Internet Works Only Without Router

[Wicked2010]

I have a strange problem.

If I plug my computer straight to the broadband modem, the internet works fine and I get a green light on the back of my network card. However, I need to share the internet connection with another computer. I have a d-link 604 router that works just great with my other computer. There are no dead ports on the router as I have tested them all with the current computer that works with the router. Also, I have tested all of my cables and know they work as well. For some reason, if I plug my computer into the router I get an orange light (no longer that green light that I got when plugging it straight to the broadband modem)... so there is some kind of negotiation problem between my onboard NIC and the router. I have tried downloading the latest drivers for the network card and that hasn't helped. I have also tried to play with the port speed on the NIC and that yields strange results. Only at 10/Half duplex will I get the green light on the back of the NIC, but it still doesn't get an IP address from the router. The computer is set for DHCP and so is the router (just like my other computer that works) but it still returns with no IP address. If I run an "ipconfig /all" I see it is set with an "Autoconfiguration IP Address of 169.254.*.*" (can't remember the whole address).

I'm guessing the orange light when plugging into the router is the problem. Windows says "Limited or No Connectivity" and fails to get an IP address although the machine is set for DHCP as is the router.

I've very tech savvy so please if anyone can post any kind of explanation, no matter how hardcore you get I'll understand.

I'm currently at a loss and may resort to purchasing a PCI network card if I cannot figure this out.

Hopefully it doesn't come to that.

 

[PELarson]

What I usually recommend is that you turn off your PC. Unplug the router and cable modem. Wait about 30 minutes. Plug the cable modem back in and wait about 5 minutes. Plug the router back in and then start the PC. This usually works for Roadrunner.

 

[Wicked2010]

No offence, but that sounds like terrible advice.

Waiting 30 minutes... etc... I lol'ed at that response.

 

[spidey07]

are you using homemade cables? That can be a source of severe frustration. Just because a cable works on one computer doesn't mean that it is good.

Also make sure you NIC is set to autonegotiate speed and duplex and that you get link lights on the router and the NIC.

oh - and the whole wait 30 minutes thing is standard when troubleshooting broadband. It's the time it takes for addresses to age out. You can't approach network troubleshooting like other methods - there's a time element involved.

 

[kevnich2]

Do the other PC's work ok going through the router for their internet?

 

[MrBond]

Originally posted by: Wicked2010
No offence, but that sounds like terrible advice.

Waiting 30 minutes... etc... I lol'ed at that response.

That's a pretty standard way to solve your problem, but since you don't want to wait, you have two options.

1) Call your broadband provider, tell them you've got a different computer you want to hook to the modem, and have them manually clear out the old MAC address and let it pick up the new one.

2) Go into the router and have it spoof the MAC address of the computer the broadband modem works with. Check the instructions for your router for how to do that, it's usually fairly simple.

 

[JackMDS]

The Modem is probably 10Mb/sec., and thus negotiates well wit the card.

So, I would say try another card.

:sun: