Upload affects Download ??

Discussion in 'Networking Issues' started by awallin, Nov 6, 2004.

  1. awallin

    awallin Guest

    I'm on a cable modem connection and ran some tests to a server at work with sftp:
    one single upload: ca 15 kb/s
    one single download: ca 500 kb/s or more
    (talk about assymetry!)

    one upload and one download:
    up ca 15 kb/s
    down ca 15 kb/s !!

    What is going on ? as soon as I cancel the upload the download ramps slowly back up to 500kb/s

    This happens both with and without my wrt54g between my cable modem and my computer... (I'm connecting to the wrt54g with a cable _not_ wlan)

    Witht he wrt54g inbetween I tried a few different QoS settings in HyperWRT but they did not help.

    There are reports floating around the net that this thing could be solved with traffic shaping using m0n0wall.(high priority ty ACK packets etc.)

    Is there firmware for the wrt54g that does the same thing ?

    I know there is wondershaper but it would require installing openwrt "by hand" and I'm not a linux guru... I would prefer something ready made with a web interface.

    thanks for any replies,

  2. Esquire

    Esquire Mesquire Staff Member Member

    The behaviour is normal for asymmetric DL/UL bandwidths, and, as you've probably deduced, it has nothing to do with your router. There have been many online discussions and articles on asymmetic DL/UL behaviours since the dawn of broadband as the effect is larger than when using dial-up - I heard about the problem even before I had my first broadband connection. Here's an example: http://homepage.ntlworld.com/robin.d.h.walker/cmtips/downup.html. It includes some good suggestions on what can be done to minimize the problem, which I find very useful on my current ADSL (6Mbps DL/625kbps UL) network/connection.
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