Top-of-Rack Switch for Server Aggregation

You can use the Cisco Catalyst 4900 Switch, part of the data center switching portfolio, as a top-of-rack access layer switch for rack-optimized servers. Specifically, the Cisco Catalyst 4900M is a top-of-server, two-rack unit Ethernet switch optimized for 10/100/1000 and 10 Gigabit Ethernet access devices.

This switch is unique in the top-of-rack space because it is semifixed. This flexibility provides a cost-effective and modular migration path for Gigabit Ethernet to 10 Gigabit Ethernet. The switch has 8 fixed wire-speed 10 Gigabit Ethernet ports and 2 half-slots, which you can fill with any combination of the following:

• 20-port wire-speed 10/100/1000 (RJ-45) half-card
• 8-port (2:1) 10 Gigabit Ethernet (X2) half-card (Cisco TwinGig Converter Module compatible)
• 4-port wire-speed 10 Gigabit Ethernet (X2) half-card