CISCO WRT310N 300MBPS won’t work if WEP Security is used

Asked By fnmaristela 20 points N/A Posted on - 09/27/2011

Hello Everyone,

 

I have a WRT310N with a wireless Lenovo Laptop (windows 7) with wireless a/b/g/n and an older Desktop (windows XP) with a wireless B adapter (Linksys WUSB11). My Lenovo laptop can only get 54mbps of wireless speed while my windows XP gets 11mbps(i think this is limited using my wireless B adapter) using WEP 64bit password. According to my Cisco-Linksys router box, the speed can go up to 300mbps using WPA2. When i used WPA2, my windows XP desktop won't connect wirelessly. 

 

Your Response is highly appreciated.

 

Francis

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• Question Category: Wireless Networking

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Answered By James Hoffman 0 points N/A #82617

CISCO WRT310N 300MBPS won’t work if WEP Security is used

HI,

WLAN Standards a/b/g support different data rates. And so  WLAN Cards are build to support one of those data rates. Now a days WLAN cards support all data rates. 108 MBPS and 300MBPS WLAN Cards are also available in market. 

Your Lenovo Laptop has a Broacom Legacy WLAN Card, it wont support above 54MBPS. I'm not sure about WLAN card of your desktop PC. However I can tell you, that in Wireless environment data rates are proportional to signal strength. I think your desktop PC is located a bit far from your Wireless Access Point. Or its also possible that your WLAN Card only supports data rate up to 11 MBPS.

You are using a nice modern AP supporting 300 MBPS, you should use 300MBPS supporting WLAN Cards as well.

Regards,

James Hoffman

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• Posted on - 09/29/2011
• Question Category: Wireless Networking

Answered By Mmatt 0 points N/A #82618

CISCO WRT310N 300MBPS won’t work if WEP Security is used

There could be a few reasons why your XP desktop is unable to connect when your network is set to WPA2.

The most apparent one would be that your Linksys WUSB11 adapter only supports WEP for security according to the specifications page here:

http://homedownloads.cisco.com/downloads/WUSB11v4_ug.pdf

This being the case, if you'd like to maximize the performance of wireless N, you need to get a better WLAN card, preferably a wireless N adapter.

Also make sure that your Windows XP already has KB893357 installed or that your Windows XP installation has been updated to Windows XP Service Pack 3 for it to be able to support WPA2 security.

The KB893357 update can be downloaded here:

http://www.microsoft.com/en-us/download/details.aspx?id=1974

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• Posted on - 10/19/2011
• Question Category: Wireless Networking