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Re: [i2rs] FW: New Version Notification for draft-krishnan-i2rs-large-flow-use-case-00.txt

Anoop Ghanwani <anoop@alumni.duke.edu> Wed, 16 October 2013 05:14 UTC

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From: Anoop Ghanwani <anoop@alumni.duke.edu>
To: ramki Krishnan <ramk@brocade.com>
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Subject: Re: [i2rs] FW: New Version Notification for draft-krishnan-i2rs-large-flow-use-case-00.txt
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As an attempt to get the discussion on this draft going...

At a high-level level, this mechanisms detects flows (using methods outside
of I2RS) that consume a certain % of link BW.

Then, using I2RS' PBR, it pins that flow to a specific LAG/ECMP component
(which may or may not match what regular hashing would have done) AND it
adjusts the weights used to be used when hashing (which would affect all
the "small" flows to account for the large flow.  This is for what we call
local load balancing.

There's also global load balancing which involves programming a PBR entry
throughout the path of the flow.

Would appreciate any review/comments from folks.

Thanks,
Anoop


On Sun, Oct 13, 2013 at 10:07 PM, ramki Krishnan <ramk@brocade.com> wrote:

> Dear All,
>
> Your comments on this draft are most welcome.
>
> Thanks,
> Ramki (on behalf of the co-authors)
>
> -----Original Message-----
> From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]
> Sent: Sunday, October 13, 2013 10:03 PM
> To: Dave McDysan; Dave Mcdysan; ramki Krishnan; Sriganesh Kini; ramki
> Krishnan; Anoop Ghanwani
> Subject: New Version Notification for
> draft-krishnan-i2rs-large-flow-use-case-00.txt
>
>
> A new version of I-D, draft-krishnan-i2rs-large-flow-use-case-00.txt
> has been successfully submitted by Ram Krishnan and posted to the
> IETF repository.
>
> Filename:        draft-krishnan-i2rs-large-flow-use-case
> Revision:        00
> Title:           I2RS Large Flow Use Case
> Creation date:   2013-10-13
> Group:           Individual Submission
> Number of pages: 9
> URL:
> http://www.ietf.org/internet-drafts/draft-krishnan-i2rs-large-flow-use-case-00.txt
> Status:
> http://datatracker.ietf.org/doc/draft-krishnan-i2rs-large-flow-use-case
> Htmlized:
> http://tools.ietf.org/html/draft-krishnan-i2rs-large-flow-use-case-00
>
>
> Abstract:
>    Demands on networking bandwidth are growing exponentially due to
>    applications such as large file transfers and those with rich media.
>    Link Aggregation Group (LAG) and Equal Cost Multipath (ECMP) are
>    extensively deployed in networks to scale the bandwidth. However,
>    the flow based load balancing techniques used today make inefficient
>    use of the bandwidth in the presence of long lived large flows. This
>    draft presents a use-case to improve the efficiency under such
>    conditions and aims to drive requirements for the I2RS WG.
>
>
>
>
> Please note that it may take a couple of minutes from the time of
> submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> The IETF Secretariat
>
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