#513: asymmetrical upload/download
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Reporter: [EMAIL PROTECTED] | Owner: dyqith
Type: defect | Status: assigned
Priority: minor | Milestone: version 0.9.0 - move to new
codebase
Component: madwifi: driver | Version: trunk
Resolution: | Keywords: upload/download
Patch_attached: 0 |
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Comment (by [EMAIL PROTECTED]):
as a wireless client (SU) I used Atheros 5213 miniPCI cards connected to:
1. WRAP board and MANGA board (scenario 1)
2. standard PC (scenario 2)
operating system was primarily on Debian Sarge 3.1
AP was installed and configurd on the same hardware, but I did testing on
Mikrotik OS 2.9.17 and 2.9.18 (I am also planning on doing testing on
StarOS AP in the future).
Procedures I did step by step:
1. I configured Mktk AP in the AP-brdge mode and defined L2 bridge between
eth0 and wlan0 (freq/mode: 802.11g - 2.452Ghz)
2. connected AP to a 3-port Mkrt router (the same level of Mktk OS); on
the second port of the router I connected my server
3. configured SU with Debian Sarge 3.1 and installed madwifi-ng driver on
it
4. added arp-proxy bridge functionality on SU (between eth0 and ath0)
5. connected my laptop (with installed Windows XP and RedHat Linux on it)
through the bridged network to a testing server
6. installed and tested ftp transfer, scp transfer and Mkt bandwidth test
(between my laptop and server)
7. When I experienced a transfer problem I put Mkt SU (client) insted of
Debian Sarge client/SU and transfer was symmetrical (approximately the
same upload/download) so my thought was that I didn't properly configure
madwifi-ng driver and started playing with distance parameters
ack/slottime (athctrl), iwconfig parameters like: sens, frag, rts ... but
without results (those tests were done on 802.11g mode)
8. I repeated the same test on 802.11a mode on the distance of ~3km with
configured long distance parameters for madwifi (athctrl command) and got
the same results (download: ~7-8Mb, upload: ~2Mb)
What I also experienced as a problem - using "iwconfig ath0 rate 24M auto"
... I tried to cap transfer to 24M and lower on the SU/client side but
madwifi client picks up the highest rate all the time.
I believe that will help you.
Thank you,
D.
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Ticket URL: <http://madwifi.org/ticket/513>
MadWifi <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity
