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[maple_leafs_67]

Yesterday I purchased two DIR-850L routers to "refresh" my home network.  For the most part the installation and configuration went fine, but I ended up with a peculiar symptom:

   • When my iPad's WiFi is associated with the DIR-850L Router's SSID and I try to connect to certain domains (e.g. live.com) my iPad browser and email client fail to connect to those domains. 
   
Other Observations
   • If I change my iPad to associate with the second DIR-850L's SSID (set up as an Access Point) I can connect to the problematic domains without issue
   • If I try to connect from my Windows 7 PC, which has a wired connection to the Router, I can connect to the problematic domains without issue
   • I tried connectivity tests from a second iPad Mini associated with the Router's SSID and saw similar problems
   • Other domain connection tests from iPad browser: I can connect to microsoft.com, dlink.com.  I can't connect to apple.com, rogers.com.
   
Hardware:
   • [Router] D-Link DIR-850L router, ver B1, firmware 2.02
   • [Access Point] D-Link-DIR 850L router, ver B1, firmware 2.01
   • [Gateway] Hitron CGN3 Rogers gateway

Topology:
   • Gateway is set to bridge mode
   • Router's Internet port is connected to Gateway
   • Router's firmware was upgraded to 2.02 during set up
   • Access Point has DHCP shut off and is assigned a fixed IP address (above Router's DHCP range)
   • LAN port of Access Point is connected to LAN port of Router using CAT5 cabling
   • Router and Access Point are assigned different SSIDs
   
I'm stumped as to why this might be happening. 

I'd appreciate any ideas to help me troubleshoot this problem.

Thanks.

[FurryNutz]

Link>Welcome!

• What Hardware version is your router? Look at sticker under the router case.
• Link>What Firmware version is currently loaded? Found on the routers web page under status.
• What region are you located?

Router and Wired Configurations
Some things to try: - Log into the routers web page at 192.168.0.1. Use IE, Opera or FF to manage the router. Besure to log into the Admin account on the router.

• Turn off TrueGigaBit Routing under Setup/Internet/Manual for those routers that have this feature for testing.
• Turn off ALL QoS or Disable Traffic Shaping (DIR only) GameFuel (DGL only and if ON.) options, Advanced/QoS or Gamefuel.
• Turn off Advanced DNS Services if you have this option under Setup/Internet/Manual or under Setup/PARENTAL CONTROL/Set to>None: Static IP or Obtain Automatically From ISP.
• Enable or Disable Use Unicasting (compatibility for some ISP DHCP Servers) and test under Setup/Internet/Manual. Disable may help with speed performance on higher speed ISP services.
• Turn on or off DNS Relay under Setup/Networking. Link>Finding Faster DNS Addresses using Name Bench and input new DNS addresses under Setup/Internet/Manual.
• Setup DHCP reserved IP addresses for all devices ON the router. Setup/Networking. This ensures each devices gets its own IP address when turned on and connected, eliminates IP address conflicts and helps in troubleshooting and maintain consistency for applications that need to connect as well as mapped drives.
• Ensure devices are set to auto obtain an IP address.
• If IPv6 is an option on the router, select Local Connection Only under Setup/IPv6.
• Set Firewall settings to Endpoint Independent for TCP and UDP under Advanced/Firewall. Enable or Disable SPI to test.
• Enable uPnP and Multi-cast Streaming under Advanced/Networking. Disable uPnP for testing Port Forwarding rules. Enable IPv6 Multi-cast Streaming for routers that have a Media Server option. Disable IPv6 Multi-cast Streaming if IPv6 or Media Server is not being used.
• Turn off WISH, and WPS under Advanced.
• WAN Port Speed set to Auto or specific speed? Some newer ISP modems support 1000Mb so manually setting to Gb speeds can be supported by the router. Advanced/Advanced Networking/WAN Port Speed
• Set current Time Zone, Date and Time. Use an NTP Server feature. The DST setting is only needed in the NA region. Tools/Time.

Wireless Configurations
Links>Wireless Installation Considerations and Managing Signal Congestion and Good Neighbour Policy

• Ensure the default (dlink) SSID name is changed. Ensure that different SSID names are used between each WiFi 2.4/5Ghz radios. Can be anything and not something that's already in use by any neighbouring 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 or try 20Mhz only.
• Try setting a manual Channel 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, so you might want to try TPIK only or Auto TPIK and AES.
• What iOS is loaded on the iPads?
• Any 2.4Ghz or 5Ghz cordless house phones or WiFi APs near by that maybe causing interferences?
• Any other WiFi routers in the area that maybe causing interferences? Link> Use InSSIDer to find out. How many? Use v3, its free.
• If you have any of these options, Try turning OFF or ON Short GI, 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

What is the distance between the 1st and 2nd 850L?

What happens if you swap the 850Ls around? Problem still happens?
Try reloading v2.01 FW on the 1st router and test. Please follow this for downgrading:
FW Update Process

[FurryNutz]

Any status on this? Please provide feedback to the questions and try the suggestions.

Yesterday I purchased two DIR-850L routers to "refresh" my home network.  For the most part the installation and configuration went fine, but I ended up with a peculiar symptom:

   • When my iPad's WiFi is associated with the DIR-850L Router's SSID and I try to connect to certain domains (e.g. live.com) my iPad browser and email client fail to connect to those domains. 
   
Other Observations
   • If I change my iPad to associate with the second DIR-850L's SSID (set up as an Access Point) I can connect to the problematic domains without issue
   • If I try to connect from my Windows 7 PC, which has a wired connection to the Router, I can connect to the problematic domains without issue
   • I tried connectivity tests from a second iPad Mini associated with the Router's SSID and saw similar problems
   • Other domain connection tests from iPad browser: I can connect to microsoft.com, dlink.com.  I can't connect to apple.com, rogers.com.
   
Hardware:
   • [Router] D-Link DIR-850L router, ver B1, firmware 2.02
   • [Access Point] D-Link-DIR 850L router, ver B1, firmware 2.01
   • [Gateway] Hitron CGN3 Rogers gateway

Topology:
   • Gateway is set to bridge mode
   • Router's Internet port is connected to Gateway
   • Router's firmware was upgraded to 2.02 during set up
   • Access Point has DHCP shut off and is assigned a fixed IP address (above Router's DHCP range)
   • LAN port of Access Point is connected to LAN port of Router using CAT5 cabling
   • Router and Access Point are assigned different SSIDs
   
I'm stumped as to why this might be happening. 

I'd appreciate any ideas to help me troubleshoot this problem.

Thanks.