Re: Q. Best MTU Settings for UK ISP Demon Internet ??

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#553

From: David Riley
Date: Thu, 31 Dec 1998 00:00

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(John Auld) writes:

> Thank you for your tips. I have the dial up working fine, but I have
> seen a few people report significant improvements in data transfer
> rates by adjusting the MTU and other settings. I have read that these
> settings are ISP depandant and so I was hoping to learn what other
> people use.

I use MTU/MRU = 1500 and tcp window = 5840 (set with `route' command)
following advice from Andrew Gierth in msg-id:
<87r9vz4zd5.fsf@erlenstar.demon.co.uk>

I also compile the kernel with `IP: Allow large windows' set to No.

Both these have improved throughput although I still sometimes get
modem <-> modem related stalling (ie can't ping gateway) as I am
still using kflex (Hayes Accura 5670).

Download speeds from ftp.dcu or sunsite are typically 4.2kb/s for
compressed files (connect speed usually 44000 or 46000).

--
David Riley 		dave@dmriley.demon.co.uk

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From: David Riley <dave@dmriley.demon.co.uk>
Subject: Re: Q. Best MTU Settings for UK ISP Demon Internet ??
Date: 1998/12/31
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