On 2012-03-02 12:50, Saku Ytti wrote:
On (2012-03-02 12:07 +0100), Łukasz Bromirski wrote:
Essentially, traffic from one Fabric ASIC to the ports on the
belonging the the same Fabric ASIC will be switched locally if of
course there's a DFC installed.
You don't need DFC for this, DFC has nothing to do with moving actual bits,
it is just for lookups.
That was my oversimplification. What I've meant to say, if the DFC
is installed the process will be "just as simple". For CFC, the
process of moving the data will be similar, but will require request
and answer from Sup over the shared bus.
So without DFC, you're still asking over DBUS from SUP PFC about egress,
but once answer from RBUS comes, you're copying inside the linecard the
packet to egress, without going through fabric.
Yes.
--
"There's no sense in being precise when | Łukasz Bromirski
you don't know what you're talking | jid:[email protected]
about." John von Neumann | http://lukasz.bromirski.net
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