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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-803 => Topic started by: siddhartha.agrawal on November 05, 2014, 05:35:02 AM

Title: Wifi devices unable to connect to Wifi router after resuming from sleep
Post by: siddhartha.agrawal on November 05, 2014, 05:35:02 AM

I use about 10 wireless devices in my house. Earlier, when I was using D-Link DSL 2750U, all my devices would connect normally, without error. However, when I changed my ISP, I also changed the Wifi router to DIR-803. Now, every once in a while, one or more of my devices will refuse to connect to the wifi router after resuming/waking up from sleep. They will keep showing "Connecting..." to either the 2.4GHz or the 5GHz band SSIDs, but will timeout and stop trying to connect after a while. This is happening on all kinds of devices - iPhone 5S, Nokia Lumia 920, Acer Aspire S7 Laptop etc.

On the wifi router, I can see in the logs several entries like the following, when one of the devices is trying to connect after being woken up from sleep/standby but isn't able to:

Code: [Select]

Wed Nov 5 18:20:08 2014  Got new client [34:C8:03:92:88:CC] associated from BAND24G-1.1 (2.4 Ghz) 
Wed Nov 5 18:18:18 2014  Got new client [34:C8:03:92:88:CC] associated from BAND24G-1.1 (2.4 Ghz) 
Wed Nov 5 18:18:07 2014  Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) 
Wed Nov 5 18:16:11 2014  Got new client [34:C8:03:92:88:CC] associated from BAND24G-1.1 (2.4 Ghz) 
Wed Nov 5 18:16:01 2014  Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) 
Wed Nov 5 18:14:05 2014  Got new client [34:C8:03:92:88:CC] associated from BAND24G-1.1 (2.4 Ghz) 
Wed Nov 5 18:13:55 2014  Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) 
Wed Nov 5 18:13:19 2014  Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) 
Wed Nov 5 18:12:43 2014  Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) 
Wed Nov 5 18:12:07 2014  Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz)

To work around the problem, I either have to restart the wifi router or randomly wake up another device which was working till some time back, which somehow triggers a successful connection in the first one also. For example:

Code: [Select]

Wed Nov 5 18:23:24 2014  DHCP: Server sending ACK to 192.168.0.120. (Lease time = -1) 
Wed Nov 5 18:23:24 2014  DHCP: Server receive REQUEST from 34:c8:03:92:88:cc. 
Wed Nov 5 18:23:24 2014  DHCP: Server sending OFFER of 192.168.0.120 for static DHCP client. 
Wed Nov 5 18:23:24 2014  DHCP: Server receive DISCOVER from 34:c8:03:92:88:cc. 
Wed Nov 5 18:23:24 2014  Got new client [7C:7A:91:D5:32:4D] associated from BAND5G-1.1 (5 Ghz) 
Wed Nov 5 18:23:23 2014  DHCP: Server sending ACK to 192.168.0.177. (Lease time = -1) 
Wed Nov 5 18:23:23 2014  DHCP: Server receive REQUEST from 7c:7a:91:d5:32:4d. 
Wed Nov 5 18:23:23 2014  Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) 
Wed Nov 5 18:22:46 2014  Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz)

This issue is quite frustrating because one can never be sure if a device being used will be usable after sleep.

Is anyone else facing the same issue?

The Wifi Router configuration is as below:

Code: [Select]


General

Time : 11/05/2014 19:08:02 

Firmware Version : 1.03 Tue 26 Aug 2014 







WAN

Connection Type : PPPoE 

Cable Status : Connected 



Network Status : Connected 



       

