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From: Mike Mestnik <cheako911@yahoo.com>
To: lartc@vger.kernel.org
Subject: [LARTC] Modems: Cable or DSL digital blunders that lartc may help with.
Date: Tue, 22 Jun 2004 04:33:59 +0000	[thread overview]
Message-ID: <20040622043359.75922.qmail@web11905.mail.yahoo.com> (raw)

I have a Cable 'modem' that has a problem that many of these devices is
bound to have.  I was wondering what other lartc user thought about this
and if DSL has simular problems.

Cable, being Asymetrical, is able to upload at a given rate and hopefully
has a buffer, in the modem, of some kind.  When I nc(netcat) to a UDP
echo, or discard, server I get about 10Mbps out on my ethernet, but only
256Kbps acctualy receved(reported by an open echo server).  Other traffic
on the link suffers grately from this, so I don't do it oftan :)  I use
htb to curve this and that seams to work nice.

NO REALY MY CABLE MODEM DOSEN'T MAKE ANY ATTEMPT TO, CALL FOR HELP,
CONTROL THE FLOW(aka flow-control, supported by ethernet and rs-232).

TCP workes a bit better, but not if I use more then 7 uploads at once. 
With more then 7 the rate detection, read about this on your own time,
generates more than 3(The TCP limit for 'giving up') * 7(The number of
connectios) of these droped/missing packets that every connection gives
up.




		
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             reply	other threads:[~2004-06-22  4:33 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-22  4:33 Mike Mestnik [this message]
2004-06-22  4:55 ` [LARTC] Modems: Cable or DSL digital blunders that lartc may help with Jason Boxman
2004-06-22  9:29 ` [LARTC] Modems: Cable or DSL digital blunders that lartc may Ed Wildgoose
2004-06-22 16:44 ` [LARTC] Modems: Cable or DSL digital blunders that lartc may help with Mike Mestnik
2004-06-22 21:50 ` [LARTC] Modems: Cable or DSL digital blunders that lartc may Ed Wildgoose
2004-06-23  4:19 ` [LARTC] Modems: Cable or DSL digital blunders that lartc may help with Mike Mestnik
2004-06-23  8:15 ` [LARTC] Modems: Cable or DSL digital blunders that lartc may Ed Wildgoose
2004-06-23 15:37 ` [LARTC] Modems: Cable or DSL digital blunders that lartc may help with Mike Mestnik

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