Hello,
I am currently getting rather poor wifi performance.
The configuration is a RouterBoard 532A (400MHz MIPS board) running 2.6.19.2/Kamikaze 6529.  The router performs excellently over Ethernet.

The wireless card is this Atheros-based card:
http://www.titanwirelessonline.com/Prod … LMAG%2DS23

The antennas are two 5.5 dbi omnidirectional antennas.

The system is running a WPA/WPA2 access point with three stations: one Ralink USB station and two Intel 3945abg stations.  All are indoor within 20ft. of the AP. They all report strong signal strength, yet performance is rather poor.  Transfer speeds are often slow and the clients often go into a state where they still appear to be connected yet no longer function.

I have tried all sorts of different channels...

However, the card itself reports rather low signal quality:
ath0      IEEE 802.11g  ESSID:"Erased"  Nickname:""
          Mode:Master  Frequency:2.417 GHz  Access Point: 0
          Bit Rate:0 kb/s   Tx-Power=8 dBm   Sensitivity=0/3 
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key: [2]   Security mode:open
          Power Management:off
          Link Quality=43/94  Signal level=-52 dBm  Noise level=-95 dBm
          Rx invalid nwid:11099  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

The

I have no problems with the same clients running a Broadcom-based AP.

Any ideas?

Hello,

I've got the same problem. Me too, I've got a rb532a and a WLM54AG wireless card.  The router performs excellently over Ethernet but the WiFi slows down incredibly.  Sorry fdl4, I can't help you, but I just wanted to say that your problem isn't isolated.

Thanks,

t.

That's the same card as mine....

Have you tried anything else?  I'm not sure if I had the same issues in RouterOS or not.

I have an Intel 2915 card I'll be trying eventually, and I'm going to try the 802.11a functionality soon as well.

If I don't find a solution I'll eventually try the same card in an old laptop or buy another atheros-based card.

I also have this problem.

When I download from internet via ethernet : 2.4mo/s
via wifi : 200Ko/s

:S

If someone can help us !

I'm using a wrt54g v2.2 @ Openwrt 0.9 and a Macbook Pro.

(Last edited by OzGoR on 6 Apr 2007, 16:37)

Well I have a similar problem, BUT while it does happen on machines as different as Wrap-2E (x86) and WGT643U (Broadcom) both having Atheros cards, I have also seen similar this same "going into a state where they still appear to be connected but no longer function" on ethernet.  The 634U had an Atheros card on it, but it was not being used, and running from a LAN port to the WAN it would run for say 30 minutes, then stop for 10 and back for an hour and gone for 5.  No pattern, but faily random.  The box was not running anything more than it had to.  There is another forum item option about this but it got no reply.

The problem appears to be isolated to receiving:

          RX packets:482470 errors:0 dropped:0 overruns:0 frame:4108767

I took the antennas from an old wrt54g, plugged them into the Atheros card, and put the Atheros card in an old notebook.
I connected the card to a wrt54g five feet away and got:
Link quality: 56/94, Signal level=-37 dBm, Noise level=-93 dBm

I'm not sure what these mean: Rx invalid nwid: 3339 (from iwconfig)
RX packets: Frame: 16636 (from ifconfig)
tihs is after connecting.

The connection appears to be fine.  Are those normal values? The link quality drops to 30 when I unplug the antennas.

(Last edited by fdl4 on 10 Apr 2007, 00:57)

As explains David Goodenough (here: http://forum.openwrt.org/viewtopic.php?id=11921) it could be a diversity problem and in fact I've got only one connector on my wireless card. I will try to fix this parameter in /etc/config/wireless file and check if the performance increase or not. Thank to David Goodenough for his experience share.

regards,

t.