Thread (11 messages) 11 messages, 9 authors, 2011-08-09

Re: 802.3ad bonding brain damaged?

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From: Chris Adams <hidden>
Date: 2011-08-08 20:14:13

Once upon a time, Phillip Susi [off-list ref] said:
On 8/8/2011 3:57 AM, David Lamparter wrote:
quoted
No, it isn't. 802.3ad/.1AX explicitly requires that no packet
re-ordering may ever occur, which can only be guaranteed by enqueueing
packets for one host on one TX interface. This behaviour is mandated by
802.1AX-2008 page 15 which reads:
Outch, that does cause a big problem for store-and-forward switching. 
You basically can't split up packets from a single stream without very 
careful cut-through switching, which we obviously can't do in Linux. 
That seems a rather silly requirement given that higher level protocols 
already deal with packet reordering.  Why not an option to say stuff the 
standard?
Packet reordering introduces jitter, which is bad for things like VOIP.
-- 
Chris Adams [off-list ref]
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.
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