[c-nsp] Local-switching on DFC's?

[Kevin Graham]

I had been under the impression that DFC's hairpinned traffic off the
fabric interfaces for local traffic and were still constrained by fabric
speed for forwarding (ie. between two ports on the same module still eats
fabric bandwidth for that module).

Reading some of the press on the 6708 (Cisco's press release doesn't
have much detail), there's mention that it handle 64gb/s locally:

  http://www.networkworld.com/news/2006/092506cisco10g.html?zb&rc=lan

Has this always been the case, or is this something new to the DFC3C?