[c-nsp] do i *need* DFCs on the 6500?

[Matt Addison]

> There's also the bus-stall issues, which go away (supposedly) with a
DFC
> installed since they're not connected to the bus.

The chassis bus stall is done by 3 physical pins in the slot, so DFC or
not you still stall and potentially reboot the chassis while
inserting/removing a card- however DFC enabled line cards are not
subject to the packet loss associated with a bus stall [1].

~Matt

1:
http://www.cisco.com/en/US/products/hw/switches/ps708/products_qanda_ite
m09186a00809a7673.shtml#qa4