On 2010-03-08 06:11, jack daniels wrote:
1) how to identitify if the card is CEF720 or DCEF720
2) in CEF720 if traffic(L2 or L3) is withing same port group of the ASIC
will it go still go to PFC
3) in DCEF720 if traffic(L2 or L3) is withing same port group of the ASIC
will it be hardware swithed by this ASIC only or will it go to PFC.
dCEF720 is a LC that has both the CEF720 architecture (20Gbit/s fabric
channel/channels) and a DFC onboard ('d').
So, a WS-X6724 is a CEF720-style card (1x20Gbit/s channel to fabric),
and with a DFC3 attached goes fully distributed - DFC3 local to the
card is responsible for all features normally PFC would do.
Without DFC, the CEF720-style card only benefit is the switch matrix
connectivity, all decisions are taken centrally by a PFC on the
Sup/RSP.
--
"Everything will be okay in the end. | Łukasz Bromirski
If it's not okay, it's not the end." | http://lukasz.bromirski.net
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