Troubles moving from direct broadband connection to behind router

[HardcoreRobot]

Im helping two friends share a Roadrunner connection in their apt. Previously, the line was running directly into one of their computers. I hooked up connection to the router and connected both the comps to the router. On the computer that previously had not been connected I set the IP address (192.168.1.1), the subnet (255.255.0.0), and the gateway (192.168.1.1), and the DNS servers (of RR). Worked perfectly. The other computer however, is giving me tons of problems.

First off, it refused to even acknowledge a LAN connection (it would say network cable unplugged) if it was not connected directly to the modem. Once I manually set the speed to 100 instead of autosense, it began to recognize a connection to the router. Or at least it stopped saying there was no cable connected. I assigned the same settings to this computer as the other (except IP of course), yet this one refuses to work. It cannot ping the router.

What I have tried:

I have tried all ports on router (Linksys BFESR41) - always works on one comp, never on the other.
I upgraded routers firmware.
I upgraded the network adapter drivers.
I uninstalled all network protocols and adapters and reinstalled.

While the router can be a DHCP server, neither computer would recognize a DHCP server at 192.168.1.1 and both resorted to assigning themselves bogus AutoConfiguration IPs of the 169. . . variety. Does anyone know wth is going on? RR gave my friend a CD that hacked IE 6.0 to be a RR edition IE 6, and changed all sorts of settings. Could the problems be residual from that? There is no way to uninstall that either...

Someone please help! I went over to set up one computer, which I did, but now the one that was working wont! Any suggestions would be greatly appreciated.

 

[burnedout]

Check the routers IP address. More likely than not, it should be 192.168.1.1

Then, set one computer at 192.168.1.2, the other at 192.168.1.3. Keep the subnet mask the same. Gateway the same.

Check the NIC on the computer that's giving you problems. Remove and reinstall TCP/IP. Try a different cable to the router.

As far as the DHCP problems, check the NIC duplexing on both boxes under the adapter properties. Instead of Autosense, you might try 100 mb full duplex or various combinations.

 

[HardcoreRobot]

Originally posted by: burnedout
Check the routers IP address. More likely than not, it should be 192.168.1.1

It is, im sure.

Then, set one computer at 192.168.1.2, the other at 192.168.1.3. Keep the subnet mask the same. Gateway the same.

Will this be any different from having them at .115 and .116?[/quote]

Check the NIC on the computer that's giving you problems. Remove and reinstall TCP/IP. Try a different cable to the router.

Have tried 5 different cables which I know work. Have reinstalled TCP/IP as well as the adapter itself (not physically, but the drivers)[/quote]

As far as the DHCP problems, check the NIC duplexing on both boxes under the adapter properties. Instead of Autosense, you might try 100 mb full duplex or various combinations.

This is an interesting one... The computer that is giving me problems refuses to acknowledge connection to the router when it is set to autosense or 100 full duplex. when i set it to 100 (non duplex), it recognizes a network connection, but still will not ping or access router. What effect does duplex have on the connections with the router. The computer that is working is running autosensed full duplex 100. The questionable network card is a Netgear 311 btw. Thanks for your suggestions, let me know if you think of anything else.

 

[SwampsterFL]

Your LinkSys Router is your DHCP server . . . and it already is set to 192.168.1.1, so quit trying to override it.

Set TCP/IP in both computers to default everything . . . automatic detect, no gateway, no DNS . . . nothing. Leave your NIC's at their default settings.

Address you router by typing 192.168.1.1 into Internet Explorer. This should bring up a security window from your router. Leave the username blank and type admin as the password. This should get you into your router.

Beyond this, it would be helpful to know what operating system you are using as that affects the way the rest of it configures.

 

[HardcoreRobot]

Originally posted by: SwampsterFL
Your LinkSys Router is your DHCP server . . . and it already is set to 192.168.1.1, so quit trying to override it.

Set TCP/IP in both computers to default everything . . . automatic detect, no gateway, no DNS . . . nothing. Leave your NIC's at their default settings.

Address you router by typing 192.168.1.1 into Internet Explorer. This should bring up a security window from your router. Leave the username blank and type admin as the password. This should get you into your router.

Beyond this, it would be helpful to know what operating system you are using as that affects the way the rest of it configures.

When everything is set to autodetect, neither computer (both running Win 2k) sees a DHCP server and both assign themselves autoconfiguration IP's.

 

[foofoo]

hi,
if you has pppoe or other ethernet drivers installed for your initial setup before you were behind the router, definitely remove them. you should be on straight tcp/ip. hope this helps.
good luck

 

[SwampsterFL]

OK, now we're making progress in that we know that you have a problem associated with your OS. The instructions I gave would have been more appropriate to Win98.

Right-click on Network Neighborhood and remove all connections except Add New Connection. Do this on both systems, then reboot both (cold boot) with the modem and router all connected and your network physically complete.

Ge into each system and create a new connection, allowing it to find things itself and use default settings. When these connections were configured originally, you had a different path to things outside the computer, and these settings aren't readily changed in the GUI boxes you have from within the OS . . . which is why this is the easiest way.

You should then be able to access each other, and then do your Internet connection with the wizard like you normally would.