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Date: Thu, 22 Apr 2010 20:08:53 +0100
From: Bruce Simpson <bms@incunabulum.net>
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Subject: Re: 3-Line MLPPP DSL on BSD - MTU/MRRU/MRU??
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On 04/22/10 18:14, Carrick, David wrote:
> The config works - just don't think it is optimal. I structured it based on the mpd5.conf.sample and some other configurations stolen from dslreports.com.
>
> I am looking more for advised MRU/MTU, and MRRU values for the links and the bundle as a whole as I do not believe my settings are optimal. I have tested a 2link configuration with similar values and obtained very, very fast speeds. Adding the 3rd link with the settings below does improve the speed, but I do not feel it is as fast as it should be.
>    

Tried using hping or other tools to manually discover path MTU in both 
directions?

Yes many DSLAMs clip it below 1500 due to ATM and PPPoA framing overhead.