The Graveyard - Products No Longer Supported > DGL-4300

Can you help with a DGL-4300?

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I have a wierd problem with my 4300. I have a basic setup, mostly all setting at defaults apart from turning wireless off and setting a static WAN port IP address.

This was all working fine untill I lost connection to it, no ping and dhcp failing to finction from the router also.

After alot of trial and error and resets later I can confirm this happens once the WAN port is physically connected, it will test the speed of my connection.. try to refresh the page and display "Please try again" and thats it.. no connection.

I only noticed this a day after upgrading the firmware to 1.8 from 1.7. Could this be the culprit - Can I safely flash version 1.7?

I hope you guys can give me some insight here - I know this is an old router but I pulled it out of the box recently to get internet access where I am temporarily living.

I ran a search on the forums and found this post in the "legacy" section of the forum:

I apologize if I have posted this in the wrong place.



* What region are you located?
* Are you wired or wireless connected to the router?
* Was a Factory Reset performed before and after any firmware updates then set up from scratch?
* 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?
* What ISP Modem service link speeds UP and Down do you have?
* 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 and 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.
* Check ISP MTU requirements, Cable is usually 1500, DSL is around 1492 down to 1472. Call the ISP and ask. Link>Checking MTU Values
* For DSL/PPPoE connections on the router, ensure that "Always ON" option is enabled.
Has the ISP service changed from PPPoE to DHCP by chance?
Can you MAC Clone the router to the PC that your working with?
If you disconnect the router from the ISP modem, can you access the routers web page with the PC still?

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

* 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 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
* 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.
* Ensure devices are set to auto obtain an IP address.
* If 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 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. Tools/Time.
* Check cable between Modem and Router, swap out to be sure. Link> Cat6 is recommended.

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 PC while testing.

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.

Web Browser Configurations
What browser are you using?
Try Opera or FF? If IE 8 or 9, set compatibility mode and test again.
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

Maybe someone can review your router settings with you using Link> teamviewer if your interested. Its safe and secure.

There is a v1.9 that was the last known. I don't know about going back to a prior version. DGL series were kind of sketchy on regressing FW. It's possible.

Thanks for that info Furry, I have done all suggested from other threads - Nothing has helped so far.

I have opened up the unit for a quick visual inspection - No bad caps, no visual dry solder joints.

I updated to version 1.9 of the firmware and I had "some" success. All was working for around 10 mins but could not access the router at all.. wierd. After the 10 minutes it all went dark (no connection).

After it all went dead I removed the WAN cable and rebooted. All was fine, reset to factory defaults, connected wan cable - Instant disconnection - Cannot ping, access the config page. Nothing.

Only other thing to try is to test it out on a different ISP modem if possible, friend or families place or check the power out put of the power adapter and see if there could be a bad voltage there.

If you leave the router going and not connected to the ISP Modem, can you still gain access to the routers web page after 10-15 mins?  ???

Seems like this could possibly be a HW issue. You could try going back to v1.7 if you can keep the router going.

Yes without connecting the WAN port the router will stay on for days without issue.

I feared it may be a hardware issue.

I have gone back to 1.7 where I started and after connecting the WAN port the routers enters a constant reboot state.

Updating to 1.8 I have the issue if the router going dark as soon as cable connected.

Updating to 1.9 I was able to access the web for 10 mins or so but nothing after that.

I do love this router it's a shame to have it fail like this.

Do D-Link still make the Gamer Lounge series?


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