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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-655 => Topic started by: sohai on June 13, 2010, 07:09:46 AM

Title: very low speed with dir655 and dwa-125
Post by: sohai on June 13, 2010, 07:09:46 AM

Hi everyone, hope you can help me on this.

I got a dir655 and previously used a belkin wireless adapter, but i was not happy with the speed and it was a G only adapter so i went and bought a dwa-125, thinking that i would be able to get nice N speed and since both router and adapter are d-link product i expected everything would just work.

Unfortunately the first time i hooked up the dwa-125 i only see a max speed of 64mbps which is not much better than my previous belkin adapter, so i went to the configuration page and changed the channel width from 20 mhz to 20/40 auto, and voila....135mbps (note that i'm using g and n mixed mode). I was happy for a moment.

But then i noticed something very weird, when i start transferring files, the speed will drop to a ridiculous 13 or 5 mbps, and even when i am not transferring sometimes i could see it dropped to this speed. This is even worse than my previous wireless adapter. Note that my sister's laptop (which i guess is using some intel wireless) can get very good signal and constant 130mbps speed before and after i changed to 20/40mhz mode. The signal strength is also stronger with her laptop. I feel disappointed.

Here is my configuration of the router:
Firmware Version : 1.30WW,  2009/07/10

802.11 Mode :Mixed n and g
Enable Auto Channel Scan : yes
Wireless Channel : 2.437ghz -CH6
Transmission Rate : best (automatic)
Channel Width :auto 20/40Mhz

security mode:wpa personal
wpa mode:auto(wpa or wpa2)
cypher type:aes
Group Key Update Interval:3600

Firmware for dwa-125:DWA-125_A2_v1.31

Does anybody know what is wrong with my config? or it is simply a defect of the wireless adapter, I'm seriously not impressed by the performance.

Title: Re: very low speed with dir655 and dwa-125
Post by: thecreator on June 13, 2010, 07:24:12 AM

Hi sohai,

http://www.dlink.com/products/?pid=DIR-655&tab=3 (http://www.dlink.com/products/?pid=DIR-655&tab=3)

Click on the above link. Then click Works With.

DWA-125 does not work with the D-Link DIR-655 Router.

Do the same with the DWA-125.

http://www.dlink.com/products/?pid=DWA-125&tab=3 (http://www.dlink.com/products/?pid=DWA-125&tab=3)

Title: Re: very low speed with dir655 and dwa-125
Post by: sohai on June 13, 2010, 07:49:46 AM

WTF??? Sorry for the language, but seriously, this is so lame if they are not compatible. Can somebody confirm this? I mean aren't they supposed to work if they are compliant with the wifi standard? Let alone the fact that they are both dlink product? How come a belkin or intel adapter work but a dlink adapter doesn't??? It's just....unbelievable