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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-826L => Topic started by: pendodave on January 14, 2014, 08:43:36 AM

Title: using dir826 router with a netgear cable modem
Post by: pendodave on January 14, 2014, 08:43:36 AM

Hi, I am based in the UK and have a virgin media cable connection to the internet via a netgear vmdg280 cable modem.

For years I've used an old linksys wireless router with my vmdg280 cable modem. It all worked fine straight out of the box.
 
Now the linksys is so old it needs to be configured with IE 6 (honest) so decided to replace it with an dlink dir-826L router.
 
The trouble is, it absolutely doesn't work straight from the box. It shows a green light indicating internet connectivity, and the network manager in windows says that it can see some internet connectivity, but there is no access to the internet and no obvious solution.
 
I have powered off both the router and cable modem for 15 minutes and turned them on in the appropriate order.
 
Bizarrely, If I connect the linksys into the cable modem and then plug the dlink into the linksys, it works just fine. Not much of a solution though...
 
Does anyone have any useful insight into what I might do to make this work properly ?
 
Thanks,
 
David.

Title: Re: using dir826 router with a netgear cable modem
Post by: FurryNutz on January 14, 2014, 09:04:20 AM

Link>Welcome! (http://forums.dlink.com/index.php?topic=41537.0)

• What Hardware version is your router? Look at sticker under router.
• Link>What Firmware (http://forums.dlink.com/index.php?topic=47512.0) version is currently loaded? Found on the routers web page under status.
• Are you wired or wireless connected to the router?

Internet Service Provider and Modem Configurations

• If this modem has a built in router, it's best to bridge the modem. Having 2 routers on the same line can cause connection problems: Link>Double NAT (http://www.practicallynetworked.com/networking/fixing_double_nat.htm) and How NAT Works (http://cognitiveanomalies.com/cisco-nat-how-nat-works/). To tell if the modem is bridged or not, look at the routers web page, Status/Device Info/Wan Section, if there is a 192.168.0.# address in the WAN IP address field, then the modem is not bridged. If the modem can't be bridged then see if the modem has a DMZ option and input the IP address the router gets from the modem and put that into the modems DMZ.
  Example of a D-Link router configured for PPPoE with ISP Modem bridged: PPPoE Configuration on Router (http://forums.dlink.com/index.php?topic=56344.msg219023#msg219023)
• 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)
• For DSL/PPPoE connections on the router, ensure that "Always ON" option is enabled.

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.

• Turn off ALL QoS (http://vonage.nmhoy.net/qos.html) or Disable Traffic Shaping (DIR only) GameFuel (DGL only and if ON.) options, Advanced/QoS (http://en.wikipedia.org/wiki/Quality_of_service) 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 Use Unicasting (compatibility for some ISP DHCP Servers) under Setup/Internet/Manual.
• Turn on DNS Relay under Setup/Networking. Link>Finding Faster DNS Addresses using Name Bench (http://forums.dlink.com/index.php?topic=53222.0)
• 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 (http://en.wikipedia.org/wiki/Ipv6) is an option on the router, select Local Connection Only or Disable IPv6 options under Setup/IPv6.
• Set Firewall settings to Endpoint Independent for TCP and UDP under Advanced/Firewall. Enable or Disable SPI (http://en.wikipedia.org/wiki/SPI) to test.
• Enable uPnP (http://en.wikipedia.org/wiki/Upnp) and Multi-cast Streaming (http://en.wikipedia.org/wiki/Multicast) 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 (http://forums.dlink.com/index.php?topic=48695.0) feature. Tools/Time.
• Check cable between Modem and Router, swap out to be sure. Link> Cat6 is recommended. (http://en.wikipedia.org/wiki/CAT6)

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."
6" minimum safe distance between devices.

3rd Party Security Software Configurations

• Turn off all anti virus and firewall programs on PC while testing. 3rd party firewalls are not generally needed when using routers as they are effective on blocking malicious inbound traffic.
• Turn off all devices accept for one wired LAN PC while testing.
• Disable any downloading client software managers, i.e. Torrents or similar.

Web Browser Configurations
What browser are you using?
Try Opera or FF? If IE 8, 9, 10 or 11, set compatibility mode and test again.
Disable any security browser Add-ons like No Script and Ad-Block or configure them to allow All Pages when connected to the router.
Clear all browser caches.
Try turning off these features in Chrome:
Top right corner, little bars for options > Settings > Settings (on left) > Show advanced settings.
Uncheck these:
Use a web service to help resolve navigation errors
Use a prediction service to help complete searches and URLs typed in the address bar
Predict network actions to improve page load performance
Enable phishing and malware protection
mydlink.com Supported Browsers
Internet Explorer 7 or higher (32-bit)
Firefox 12 or higher
Chrome 20 or higher
Safari 6 or higher (Mac OS only)

Title: Re: using dir826 router with a netgear cable modem
Post by: pendodave on January 15, 2014, 08:48:20 AM

thanks for the suggestions.

I think that the nub of the issue is that the cable modem is also a router and that (as far as I know) it cannot be bridged.

That being the case, I either need to get my cable provider to send me a better modem or use the dlink in a different way (as a wireless access point). I will fiddle around with this and may start another thread if I have a problem.

Does seem a bit rum that a dodgy old liksys works perfectly and a brand new dlink doesn't....

Title: Re: using dir826 router with a netgear cable modem
Post by: FurryNutz on January 15, 2014, 08:51:27 AM

Try putting the 826L into the DMZ if the ISP modem has this feature. Disable any firewalls and WiFi if the ISP modem has this.


If any of the suggestions fail, try this:
Turning a router into an AP. (http://forums.dlink.com/index.php?topic=40856.0)

Keep us posted...

Title: Re: using dir826 router with a netgear cable modem
Post by: FurryNutz on March 03, 2014, 11:54:14 AM

Any status on this?  ???