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Cable Modem & Hub

Last response: in Networking
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September 11, 2003 10:39:27 PM

At home I used a Net Gear 10 port hub to connect two PCs to our DSL modem. Plug in, turn on, tune out. Now my daughter is away at college and she has a cable modem. She's running WinME on a Dell L1000 1 GHz Celeron. Her roomie is running a Mac. Model unknown. Only one of them can be on line at a time. If the one logs on, the other gets booted off. She is running Norton 2000 Anti-virus and Zone Alarm. Any suggestions as to why this is happening? Could it be caused by her roomie using a cable with a connector on it (two shorties joined together with a two-way RJ45)? Or is it just Time Warner pocking us over?

I know enuff to be dangerous. :tongue:

More about : cable modem hub

September 12, 2003 1:25:49 AM

don't have enough details, what is the physical layout of the college room lan? ie there a router, 2 wall plates, what?

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jlanka (. .)
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September 12, 2003 5:46:02 AM

(two shorties joined together with a two-way RJ45)?
wtf are you talking about? an rj 45 splitter?

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September 12, 2003 10:32:57 PM

Coax cable line comes into appartment and connects to cable modem. Coax then goes out to TV. Cable modem sits in daughters room with Cat 5 patch cord running from modem to Netgear hub. Cat 5 goes from Port 1 to daughter's PC. From Port 2 goes another Cat 5 to roomie's room with RJ45 connector/splicer/joiner/double female hoozit joining two shorter cables. No router, only hub.

I know enuff to be dangerous. :tongue:
September 13, 2003 8:32:56 PM

Unless the cable modem has NAT capabilities (unlikely), you are seriously confusing the cable modem.
The ISP probably only provides one IP per cable modem.
That IP address is given to the computer currently using the cable modem.
No two computers on the same network can have the same IP address, so when two try to access the same IP address, one gets kicked.

To fix the problem:
First, you either need a router or you need to use internet connection sharing on one computer.
Second, get rid of the splitter and run two longer cables connected to their own socket.

If you have any other questions, I'm sure someone here will be able to answer them.

Pain is the realization of your own weakness.
September 14, 2003 7:55:27 AM

yup, go for the router with an integrated switch, they are fairly cheap, great for all kinds of networking, useful and y2k compliant, hehe.

and about Time Warner...yes, they are :( 
Beat the heat with the USB-Powered Fan :wink: <P ID="edit"><FONT SIZE=-1><EM>Edited by TomaHawK on 09/14/03 09:57 AM.</EM></FONT></P>
September 15, 2003 2:19:47 AM

uhhh can you run a mac off a windows pc using ics? if you can I learned something new today.
September 15, 2003 7:58:50 AM

not sure what exactly you are on about, but yes, you can!

Beat the heat with the USB-Powered Fan :wink:
September 16, 2003 11:21:26 PM

Wasnt sure if you could network a mac with a windows pc using ics. Now I know you can. thats all.
September 19, 2003 10:24:34 PM

Thanks, guys!! Now all I have to do is pick up a good router. How does the Linksys BEFSR11 stack up? It has one port. They also have a four port unit, but each PC has its own printer.

I know enuff to be dangerous. :tongue:
September 19, 2003 11:55:15 PM

I would get the four port one. Shouldnt be that much more and will allow room for future expantion.
BEFSR41 I think is 4 port. Can also get one with a firewall built in.
September 21, 2003 9:15:26 AM

Or get the D-Link 604 one, has an easy to setup webbased interface.

Beat the heat with the USB-Powered Fan :wink:
!