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Re: [Fwd: I-D Action:draft-ietf-6man-flow-ecmp-01.txt]

Brian E Carpenter <brian.e.carpenter@gmail.com> Thu, 10 February 2011 00:21 UTC

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Date: Thu, 10 Feb 2011 13:21:19 +1300
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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To: Lucy yong <lucy.yong@huawei.com>
Subject: Re: [Fwd: I-D Action:draft-ietf-6man-flow-ecmp-01.txt]
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On 2011-02-10 12:16, Lucy yong wrote:
> Hi Brian,
> 
>    There is some conflict between these goals: for example, strictly
>    avoiding idle time could cause a small packet sent on an idle path to
>    overtake a bigger packet from the same flow, causing out-of-order
>    delivery.
> 
> I don't understand this. Do you mean the small packet and a bigger packet takes different paths? 

Exactly, if the goal is to keep both paths busy, this could happen,

> If they take the same path, it should not cause out-of-order delivery.

Thus, the method must ensure that all packets from the same user flow
do take the same path.

   brian

> Thanks,
> Lucy
> 
> 
>> -----Original Message-----
>> From: ipv6-bounces@ietf.org [mailto:ipv6-bounces@ietf.org] On Behalf Of
>> Brian E Carpenter
>> Sent: Wednesday, February 09, 2011 2:43 PM
>> To: 6man
>> Subject: [Fwd: I-D Action:draft-ietf-6man-flow-ecmp-01.txt]
>>
>> Hi,
>>
>> This version is intended to respond to the comments made during WG Last
>> Call.
>>
>>    Brian + Shane
>>
>>
>> -------- Original Message --------
>> Subject: I-D Action:draft-ietf-6man-flow-ecmp-01.txt
>> Date: Wed, 09 Feb 2011 12:30:01 -0800
>> From: Internet-Drafts@ietf.org
>> Reply-To: internet-drafts@ietf.org
>> To: i-d-announce@ietf.org
>> CC: ipv6@ietf.org
>>
>> A New Internet-Draft is available from the on-line Internet-Drafts
>> directories.
>> This draft is a work item of the IPv6 Maintenance Working Group of the
>> IETF.
>>
>>
>> 	Title           : Using the IPv6 flow label for equal cost multipath
>> routing and link aggregation in tunnels
>> 	Author(s)       : B. Carpenter, S. Amante
>> 	Filename        : draft-ietf-6man-flow-ecmp-01.txt
>> 	Pages           : 10
>> 	Date            : 2011-02-09
>>
>> The IPv6 flow label has certain restrictions on its use.  This
>> document describes how those restrictions apply when using the flow
>> label for load balancing by equal cost multipath routing, and for
>> link aggregation, particularly for IP-in-IPv6 tunneled traffic.
>>
>> A URL for this Internet-Draft is:
>> http://www.ietf.org/internet-drafts/draft-ietf-6man-flow-ecmp-01.txt
>>
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>

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