[c-nsp] Netflow Version 9

[Adam Powers]

I would say the only drawback is that v9 is a tad bit more complicated to
set up due to its configurable nature (see Cisco's Flexible NetFlow) but
that's about it. As Roland said "it's all upside".



On 1/14/11 5:17 AM, "Dobbins, Roland" <rdobbins at arbor.net> wrote:

>
>On Jan 13, 2011, at 9:30 PM, Righa Shake wrote:
>
>> What are the pros and cons as compared to version 5.
>
>v5 is a fixed format which is no longer being developed - all NetFlow
>implementation moving forward are based upon v9.
>
>v9 gives you egress NetFlow, support for MPLS, and is an extensible
>telemetry format which enables features like Flexible NetFlow, which
>provides finer-grained information about network traffic.
>
>> what is version 9 impact on router and traffic
>
> 
>Nil - single-digit CPU, 0.5% - 1.5% of overall traffic volume, multiplied
>by sampling factor (i.e, for 1:100, you'd multiply by 0.01).
>
>You don't really have a choice; you must implement v9, as v5 is obsolete
>and is no longer being developed.  But it's all upside, with no drawbacks.
>
>-----------------------------------------------------------------------
>Roland Dobbins <rdobbins at arbor.net> // <http://www.arbornetworks.com>
>
>          Sell your computer and buy a guitar.
>
>
>
>
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