[c-nsp] NDE on 6500 DFCs

[Tim Stevenson]

IMO, this should *not* consume licenses or count as additional export 
sources, records from the DFCs (at least after 12.2(17a)SX) will 
contain a unique (to the source device) engineId, but the source IP & 
port of the records will be the same regardless of which DFC/PFC the 
flow data was captured on.

Tim

At 12:58 PM 8/15/2006 +0100, christian.macnevin at uk.bnpparibas.com interjected:
>Evidently Crannog does care, the way it's set up. I'm trying to find out
>about NetScout as well.
>
>
>
>
>
>Internet
>p.mayers at imperial.ac.uk
>
>Sent by: cisco-nsp-bounces at puck.nether.net
>15/08/2006 11:46
>
>To
>cisco-nsp
>cc
>
>Subject
>Re: [c-nsp] NDE on 6500 DFCs
>
>
>
>
>
>
>christian.macnevin at uk.bnpparibas.com wrote:
> > Hi,
> >
> > Firstly, thanks for the speedy replies over the past few days. Most
> > useful.
> >
> > Secondly, I'm told by Crannog that the DFCs on my shiny new 6500 67XX
>line
> > cards will export netflow independently of the PFC
>
>The DFC has its own flow cache, that's certainly true.
>
> > and supervisor, thus consuming more software licenses at the other end.
> >
> > That true? I'm pretty sure Tim confirmed it at some stage, but can't
>find
> > it in any presentations I've got stashed.
>
>Depends what you or your software means by "independently". The flow
>records all come from the same source IP and port, but the flow sequence
>numbers did not appear to be synced at least between software and DFC
>flows on our box. One assumes the sequences numbers are not synced
>between DFCs either. nfdump and nfsen don't seem to care however.
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Tim Stevenson, tstevens at cisco.com
Routing & Switching CCIE #5561
Technical Marketing Engineer, Catalyst 6500
Cisco Systems, http://www.cisco.com
IP Phone: 408-526-6759
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