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Re: [lvs-users] Fully disabling UDP "persistence"

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [lvs-users] Fully disabling UDP "persistence"
From: Christian Balzer <chibi@xxxxxxx>
Date: Fri, 3 Apr 2009 18:36:21 +0900
Hello Malcom,

On Fri, 3 Apr 2009 09:26:10 +0100 Malcolm Turnbull wrote:
> 
> We use the OPS one packet scheduling patch for this....for people
> using UDP SIP gateways.
> can't remember where it is off the top of my head though.
> give me a shout if you can't find it.
>

Ah yes, found it at:
http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.UDP.html

Funnily enough the section: 
22.4. Julian's One Packet Scheduler (OPS) forUDP, timeouts for DNS

starts with this sentence:
"Although UDP packets are connectionless and independant of each other, in
an LVS, consecutive packets from a client are sent to the same realserver, at 
least till a timeout or a packet count has been reached."
                          ^^^^^^^^^^^^
Never read anything about a packet count based scheduler, could somebody
clue me in here or was that wishful thinking by the author? ^o^

The section goes on about how OPS could break RADIUS reply packets, but
since I'm using a DR based setup this should be a non-issue. 

Regards,

Christian
-- 
Christian Balzer        Network/Systems Engineer                NOC
chibi@xxxxxxx           Global OnLine Japan/Fusion Network Services
http://www.gol.com/
https://secure3.gol.com/mod-pl/ols/index.cgi/?intr_id=F-2ECXvzcr6656

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