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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-655 => Topic started by: rmmahara on January 07, 2009, 08:22:35 PM

Title: Unable to resolve IPs when wired to router
Post by: rmmahara on January 07, 2009, 08:22:35 PM

Hi all,

A bit about my setup:  I've got a 655 wired to my cable modem (dynamic IP).  I have two wireless PCs (surfing fine), along with a wireless gateway.  Lastly, I have a PC that can either be wired to my gateway or to the 655.  This is the PC I'm having trouble with.

I have this PC wired to the 655.  It worked fine for a while, but then suddenly it was unable to surf via IP.  I can do an NSLookup and resolve the IP address of websites, and I can also surf by IP.  However, once I try to surf by DNS, the PC is unable to resolve IP addresses. 

At first I thought this was a problem with the PC, so I formatted it and reinstalled Windows from scratch.  While I was doing this, I had the PC wired to my gateway.  When I installed Windows, everything was fine and I could surf no problem.  So I took the pc back to the router and connected it directly - immediately I was unable to surf again.

I've checked the router and nothing seems amiss.  I've also tried upgrading the firmware from 1.11 to 1.21 - nothing seems to help.  Even if I reset the router to factory settings, the PC can't surf.

The PC is set to connect via DHCP.  I've tried setting the router's IP (192.168.0.1) as the primary DNS server.  I've also tried manually entering the IP of my provider's DNS servers into my TCP/IP config.  All results in the same - I can resolve IPs via NSLookup from a command prompt, but I can't surf.

I've tried disabling all firewall software on the PC but it doesn't help.  However, if I bring it back downstairs and connect it to the gateway, it works again.

Does anyone have any clue as to what might be happening?

Title: Re: Unable to resolve IPs when wired to router
Post by: EddieZ on January 08, 2009, 11:58:18 AM

Do you have "DNS relay" enabled or disabled? Try dis- or enabling that setting and enter your modem's (gateway) IP as the DNS server or (even better) enter the OpenDNS servers (208.67.222.222 and 208.67.220.220) manually. Make sure your Windows TCP IPv4 settings are set to  DHCP / Automatically get DNS.