D-Link Forums
		The Graveyard - Products No Longer Supported => Routers / COVR => DIR-655  => Topic started by: david1012 on July 05, 2013, 06:31:03 PM
		
			
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				I have been having an off and on connection problem with certain wireless devices to my DIR-655 rev B 2.07NA.  Wired seems to work all the time.  Certain wireless devices, particularly Windows 7 machines, are sometimes not able to connect to the wireless network, which is set up as WPA2, AES.  I noticed that I am usually able to connect to the guest network, which I set up as Auto, TKIP or AES.  I changed my main wireless to Auto, TKIP or AES and the problem seems to have gone away.
 
 Does this make sense?
 Am I sacrificing anything, particularly security-wise, by going this route?
 
 Thanks,
 David
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				Link>Welcome! (http://forums.dlink.com/index.php?topic=41537.0)
 - Was a Factory Reset performed before and after any firmware updates?
 
 
 Wireless Configurations
 Links>Wireless Installation Considerations (http://forums.dlink.com/index.php?topic=48327.0) and Managing Signal Congestion (http://forums.dlink.com/index.php?topic=53228.0)
 - Ensure the default (dlink) SSID name is changed. Can be anything and not something thats already in use by any neighboring WiFi routers. Under Setup/Wireless/Manual.
- What wireless modes are you using?
- 2.4Ghz Routers only: Try single mode G or N or mixed G and N?
- 2.4Ghz and 5Ghz routers: Try single mode G or N or mixed G and N on 2.4Ghz and single mode N on 5Ghz?
- Channel Width set for Auto 20/40Mhz or try 20Mhz only.
- Try setting a manual Channel (http://en.wikipedia.org/wiki/Wireless_channel) to a open or unused channel. 1, 6 or 11. 11 for single mode N if the channel is clear.
- What security mode are you using? Preferred security is WPA-Personal. WPA2/AES Only. Some WiFi adapters don't support AES (http://en.wikipedia.org/wiki/Advanced_Encryption_Standard), so you might want to try TPIK (http://en.wikipedia.org/wiki/Temporal_Key_Integrity_Protocol) only or Auto TPIK and AES. 
- What wireless devices do you have connected?
- Any cordless house phones?
- Any other WiFi routers in the area? Link> Use InSSIDer (http://www.metageek.net/) to find out. How many?
- If you have any of these options, Try turning OFF or ON Short GI (http://www.smallnetbuilder.com/wireless/wireless-features/30969-what-do-80211ns-optional-features-mean-for-you), WLAN Partition, HT 20/40 Co-exhistance and Extra Wireless Protection if you have it. Recommended settings are default. Under Advanced/Advanced Wireless. 
- Enable WMM Enable (http://forums.dlink.com/index.php?topic=50738.0) Under Advanced/Advanced Wireless.