[c-nsp] netflow sampling

Roland Dobbins rdobbins at arbor.net
Tue May 19 21:28:46 EDT 2009

On May 20, 2009, at 7:21 AM, Roland Dobbins wrote:

> Unfortunately, the caveats associated with NetFlow on past and  
> current 6500/7600 hardware generally tend to render it unsuitable  
> due to the high likelihood of mls table overflow in most  
> circumstances, along with the lack of TCP flags and insight into  
> dropped traffic.

I should point out that the EARL8 ASIC in the Nexus 7000 rectifies  
these issues in IDC environments.  Presumably, if this newer ASIC is  
incorporated in future into 6500 and/or 7600 Supervisors and LCs, it  
would have the same salutary effect for those platforms, as well.

Roland Dobbins <rdobbins at arbor.net> // <http://www.arbornetworks.com>

         Unfortunately, inefficiency scales really well.

		   -- Kevin Lawton

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