of the tutorial "GNS3 Setup Guide to practice CCNA/CCNP exam topics".
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