Michael,

Your physical configuration of your network is fine.  It sounds to me as if @home is not allocating two addresses to your cable modem.  (I am assuming that @home is using DHCP to dynamically assign addresses vs. giving you static IP addresses to hardcode to your NICs)  You indicated that when you run winipcfg, you have unique addresses on the two machines.  Did you do this when both machines where powered up?  If yes, within winipcfg perform a Release All and then a Renew All on each machine one after the other.  Try browsing on both machines.  I suspect it will still not work.  The @home network "sees" only your cable modem.  When a PC in your house powers up, the network card, set to dynamically obtain its IP address, sends a request for an IP address to the DHCP server through the cable modem.  The DHCP server sees that your cable modem is asking for an address and then sends one.  If the DHCP server is setup to only allow a single address to remain active on your cable modem, when a second PC on your network powers up and requests an IP address, the DHCP server deactivates the first address and sends a second.  The first PC, therefore, is no longer recognized and cannot browse.  As you can see, this appears to be what is happening in your case.  On the other hand, if the DHCP server was in fact setup to provide your cable modem two addresses, the second PCs request for an IP address would not deactivate the first address.  I would suggest calling @home and verifying the fact that they are allocating two addresses to your cable modem (and make sure they refund the time when they charged you for two addresses but only provided one).

Please feel free to provide more information or ask questions if required.

Steve Polatas

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Date:    Wed, 11 Oct 2000 23:33:58 -0400
From:    "Michael A. Wosnick" <[log in to unmask]>
Subject: My Cable Modem won't share!

I am new to this and started my first network today. I have a Linksys 5 port
EtherFast HUB (not router), a desktop PC and a notebook. My modem is a
Motorola CyberSurfer on the @home system. The Desktop is running Win98, and
the laptop is running Win98SE. ICS is NOT installed.

Instead, I went the two IP route, and I purchased a second IP from @home.
When I do a winipcfg, each computer shows up with its unique host name, and
different IP addresses, so the 2 computers are being seen by @home as
distinct entities.

I have plugged the modem into the uplink port of the hub, and each of the 2
computers into other ports (neither in port 1 which is shared with the
uplink).

If I fire up the desktop, everything works fine. Internet is OK. VPN to my
workplace is OK.

However, the laptop cannot access the internet.

If I reverse the process, i.e. fire up the laptop, it accesses the internet
just fine, including my wife's VPN (a different one) to her workplace (a
different one).

Then the desktop PC is unable to access the internet.

So, each machine works perfectly on its own, but locks out the other one
from sharing the modem connection.

How do I get these two machines to share the modem, which of course was the
whole point of the exercise?

All help appreciated.

Michael
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