A multilayer switch, and part of the 5000 Family of switches that consists of the 5500 and 5000 Series. It's well-suited for small to mid-range enterprise backbones. Or so they say!

It features integrated frame and cell switching, full Cisco IOS-based routing support, NetFlow switching, full support for Fast EtherChannel, Gigabit EtherChannel, and ATM. It supports legacy LAN and ATM technologies through Ethernet, Fast Ethernet, Gigabit Ethernet, FDDI, Token Ring, and ATM switch modules. The 5000 Family suppports fve modular chassis: 2-, 5-, 9-, and 13-slot versions.

A Catalyst 5000 ate my balls?