: This image is widely considered one of the most stable and feature-complete IOS images for use in GNS3 . It supports advanced features like MPLS, IPv6, and Firewall services without the heavy resource overhead of modern virtual images.
Once your router boots, you can practice advanced features. Below are quick examples of what this IOS supports: C3725-adventerprisek9-mz.124-15.t5.bin Download