[c-nsp] What's the "Titan" chip (is this on the DFCs?)

[Andrew Fort]

We have seen these lovely messages from our WS-X6816 cards on a couple 
of occasions.

17287276: TitanIsrMainHandler B8
17287275: TiIsrPktCon 0
17287271: TitanIsrMainHandler B8
17287255: TitanIsrMainHandler B8
17287240: TiIsrRewrEn 0

These are invariably the sign of bad juju involving connectivity loss.

Is the "Titan" chip part of the DFC3A that we have on these cards?

The WS-X6816's will operate without DFCs, correct? (does this just make 
them run in 'classic' mode, or DCEF256 mode?)  We're using DFC3A's along 
with our Sup720-3A.

Cheers,
Andrew