Connection Up Time : 0 Day 2 Hour 32 Min 24 Sec 

MAC Address : c0:a0:bb:fb:e2:73 

Local address : 115.118.25.19 

Subnet Mask : 255.255.255.255 

Peer address : 192.168.1.224 

Primary DNS Server : 8.8.8.8 

Secondary DNS Server : 8.8.4.4 




LAN

MAC Address : c0:a0:bb:fb:e2:70 

IP Address : 192.168.0.1 

Subnet Mask : 255.255.255.0 

DHCP Server : Enabled 


WIRELESS LAN

Wireless Radio : Enabled 

MAC Address : c0:a0:bb:fb:e2:70 

802.11 Mode : Mixed 802.11n, 802.11g and 802.11b 

Channel Width : 20/40MHz 

Channel : 4 

Network Name (SSID) : Wonderland-2.4GHz

Wi-Fi Protected Setup : Enabled/Configured 

Security : WPA/WPA2-PSK 



Guest Zone Wireless Radio : Disabled 

Guest Zone Network Name (SSID) : dlink-guest
 
Guest Zone Security : Disabled 



WIRELESS LAN2

Wireless Radio : Enabled 

MAC Address : c0:a0:bb:fb:e2:72 

802.11 Mode : Mixed 802.11ac, 802.11n and 802.11a 

Channel Width : 20/40/80MHz 

Channel : 40 

Network Name (SSID) : Wonderland-5GHz

Wi-Fi Protected Setup : Enabled/Configured 

Security : WPA/WPA2-PSK 



Guest Zone Wireless Radio : Disabled 

Guest Zone Network Name (SSID) : dlink-media-guest
 
Guest Zone Security : Disabled 



LAN COMPUTERS

MAC Address, IP Address, Name(if any)
00:06:78:39:a3:69 192.168.0.133   
7c:7a:91:d5:32:4d 192.168.0.177 siddhapc 
78:ab:bb:ab:40:49 192.168.0.157 (unknown) 
34:c8:03:92:88:cc 192.168.0.120 SidLumia920

Title: Re: Wifi devices unable to connect to Wifi router after resuming from sleep
Post by: FurryNutz on November 05, 2014, 02:02:35 PM

Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)

What region are you located?
Was a Factory Reset performed before and after any firmware updates then set up from scratch?

>FW Update Process (http://forums.dlink.com/index.php?topic=42457.0)

Was the router working before any firmware updates?

Internet Service Provider and Modem Configurations

What ISP Service do you have? Cable or DSL?
What ISP Modem Mfr. and model # do you have?
Is ISP Modem/Service using Dynamic or Static WAN IP addressing?
What ISP Modem service link speeds UP and Down do you have?
Check cable between Modem and Router, swap out to be sure. Link> Cat6 is recommended. (http://en.wikipedia.org/wiki/CAT6)
Check ISP MTU requirements, Cable is usually 1500, DSL is around 1492 down to 1472. Call the ISP and ask. Link>Checking MTU Values (http://forums.dlink.com/index.php?topic=53008.0)

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) and Good Neighbour Policy (http://forums.dlink.com/index.php?topic=10634.0)

Ensure the default (dlink) SSID name is changed. Can be anything and not something that's already in use by any neighboring WiFi routers. Under Setup/Wireless/Manual.
What wireless modes are you using?
2.4Ghz and 5Ghz routers: Try single mode G or N or mixed G and N on 2.4Ghz and single mode N or AC on 5Ghz?
Channel Width set for Auto 20/40Mhz
Try setting a manual Channel (http://en.wikipedia.org/wiki/Wireless_channels) to a open or unused channel. 1, 6 or 11. 11 for single mode N if the channel is clear. 13 for EU regions. Try channel 48 or 149 on 5Ghz.
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?
Ensure any devices with WiFi adapter drivers are updated.
Any 2.4Ghz or 5Ghz cordless house phones or WiFi APs near by?
Any other WiFi routers in the area? Link> Use InSSIDer (http://www.techspot.com/downloads/5936-inssider.html) to find out. How many? Use v3, its free.
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, Extra Wireless Protection and HT 20/40 Co-existence if you have it. Also testing with HT20/40Mhz Co-existence enabled will impact results as well. I prefer to use this option OFF. Recommended settings are default. Under Advanced/Advanced Wireless.

Router Placement
Forum User - "Well I feel really dumb. After moving the router away from other electronic devices my speeds are back to normal. Just a heads up for anyone experiencing slow speeds, you might want to move it away from other electronics and see if that helps."
3-6' feet minimum safe distance between devices.
Placement on main level floor and central in the building and WELL ventilated is preferred. Not in basements or closets as building materials, or near by electronics devices could interfere or hinder good signal propagation.
http://www.smallnetbuilder.com/wireless/wireless-basics/31083-smallnetbuilders-wireless-faq-the-essentials

Title: Re: Wifi devices unable to connect to Wifi router after resuming from sleep
Post by: FurryNutz on February 05, 2015, 11:52:19 AM

Any status on this? ???

Quote from: siddhartha.agrawal on November 05, 2014, 05:35:02 AM

I use about 10 wireless devices in my house. Earlier, when I was using D-Link DSL 2750U, all my devices would connect normally, without error. However, when I changed my ISP, I also changed the Wifi router to DIR-803. Now, every once in a while, one or more of my devices will refuse to connect to the wifi router after resuming/waking up from sleep. They will keep showing "Connecting..." to either the 2.4GHz or the 5GHz band SSIDs, but will timeout and stop trying to connect after a while. This is happening on all kinds of devices - iPhone 5S, Nokia Lumia 920, Acer Aspire S7 Laptop etc.

