Q1: Is there any documentation listing the amount of performance enhancement between DFC3a and DFC3b?
Trying to determine if its worthwhile to purchase DFC3b cards for PFC3b module.
Q2: Is it possible to have mixed DFC cards on the same chassis DFC2 and DFC3 with a PFC3B?
Currently have Sup720,msfc3,pfc3b and module cards that are running DFC3a.
I understand that the PFC3b will function as a PFC3a (according to restriction table on installation note doc)
Q1 - Once you are using DFC's over CFC it's more to do with the capabilities of the PFC in terms of route entries and flow entries supported.
Q2 - have a look at this Q&A which shows exactly what happens when you mix and match -