Re: [OPSAWG] draft-gray-sampled-streaming-01.txt

Dmytro Shytyi <ietf.dmytro@shytyi.net> Fri, 27 September 2019 06:50 UTC

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From: Dmytro Shytyi <ietf.dmytro@shytyi.net>
Date: Fri, 27 Sep 2019 08:50:39 +0200
To: "Gray, Andrew A" <andrew.gray@charter.com>
CC: opsawg <opsawg@ietf.org>
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Subject: Re: [OPSAWG] draft-gray-sampled-streaming-01.txt
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Hello,

Is it possible that this approach is applicable to non ASIC equipment? 
For example the devices that are running NFVIs (uCPE I-D "opsawg vysm") with x86 capabilities. Normally the tcpdump/tshark can be started in this kind of devices. One can imagine that this yang model variables could be mapped to the filter arguments  on the sniffing software?

Best,
Dmytro Shytyi.

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On Sep 26, 2019, 22:09, at 22:09, "Gray, Andrew A" <andrew.gray@charter.com> wrote:
>I have updated draft-gray-sampled-streaming with the feedback I have
>received to do (thank you to those that reviewed and provided that
>feedback).
>
>-01 includes additional clarifications about format, clarifying how
>traffic direction is handled, and some other cleanups.  I have not yet
>had a chance to look at Flowspec for rule definitions, so that part is
>not in yet.
>
>Please feel free to take a look, and am interested in getting feedback
>back.  Thanks!
>
>A new version of I-D, draft-gray-sampled-streaming-01.txt
>has been successfully submitted by Andrew Gray and posted to the
>IETF repository.
>
>Name:		draft-gray-sampled-streaming
>Revision:	01
>Title:		Sampled Traffic Streaming
>Document date:	2019-09-25
>Group:		Individual Submission
>Pages:		18
>URL:           
>https://www.ietf.org/internet-drafts/draft-gray-sampled-streaming-01.txt
>Status:        
>https://datatracker.ietf.org/doc/draft-gray-sampled-streaming/
>Htmlized:      
>https://tools.ietf.org/html/draft-gray-sampled-streaming-01
>Htmlized:      
>https://datatracker.ietf.org/doc/html/draft-gray-sampled-streaming
>Diff:          
>https://www.ietf.org/rfcdiff?url2=draft-gray-sampled-streaming-01
>
>Abstract:
>   This document standardizes the means of requesting a sampled capture
>   stream from a router, receiving details about the resulting data
>   flow, and the structure of the data flow itself.  This is
>   specifically tailored to having various hardware ASICs be able to
>   perform this operation as quickly as possible, by allowing
>   communication of the specific bit formats of headers applied to the
>   packet flow, in a way that enhances interoperability between sources
>   and sinks.  Historically, NetFlow and its ilk have been used for
>  these use cases, however the growth in hardware forward speeds is far
>   outpacing the growth in CPU speeds, and the CPU-heavy parts of
>   NetFlow is resulting in a reduction of sampling rates that include
>   all of the fields provided by NetFlow that require CPU lookups.
>
> 
>
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