On the wifi router, I can see in the logs several entries like the following, when one of the devices is trying to connect after being woken up from sleep/standby but isn't able to:
Code: [Select]
Wed Nov 5 18:20:08 2014 Got new client [34:C8:03:92:88:CC] associated from BAND24G-1.1 (2.4 Ghz) Wed Nov 5 18:18:18 2014 Got new client [34:C8:03:92:88:CC] associated from BAND24G-1.1 (2.4 Ghz) Wed Nov 5 18:18:07 2014 Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) Wed Nov 5 18:16:11 2014 Got new client [34:C8:03:92:88:CC] associated from BAND24G-1.1 (2.4 Ghz) Wed Nov 5 18:16:01 2014 Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) Wed Nov 5 18:14:05 2014 Got new client [34:C8:03:92:88:CC] associated from BAND24G-1.1 (2.4 Ghz) Wed Nov 5 18:13:55 2014 Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) Wed Nov 5 18:13:19 2014 Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) Wed Nov 5 18:12:43 2014 Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) Wed Nov 5 18:12:07 2014 Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz)
To work around the problem, I either have to restart the wifi router or randomly wake up another device which was working till some time back, which somehow triggers a successful connection in the first one also. For example:

Code: [Select]
Wed Nov 5 18:23:24 2014 DHCP: Server sending ACK to 192.168.0.120. (Lease time = -1) Wed Nov 5 18:23:24 2014 DHCP: Server receive REQUEST from 34:c8:03:92:88:cc. Wed Nov 5 18:23:24 2014 DHCP: Server sending OFFER of 192.168.0.120 for static DHCP client. Wed Nov 5 18:23:24 2014 DHCP: Server receive DISCOVER from 34:c8:03:92:88:cc. Wed Nov 5 18:23:24 2014 Got new client [7C:7A:91:D5:32:4D] associated from BAND5G-1.1 (5 Ghz) Wed Nov 5 18:23:23 2014 DHCP: Server sending ACK to 192.168.0.177. (Lease time = -1) Wed Nov 5 18:23:23 2014 DHCP: Server receive REQUEST from 7c:7a:91:d5:32:4d. Wed Nov 5 18:23:23 2014 Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz) Wed Nov 5 18:22:46 2014 Got new client [34:C8:03:92:88:CC] associated from BAND5G-1.1 (5 Ghz)
This issue is quite frustrating because one can never be sure if a device being used will be usable after sleep.

Is anyone else facing the same issue?

The Wifi Router configuration is as below:

Code: [Select]
General Time : 11/05/2014 19:08:02 Firmware Version : 1.03 Tue 26 Aug 2014 WAN Connection Type : PPPoE Cable Status : Connected Network Status : Connected Connection Up Time : 0 Day 2 Hour 32 Min 24 Sec MAC Address : c0:a0:bb:fb:e2:73 Local address : 115.118.25.19 Subnet Mask : 255.255.255.255 Peer address : 192.168.1.224 Primary DNS Server : 8.8.8.8 Secondary DNS Server : 8.8.4.4 LAN MAC Address : c0:a0:bb:fb:e2:70 IP Address : 192.168.0.1 Subnet Mask : 255.255.255.0 DHCP Server : Enabled WIRELESS LAN Wireless Radio : Enabled MAC Address : c0:a0:bb:fb:e2:70 802.11 Mode : Mixed 802.11n, 802.11g and 802.11b Channel Width : 20/40MHz Channel : 4 Network Name (SSID) : Wonderland-2.4GHz Wi-Fi Protected Setup : Enabled/Configured Security : WPA/WPA2-PSK Guest Zone Wireless Radio : Disabled Guest Zone Network Name (SSID) : dlink-guest Guest Zone Security : Disabled WIRELESS LAN2 Wireless Radio : Enabled MAC Address : c0:a0:bb:fb:e2:72 802.11 Mode : Mixed 802.11ac, 802.11n and 802.11a Channel Width : 20/40/80MHz Channel : 40 Network Name (SSID) : Wonderland-5GHz Wi-Fi Protected Setup : Enabled/Configured Security : WPA/WPA2-PSK Guest Zone Wireless Radio : Disabled Guest Zone Network Name (SSID) : dlink-media-guest Guest Zone Security : Disabled LAN COMPUTERS MAC Address, IP Address, Name(if any) 00:06:78:39:a3:69 192.168.0.133 7c:7a:91:d5:32:4d 192.168.0.177 siddhapc 78:ab:bb:ab:40:49 192.168.0.157 (unknown) 34:c8:03:92:88:cc 192.168.0.120 SidLumia920