[c-nsp] Netflow Version 9

[Ziv Leyes]

I wonder what happened to versions 6 to 8...


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Adam Powers
Sent: Friday, January 14, 2011 4:14 PM
To: Dobbins, Roland; cisco-nsp
Subject: Re: [c-nsp] Netflow Version 9

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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