[c-nsp] DCEF720 card together with CEF256/classic line cards in Cat6.5k with Sup720?

[Brian Turnbow]

HI 


> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Lars Fenneberg
> Sent: venerdì 21 settembre 2012 14:42
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] DCEF720 card together with CEF256/classic line cards in
> Cat6.5k with Sup720?
> 
> Hi all,
> 
> I think I might be a little confused on this so I'm asking here:
> 
> Is a DCEF720 card like the WS-X6708-10G-3CXL supported together with a
> Supervisor 720 and a bunch of classic and CEF256 line cards?

Short answer yes, long answer is that mixing dfc cards brings limitations, all dfcsgoing to lowest common denominator, OIR etc.

> 
> If it's supported: Would there still be any remaining benefit in using a
> DFC-equipped card?  I'd think that we would still benefit from the local
> switching and the extra Netflow table.  Anything else?
> 

Yes as you mention netflow, more pps when used with classic cards, avoiding bus stalls come to mind and I think qos policy numbers go up as well IIRC ...

There is a doc on cisco web site with the matrix of what goes on mixing and matching DFCs.

Regards

Brian 


> Cheers,
> Lars
> --
> Lars Fenneberg, lf at elemental.net (private), lf at mcs.de (work) Work
> legalese: MCS Moorbek Computer Systeme GmbH, Hamburg, Handelsregister
> Hamburg B62933, Geschaeftsfuehrer: Kai Brandes, Eckard Kabel
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