The Cisco Catalyst 4500 series switch cannot be directly emulated in GNS3 because its proprietary Application-Specific Integrated Circuits (ASICs) cannot be simulated by standard computer processors.
To stay on the right side of licensing, there is only one primary path: Download Cisco IOS images and use in GNS3 cisco 4500 switch ios download for gns3
Cisco Modeling Labs (CML): The most reliable way to get GNS3-compatible images is by purchasing a CML Personal License ($199/year). This grants you access to IOSvL2 (Layer 2 Switch) and IOSv (Layer 3 Router) images, which are the industry standard for GNS3 labs. The Cisco Catalyst 4500 series switch cannot be
Learning goals to try in a 4500-style GNS3 lab: Learning goals to try in a 4500-style GNS3
Historically, GNS3 used Dynamips to emulate Cisco hardware. However, Dynamips only supports MIPS-based platforms like the Cisco 7200, 3700, and 2600 series. The Catalyst 4500 series uses a different architecture that Dynamips cannot emulate.
Once you have your IOS image (e.g., c3745-adventerprisek9-mz.124-25d.bin), follow these steps to make it function as a switch.