Cable Modem and Router Problem - Help

[nsxownzme]

hi, I just swicthed from DSL to Cable. My DSL used an RJ45 interface, an ethernet cable. My new Cable modem uses USB. It also has an ethernet jack on the back.
I just took out the USB cable and used an ethernet cord. So I put the ethernet cord from the modem to the router. Then I added another cord from the router to my pc. No internet connection is detected. Although it worked with my DSL line.. whats wrong? Why will it work with DSL and not cable? Please help, thanks.

 

[Noodlygod]

It could be a couple of things, first I'd say check to make sure you're using DHCP rather than a static ip address (for your computer, not the router) Also make sure you've got the cable from the modem going into the WAN port on the router.

If you're using DHCP and the cables going to the WAN port do this:

Click Start
Go to Run
Type "command" and hit enter.

Now you've got a DOS box.
Type "ipconfig" and hit enter.

What does it say your ip address is?

If it's something like 192.168.0.X or 192.168.1.X then you're leasing your ip from the router, so you know that connection is good.

If all that turns out alright open up a web browser and type 192.168.0.1 or 192.168.1.1 as the address and hit enter. One of those is probably the address of your router so you should be getting a login box. The default username/password is usually one of the following:

Name: Admin no password
Name: Admin Password: admin
no name Password: admin
no name no password.

Once you've accessed your routers setup page look for "status" and check to make sure the router is leasing an ip from the cable company. (In my area this is normally 4.4.4.X or something similar. I don't know what it would be for you)

If you aren't getting an IP then you know the connectrion to/from the cable modem is bad. Try another cable or try restarting the modem/router. Good luck!-Noodly

 

[nsxownzme]

Nothing shows up in ms-dos when I have the ethernet cord in, only when it's using usb. wtf? help?

 

[Noodlygod]

So when you've got the ethernet cord going from the cable modem directly to the PC nothing shows up in msdos? (when you run ipconfig)

It should show something even if it's just 0.0.0.0

If it is showing just zero's and the cable is hooked directly into the modem (skipping the router) then I'd check to make sure the device is installed and working. Right click on my computer, go to properties look for a hardware tab or hardware monitor or device manager or something like that. Look for any yellow circles with black exclamation points in them. If you see one, see if it's on an "ethernet device" or on your specific network card. If you see this it means either the driver isn't loaded, the driver has a problem, the device can't start, the device can't communicate or the device has a resource conflict.

Another thing you can try is releasing/renewing the ip address. First make sure the ethernet cable is plugged directly into the cable modem from your computer. (and make sure you have a light on your network cord) Go back into dos, type "ipconfig /release" and then "ipconfig /renew" That'll re-lease an ip address from the cable company. If you're running 98/ME you'll probably have to restart. Let me know how it goes -Noodly.

 

[nsxownzme]

Nothing, nothing, nothing! Nothing at all, not even from the modem to the pc. Please keep helping... I appreciate everything.

 

[nsxownzme]

This is what it looks like, there's absolutely nothing, not even 0.0.0.0

 

[Noodlygod]

That's extremely peculiar. But I now know what the problem is.. you don't have a network card. At least windows isn't recognizing it. I'd go into control panel and "add new hardware" let it scan and see if it picks up an ethernet adapter. If it does see if it finds the drivers, If it doesn't you'll have to track them down. Has anyone been inside the case lately? I ask because it's possible that the network card isn't fully seated. (maybe it wiggled loose) Just so you know what you should be looking for heres a pic of my device manager:

If the card isn't loose or it isn't detected by the Add Hardware wizard then I'd say it's gone bad and you should get another one. -Noodly

 

[nsxownzme]

Ok, now I can tell we're on the right path. Yes my PC was tampered with by the cable guy. You're pretty good at this.. heh.
So I'm trying to install the drivers.. I used the website and the original CD.. but I get an error.
By the way, my lan card is on board, it's part of my motherboard. It's not a PCI card.
And what's DHCP?

 

[The Dark Elf]

Originally posted by nsxownzme
And what's DHCP?

