Wired internet stopped working - can still connect to router

[randalotto]

Out of nowhere, my wired internet stopped working.

I am hooked up to a router, which is still working fine with every computer that is hooked up to it via wireless.

Also, I can still connect to the router and to other computers on the network. The only thing I can't do is access the internet.

I've restarted everything, tried switching to DHCP instead of the static IP I use (when I tried that, I couldn't even connect to the router anymore...)

I have also verified that my laptop can connect to the internet via a wired connection through the router. I have no idea what to do. Any advice?

[cmnorton]

There is a lot of information here.

If your connected via DSL, shutdown your modem for at least one minute.

Concentrate on making sure your wireless router can provide addresses, static or otherwise, to your clients and that each client can connect and all can stay connected simultaneously. Each client should be able to access the router's config using http. That would be a good router connectivity test.

This could be due to the address range you've configured in your router config or something else.

If wired does not work and wireless does, it could be hardware or the position in your switch.

[randalotto]

Like I said, the wired connection worked when i hooked up my laptop.

I tried pulling up the router config page on several computers at once, and it seemed to work. Also, my three roommates don't seem to have any problem connecting simultaneously.

I feel like it has to be something with my ubuntu computer, but I don't know what - I didn't change any settings that I know of. It just suddenly stopped working.

[Witling]

Do you use an email engine as well as a browser? Are both down?

[randalotto]

Nothing is working. Email is down, messaging, etc... No internet for me

[cmnorton]

Like I said, the wired connection worked when i hooked up my laptop.

I tried pulling up the router config page on several computers at once, and it seemed to work. Also, my three roommates don't seem to have any problem connecting simultaneously.

I feel like it has to be something with my ubuntu computer, but I don't know what - I didn't change any settings that I know of. It just suddenly stopped working.

How many people are using this router?

If many clients are simultaneously connected through this router and you had a static connection before, it sounds like someone got your ip address. You'd need to set to DHCP, and then reboot, or run dhclient as sudo. Like I said, try connectivity to the router. If you have to, use a roomate's good connection and check your config. How many connections can be granted, and can your DSL handle that many. Maybe I'm offbase, but I think these are good things to check.

[randalotto]

Well, I'm pretty confident that no other computer got the IP address. I have it set up as a media server, and I can still connect to it on my local network. I'll give your suggestions a shot though - couldn't hurt...

[louieb]

..and I can still connect to it on my local network. ...

sound like a DNS problem What does that show. Try making your router the primary and secondary DNS server.

Also something else to check your router may have the ability to reserve an IP address based on a computers MAC address. If so then you can set the computer to use DHCP and let the router give it the same address every time.

[randalotto]

I tried cmnorton's advice, and still have no internet... I really don't get why this just started out of nowhere.


EDIT: I changed the settings to "Automatic DHCP (Addresses Only)" and changed the DNS to my router's IP. Voila - internet restored.

Thank you for the help!

[randalotto]

Turns out my enthusiasm was short lived. It worked for a while, then I had to keep running sudo dhclient every 10 minutes or so to get it to work at all.

Now, it's back to not working at all, no matter what I try...