Router# conf t Router(config)# interface fastEthernet 1/0 Router(config-if)# switchport mode access Router(config-if)# switchport access vlan 10 Router(config-if)# no shutdown
Realism vs. emulation: The Catalyst 4500 runs IOS variants tied to hardware modules and ASICs. GNS3 can emulate many router platforms well (via IOS, IOU, or IOSv), but full hardware behavior of a 4500—especially forwarding ASIC features, supervisor failover, and line card specifics—may be approximated rather than perfectly reproduced. Expect accurate CLI and many control‑plane features, but not every hardware-accelerated dataplane detail. cisco 4500 switch ios download for gns3