Do you have a router that's connected to the cable modem? If not, when you switch the cable modem connection between the PC that's working and the GX150, you'll need to power the cable modem down for about five minutes. Then power the cable modem back up, wait for the connection to the cable system to be established, then turn the GX150 on. Most cable modems "register" the Ethernet (MAC) address of the device connecting to them, and will only allow that device to connect until the cable modem is reset.
If that's not how your PCs connect to the cable modem, please explain in detail how your PCs are connected.
If you want both PCs to connect to the Internet simultaneously, you'll need a router.
Note that in most cases, no software from the cable system vendor needs to be installed on the PCs. TCP/IP should be set up to "obtain an IP address automatically". In most cases, that's all that needs to be done.
Thanks for responding. To eliminaate one source of the problem I didn't use a router. Hooked up each PC straight from the cable modem with the same cable one at a time. Figured I'd solve the problem then switch to a router. Tried shutting the modem down when I switched to the Dell even though I didn't when I hooked up the other one.
I know there is a way to bypass the RR CD and you don't get all the extra garbage but although I'm not a novice I live a couple of blocks down :).
RoadRunner has different ways of "registering" MAC addresses, depending on the age and type of cable system in use. In most cases, the MAC address is stored on the cable modem, and is cleared by leaving the cable modem turned off for about five minutes when switching devices on the LAN side. Perhaps the system in your area is different. The cable system support people should know.
If that's the problem (other PC's MAC address is registered), a router might actually allow you to bypass the problem by "cloning" the MAC address of the PC that works as the WAN MAC address of the router.
Do you have a way of independently verifying that the 3C920 works? When it's connected to the cable modem, do the LEDs on both ends look like there's a physical connection present? If it's connected to the router, does the adapter receive an IP address from the router?
Dell was not hooked through a router. Carried out your instructions and Dell came on line. Shut both PC's and modem down for 10 minutes then hooked both up to a Linksys 5 port router. Powered modem and router then the 2 PC's. Dell came up on line but not the other PC. Went through the process half a dozen times before I could get my main PC back on line but Dell didn't come on line.
OK, that's the problem. The EtherFast 10/100 5-Port Workgroup Switch is not a router. So what you're seeing is that the cable modem will only allow access to one device at a time without first resetting the cable modem, even if both PCs are connected to the workgroup switch.
If the five port switch is the
EZXS55W, you should be all set as far as cabling is concerned. Some router to hub connections require what's called a "crossover cable" for the connection between them. But the EZXS55W is autosensing, so an ordinary CAT5e cable will work.
The switch is theEZX855W. The BEFSR11 is a hard dog to get in a store. Have one coming from off the net. In about a week I should have both PCs up and running. Will let you know. THANKS.
jwatt
4.4K Posts
0
February 24th, 2005 04:00
Do you have a router that's connected to the cable modem? If not, when you switch the cable modem connection between the PC that's working and the GX150, you'll need to power the cable modem down for about five minutes. Then power the cable modem back up, wait for the connection to the cable system to be established, then turn the GX150 on. Most cable modems "register" the Ethernet (MAC) address of the device connecting to them, and will only allow that device to connect until the cable modem is reset.
If that's not how your PCs connect to the cable modem, please explain in detail how your PCs are connected.
If you want both PCs to connect to the Internet simultaneously, you'll need a router.
Note that in most cases, no software from the cable system vendor needs to be installed on the PCs. TCP/IP should be set up to "obtain an IP address automatically". In most cases, that's all that needs to be done.
Jim
Cayenne6
6 Posts
0
February 24th, 2005 10:00
jwatt
4.4K Posts
0
February 24th, 2005 16:00
RoadRunner has different ways of "registering" MAC addresses, depending on the age and type of cable system in use. In most cases, the MAC address is stored on the cable modem, and is cleared by leaving the cable modem turned off for about five minutes when switching devices on the LAN side. Perhaps the system in your area is different. The cable system support people should know.
If that's the problem (other PC's MAC address is registered), a router might actually allow you to bypass the problem by "cloning" the MAC address of the PC that works as the WAN MAC address of the router.
Do you have a way of independently verifying that the 3C920 works? When it's connected to the cable modem, do the LEDs on both ends look like there's a physical connection present? If it's connected to the router, does the adapter receive an IP address from the router?
Jim
Cayenne6
6 Posts
0
February 25th, 2005 08:00
jimw
Dell was not hooked through a router. Carried out your instructions and Dell came on line. Shut both PC's and modem down for 10 minutes then hooked both up to a Linksys 5 port router. Powered modem and router then the 2 PC's. Dell came up on line but not the other PC. Went through the process half a dozen times before I could get my main PC back on line but Dell didn't come on line.
jwatt
4.4K Posts
0
February 25th, 2005 15:00
Which model Linksys do you have? I would expect the symptom you're describing to result from using a hub, rather than a router.
Jim
jwatt
4.4K Posts
0
February 25th, 2005 16:00
OK, that's the problem. The EtherFast 10/100 5-Port Workgroup Switch is not a router. So what you're seeing is that the cable modem will only allow access to one device at a time without first resetting the cable modem, even if both PCs are connected to the workgroup switch.
Here's Linksys's Web page listing all their wired routers. Since you already have a switched hub, you could use the BEFSR11. Its one Ethernet LAN connection would be connected to your hub, as would the rest of the PCs.
Jim
Cayenne6
6 Posts
0
February 25th, 2005 16:00
Cayenne6
6 Posts
0
February 25th, 2005 19:00
jimw
Ok, I"ll get the linksys BEFSR11 and give it a go. Hopefull I won't have to hunt you up again. THANKS for all the help un-screwing me.
Bob Morris Sgt. USMC
Cayenne Team Leader
Alpha Deuce 1st Recon
DaNang 70/71
jwatt
4.4K Posts
0
February 25th, 2005 19:00
If the five port switch is the EZXS55W, you should be all set as far as cabling is concerned. Some router to hub connections require what's called a "crossover cable" for the connection between them. But the EZXS55W is autosensing, so an ordinary CAT5e cable will work.
Jim
Cayenne6
6 Posts
0
February 27th, 2005 07:00
jimw
The switch is theEZX855W. The BEFSR11 is a hard dog to get in a store. Have one coming from off the net. In about a week I should have both PCs up and running. Will let you know. THANKS.
Me