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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-655 => Topic started by: johnny_h on August 14, 2013, 02:20:35 PM

Title: DHCP not working anymore for wired computers but works on WIFI devices
Post by: johnny_h on August 14, 2013, 02:20:35 PM

We had alot of power outages in the last week and it seems like my DIR-655 has given up. It works fine for wifi clients I can connect to the router and obtain a DHCP address but none of the LAN ports seem to be working. I can't get an IP from my ISP(WAN) and when I connect wired computers they can't receive an IP from the router as well. I have tried a hard reset but no change.

Is their anything else I should try? I was also desperate when the problem happen and I upgraded the firmware to the latest over WIFI(ya I know, not suppose too). Even if I assign a static IP to the wired computers within the network range they can't connect to the router config page.

Title: Re: DHCP not working anymore for wired computers but works on WIFI devices
Post by: FurryNutz on August 14, 2013, 02:27:11 PM

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.
• What region are you located?
• Has a Factory Reset been performed?

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?

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.
• 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 (http://en.wikipedia.org/wiki/SPI) to test.
• Enable uPnP and Multi-cast Streaming under Advanced/Networking.
• 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 cables between Modem and Router, and PCs. swap out to be sure. Link> Cat6 is recommended. (http://en.wikipedia.org/wiki/CAT6)

Any external network switches being used?