[j-nsp] Netflow data exporting ability on M160

[Joe Shen]

Hi,

thanks for your help.

But, I still don't understand how that 7000pps
controls.

According to "show interfaces" results, we the real
packet rate is lower than that could be dealt by IIRC
when sampling rate is 1:1500. 

Would you please do me a little further favor to
explain how to calculate the right sample rate when
number of monitored interfaces increases ?

best regards

Joe 


> I run "show interfaces" on the M160 with three POS
> sampled. The results:
> 
> so-1/3/0:
> 
>   Input rate     : 2057187176 bps (572668 pps)
>   Output rate    : 1898785304 bps (619012 pps)
> 
> so-3/1/0:
>   Input rate     : 2047617800 bps (563212 pps)
>   Output rate    : 1925071056 bps (615424 pps)
> 
> so-6/0/0:
> 
>   Input rate     : 2148126912 bps (612172 pps)
>   Output rate    : 2061728912 bps (655415 pps)
> 
> The total packet rate is : 3637903pps. It exceed the
> capacity just a little, so I think it's not the
> situation that it should have 2/3 traffic missed. 

 --- Jordan Lowe <jordan at servercentral.net> µÄÕýÎÄ£º
> 
> Joe,
> 
> A 1 in 1500 packet sample rate is going to be way
> too high for this application.  As Richard said
> earier you can only export so many samples per
> second.
> 
> I'd recommend a rate around 5000 if not higher for
> this application and you'll see things will start to
> work properly.
> 
> Jordan Lowe
> Server Central


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