netdev - Re: [PATCH v6] sctp: Implement quick failover draft from tsvwg

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Date:	Sun, 22 Jul 2012 15:18:15 -0400
From:	"Neil Horman <nhorman@...driver.com>" <nhorman@...driver.com>
To:	David Miller <davem@...emloft.net>, vyasevich@...il.com
CC:	netdev@...r.kernel.org, sri@...ibm.com, linux-sctp@...r.kernel.org,
	joe@...ches.com
Subject: Re: [PATCH v6] sctp: Implement quick failover draft from tsvwg

Thanks all!

David Miller <davem@...emloft.net> wrote:

>From: Vlad Yasevich <vyasevich@...il.com>
>Date: Sun, 22 Jul 2012 14:18:12 -0400
>
>> Neil Horman <nhorman@...driver.com> wrote:
>> 
>>>I've seen several attempts recently made to do quick failover of sctp
>>>transports
>>>by reducing various retransmit timers and counters.  While its
>possible
>>>to
>>>implement a faster failover on multihomed sctp associations, its not
>>>particularly robust, in that it can lead to unneeded retransmits, as
>>>well as
>>>false connection failures due to intermittent latency on a network.
>>>
>>>Instead, lets implement the new ietf quick failover draft found here:
>>>http://tools.ietf.org/html/draft-nishida-tsvwg-sctp-failover-05
>>>
>>>This will let the sctp stack identify transports that have had a
>small
>>>number of
>>>errors, and avoid using them quickly until their reliability can be
>>>re-established.  I've tested this out on two virt guests connected
>via
>>>multiple
>>>isolated virt networks and believe its in compliance with the above
>>>draft and
>>>works well.
>>>
>>>Signed-off-by: Neil Horman <nhorman@...driver.com>
> ...
>> Acked-by: Vlad Yasevich <vyasevich@...il.com>
>
>Applied, thanks everyone.

-- 
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