Modems: Cable or DSL digital blunders that lartc may help with.

Linux Advanced Routing and Traffic Control

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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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