(Dynamic Host Configuration Protocol) – This is a protocol that lets network administrators centrally manage and automate the assignment of IP Addresses on the corporate network. When a company sets up its computer users with a connection to the Internet , an IP address must be assigned to each machine. Without DHCP , the IP address must be entered manually at each computer . DHCP lets a network administrator supervise and distribute IP addresses from a central point and automatically sends a new IP address when a computer is plugged into a different place in the network.DHCP uses the concept of a ‘lease’ or amount of time that a given IP address will be valid for a computer. Using very short leases, DHCP can dynamically reconfigure networks in which there are more computers than there are available IP addresses


google is great

 

[Noodlygod]

Alrighty, at this point I'd say it's probably gone bad for some reason. Either that or theres a setting in BIOS that isn't right but I can't think of any setting that would cause a device to not start. (If it's disabled in BIOS it shouldn't be detected at all.) Do you know what the cable guy did when he went inside your computer? If he knew you were going to be using the USB cable I don't see why he'd need to get in there. Likewise if you have an onboard NIC he shouldn't have to go inside the computer for anything. What motherboard do you have?

 

[nsxownzme]

Its a Gigabyte GA-7VT600-L
Well, I'll throw in one of my spare ethernet cards. Hopefully that'll work.. if it's a generic card, can I use any drivers?

 

[Noodlygod]

If it really is generic XP should have the drivers for it. (I wouldn't reccomend using the generic "Generic Ethernet Adapter" drivers just because it's messy.) The most common are realtek and netgear so if it's either of those finding the drivers will be a snap. I'll search around and see if I can find anyone else having problems with their network and this board.

 

[nsxownzme]

Hey Noodlygod, it's got to be my modem, I'm positive.. its a Motorola SB5100 SURFboard cable modem. I don't know wtf is up, but I'll take a pic of the backside of it.. the cable guy didn't leave a manual or anything ...

 

[Bastion]

ok nsxownzme, I know your problem man, through away the USB CABLE. the usb function of the modem is for poor saps that cant aford a NIC or have a old AT style case with no IRQ's left. plus you cant use cat5 & USB at the same time.

ok first off...
#1 make sure your router is useing DHCP obtain ip automaticaly NOT PPOE which is used for DSL.

#2 the sb5100 should have 4 solid green lites and a amber lite blinking. the four green lites indicate the modem is synced up with the UBR {ISP router} the amber lite blinking means the router and modem are talking.

#3 whats the wan's IP address on the router, make sure your ISP doesnt make you reg the MAC address of the device. ( can you switch pc's on the modem and its able to get online? }

#4 type in the browser 192.168.100.1 that will let you into the webflash inside the modem and give you signal to noise SNR and other upstream & downstream power levels.

$5 make sure there is NO bridges setup in your network connections window..controle pannel\netwok connections\local area connection. all you should see is local area connection and maybe a 1394 connection { firewire for camera's external HD's}

sorry if i posted something somebody else typed its late and im tired, the biggest things i wonna know is your ISP and the wan address of the router. hope this helped goog luck.

 

[nsxownzme]

#1. I dont know if it is, but I think so.

#2. Appears to be ''talking.''

#3. I dont know, how do I get the WAN address, is it important? I can't connect the pc directly from the Modem with an Enthernet Cable.

#4. Appears with the Ethernet cable, fully operational with the USB.

#5. No bridges.

PS: Thanks for the help. I Ran into this problem while installing the router's software.. I'm pretty sure it has something to do with this, but I'm not sure.. UPnP. Here's a snapshot of the error.



edit: I only had the usb and the RJ45 plugged in at the same time for the picture. I know you cannot use them simultaneously.

 

[nsxownzme]

Ok, forget all I said in the last post. Looks like I got windows to recognize my NIC, thanks to resetting my BIOS. However.. now that I have the pc connected directly to the modem I get this problem..
It may not be a problem, just needs to be adjusted, I just dont know how to.
Anyways, you can IM me via AIM @ nsxownzme OR msn @ [email protected] Thanks!


PS I cant get on the net when using the ethernet cord.

 

[nsxownzme]

I GOT IT!! IT WAS MY FIREWALL!! THANKS GUYS!!!