On Thursday 13 May 2004 13:28, Andreas Klauer wrote:
Am Thursday 13 May 2004 16:38 schrieb Andreas Klauer:
Am Thursday 13 May 2004 15:54 schrieb Andy Furniss:
I've just noticed that there is a patch on devik's site which does mpu and overhead.
I'll give it a try. Thanks for the hint.
Well, patching was a little difficult... it didn't like the debian patch and I didn't succeed in joining the two patches together because of the weird inject stuff. But anyway. It seems to work, and it looks useful, so I added it to the "Hacks" section of my Fair NAT script together with a patched binary.
Nifty.
But how do you determine what your minimum packet unit (MPU) is? How about overhead for a PPPoE connection?
If you can get a cell count from your modem you can work it out with ping. I don't know what your pppoe is.
Your upstream worst case depends on your bitrate and your MTU. If it's 128k you add about 90ms, 256k 45ms for 1500b packets. What's yours?
With shaping I can max my upstream and still maintain ~ 120ms ping times, but I'd like to get it down to around ~ 70ms.
Andy.
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