The Cisco Nexus 5020 switch is a 2 RU, top-of-rack switch that provides Ethernet & Fiber Channel consolidation in a single physical cable. The Fiber Channel over Ethernet (FCo E) protocol is used to consolidate Ethernet & Fiber Channel traffic onto the same physical connection between the server & the switch. As a top-of-rack switch, all the servers in the rack connect to the Cisco Nexus 5020 switch, & it connects to the LAN or SAN.