Re: [pmacct-discussion] sampling incoming data

[Paul Lockaby]

Thanks for the response and especially the link. If I'm reading that thread 
correctly, it seems that the sampling_rate option in nfacct will only work if I 
use a non-template based flow export like Netflow v5.

I'll double check with the router folks on Monday but my understanding so far 
is that they can only export IPFIX to one destination with the version of Junos 
we've got running.

Thanks again,
-Paul

> On Feb 21, 2016, at 4:03 PM, Paolo Lucente  wrote:
> 
> 
> Hi Paul,
> 
> Your understanding is correct; please note that by doing so you
> will achieve flow sampling at the collector (as opposed to packet
> sampling at the router). Although slightly different, please read
> a few thoughts on flow sampling in this recent thread:
> 
> https://www.mail-archive.com/pmacct-discussion@pmacct.net/msg02974.html
> 
> If possible, i would recommend to export twice from the routers,
> one export with a 1:1 sampler for your colleagues, the other with
> the sampler matching your needs for you.
> 
> Cheers,
> Paolo
> 
> On Sat, Feb 20, 2016 at 03:35:43AM +, Paul Lockaby wrote:
>> Hello everyone,
>> 
>> The folks that maintain the routers want to start exporting IPFIX at a 1:1 
>> ratio so they can feed it into their network monitoring system. I, on the 
>> other hand, can't process 1:1 quickly enough to aggregate billing 
>> information in a timely manner. I *think* the "sampling_rate" option will 
>> allow nfacctd to sample the incoming data and write CSV files that are 
>> sampling of what is coming in, if I'm reading the docs correctly. But I want 
>> to make sure that it does by asking around to see. Am I reading the docs 
>> correctly?
>> 
>> Thank you,
>> -Paul
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Re: [pmacct-discussion] sampling incoming data

[itriA30110]

1 on 1 ratio is a crisis to database in busy data center. You'll need to define 
a level of granularity . And yes sampling_rate is for that purpose.

Sent from my ASUS

 原始郵件 
寄件者：Paul Lockaby
傳送日期：Sat, 20 Feb 2016 11:46:02 +0800
收件者：pmacct-discussion@pmacct.net
主旨:[pmacct-discussion] sampling incoming data

Hello everyone,

The folks that maintain the routers want to start exporting IPFIX at a 1:1 
ratio so they can feed it into their network monitoring system. I, on the other 
hand, can't process 1:1 quickly enough to aggregate billing information in a 
timely manner. I *think* the "sampling_rate" option will allow nfacctd to 
sample the incoming data and write CSV files that are sampling of what is 
coming in, if I'm reading the docs correctly. But I want to make sure that it 
does by asking around to see. Am I reading the docs correctly?

Thank you,
-Paul
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[pmacct-discussion] sampling incoming data

[Paul Lockaby]

Hello everyone,

The folks that maintain the routers want to start exporting IPFIX at a 1:1 
ratio so they can feed it into their network monitoring system. I, on the other 
hand, can't process 1:1 quickly enough to aggregate billing information in a 
timely manner. I *think* the "sampling_rate" option will allow nfacctd to 
sample the incoming data and write CSV files that are sampling of what is 
coming in, if I'm reading the docs correctly. But I want to make sure that it 
does by asking around to see. Am I reading the docs correctly?

Thank you,
-Paul
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