On September 30th at Interop New York we announced theCisco Nexus 3100top-of-rack flexible switches. The show floor was buzzing with the news and the Techwise TV video below with Senior Product Manager,Jag Tamvadaand self proclaimed Chief Networking GeekJimmy Ray Purserdiscuss details of the switches.
https://www.youtube.com/watch?v=3EuaaWBRKBU&feature=share&list=PL932C620970B9A779
For a deeper dive into the internal architecture of these switches, have a look at the recently posted whitepaper below
Cisco Nexus 3100 Platform Switch Architecture White PaperfromCisco Data Center