[29234] in North American Network Operators' Group
Re: PMTU-D: remember, your load balancer is broken
daemon@ATHENA.MIT.EDU (Andrew Brown)
Thu Jun 15 00:43:48 2000
Date: Thu, 15 Jun 2000 00:14:43 -0400
From: Andrew Brown <twofsonet@graffiti.com>
To: Stephen Sprunk <ssprunk@cisco.com>
Cc: North American Noise and Off-topic Gripes <nanog@merit.edu>
Message-ID: <20000615001443.A12597@noc.untraceable.net>
Reply-To: Andrew Brown <atatat@atatdot.net>
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In-Reply-To: <01e001bfd659$949d8d90$1dac44ab@glock>; from ssprunk@cisco.com on Wed, Jun 14, 2000 at 05:47:52PM -0500
Errors-To: owner-nanog-outgoing@merit.edu
>> The 576 value of the MS PPP MTU is merely a default - it can be
>> changed with a registry hack.
>
>Expecting the tens of millions of novice computer users to set their
>systems for a 1500 byte MTU is irrational. Those who are knowledgeable
>enough to do so are generally reducing it due to "speed up your modem"
>articles and programs which improve interactive performance at the
>expense of throughput.
i think you have two things confused. raising the mtu will "speed up
the modem" since you get more data for less overhead, however
*lowering* the mtu will increase interactivity, since each packet is
smaller, the transmit time is shorter, so the next one can get in/out
sooner. you stand a better chance of getting a "word" in edgewise if
the other guy is using smaller "phrases".
--
|-----< "CODE WARRIOR" >-----|
codewarrior@daemon.org * "ah! i see you have the internet
twofsonet@graffiti.com (Andrew Brown) that goes *ping*!"
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