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Connecting two PC's and a cable modem via crossover cable

Posted on 2004-10-09
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Last Modified: 2013-11-09
I want to connect my pc (which is connected to the internet) to my dads pc via crossover cable
so he can use the broadband connection and we can share files.  I am having problems.



My pc
Pentium 4, 3ghz, 1gb ram, Running XP Home sp1
Connected to NTL broadband cable modem via usb connection
1 ethernet card linked to one end of crossover cable

In network places there are two items under network connections:
Cable Modem
PCI fast ethernet adaptor

My dads PC

Pentium 4, 1.5ghz, 512mb ram, Running XP Pro sp1
1 ethernet card connected to the other end of the crossover cable

In network places there is one item under network connections:
PCI fast ethernet adaptor.


On my pc I gave the ethernet adaptor an ip of 10.0.0.1 and subnet mask 255.0.0.0
On my dads PC I first told it obtain ip address automatically but this made the
machine take around 3 minutes to boot and I was still unable to connect to my pc,
so I gave it and ip of 10.0.0.2, subnet 255.0.0.0.

I made sure both pc's were on mshome, I had no firewalls running.
I run "setup home or small office network" on my pc, everything went fine
I run the same on my dads pc.  I was able to get the internet of both computers
and share files between both computers.

I restarted the computers today and I am no longer able to share, ping or even see the other pc.
I don't know what I'm doing wrong.  This type of thing keeps happening and as I don't know how
XP sets up the computers to share the internet connection i have no way of understanding what
goes wrong when I restart the computers.

What am I missing and what does XP do in network config to enable my dads pc to use my internet connection? Im hopeing to get the connection going manually with xp's "setup home and small office network".


Any comments appreciated as this is about the 10th time Ive tried to connect boths pc's.
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Question by:mwd__
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14 Comments
 
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Expert Comment

by:Dabas
ID: 12268335
Hi mwd__:
I would suggest you do NOT run setup home or small office network on BOTH computers.
Only on the one that is connected to the internet properly! (Yours)

As far as I rmemeber the wizard suggests creating a floppy disk which then is used to configure the second computer.

Also...
If you go to your Network Connections window and right click the connection that connects you to your ISP, Click on properties, then advanced.
There is a checkbox there that enables others to share the connection to the internet with you.

Dabas
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Author Comment

by:mwd__
ID: 12268404
I have previously /.enabled others to share the internet connection, I didnt think about only using the wizard on the first pc and will give that a go.  Does anyone know what the wizard actually does?  Ive been successful in using the wizard to get a connection between both pc's its just the next day I turn the pc on I can no longer use the connection, if I knew what to look for in the network settings I might be able to see whats happening but I don't know what the wizard actually does.
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LVL 8

Expert Comment

by:MarkDozier
ID: 12269395
Personally I would buy a simple linksys router with a switch built in. Coonect the router to your broadband run the config wizard. plug in the computer to the switch and you both have access and he is not dependent on your machine being up for his access.
Cleaner easier and you don't have to mess with ICS.
If you want ot share files just be sure Simple File Sharing is installed.
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LVL 5

Expert Comment

by:abu_deep
ID: 12269522
On your dad computer try to set the gateway address to 10.0.0.1
In order to use internet connection sharing ?
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Expert Comment

by:abu_deep
ID: 12269530
u have to check the cross over cable between u and your fathe..
also post us the ipconfig /all output here…just go to start---run type cmd <enter> and type ipconfig /all …..
in both computers
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Author Comment

by:mwd__
ID: 12270669

I do want to buy a linksys router with a switch built in but I dont know which one is right for my cable modem, its an ambit modem from ntl

Cross over cable checked and connected properly, I had previously used the same setup with 2 other computers with no problems.

ipconfig /all - main computer connected to net

Windows IP Configuration

        Host Name . . . . . . . . . . . . : XP1
        Primary Dns Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Unknown
        IP Routing Enabled. . . . . . . . : Yes
        WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Home Network:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : SiS 900 PCI Fast Ethernet Adapter
        Physical Address. . . . . . . . . : 00-06-4F-09-E5-F7
        Dhcp Enabled. . . . . . . . . . . : No
        IP Address. . . . . . . . . . . . : 192.168.0.1
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . :

Ethernet adapter NTL:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : USB Cable Modem 351000
        Physical Address. . . . . . . . . : 00-02-8A-63-84-DF
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 80.7.160.59
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 80.7.160.254
        DHCP Server . . . . . . . . . . . : 62.255.64.20
        DNS Servers . . . . . . . . . . . : 194.168.8.100
                                            194.168.4.100
        Lease Obtained. . . . . . . . . . : 10 October 2004 13:49:12
        Lease Expires . . . . . . . . . . : 11 October 2004 22:16:55


Second computer (my dads)

Windows IP Configuration

        Host Name . . . . . . . . . . . . : XP2
        Primary Dns Suffix  . . . . . . . :
        Node Type . . . . . . . . . . . . : Mixed
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . : mshome.net
        Description . . . . . . . . . . . : SiS 900 PCI Fast Ethernet Adapter
        Physical Address. . . . . . . . . : 00-06-4F-09-E5-F8
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 192.168.0.94
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 192.168.0.1
        DHCP Server . . . . . . . . . . . : 192.168.0.1
        DNS Servers . . . . . . . . . . . : 192.168.0.1
        Lease Obtained. . . . . . . . . . : 10 October 2004 13:49:44
        Lease Expires . . . . . . . . . . : 17 October 2004 13:49:44

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LVL 2

Expert Comment

by:smconsult
ID: 12270835
So long as your cable modem has an ethernet connection, any of the Linksys cable/DSL routers will work for you.  Since you have two PCs you are trying to network, you'd probably be best with the BEFSR41 version, or if you want a more robust firewall, the BEFSX41 version.  Either model will do what you are looking to do.

Connect the cable modem to the Linksys box, then both PCs to the Linksys box, and your network will be complete.  Leave DHCP turned on on the router, and set your PCs up to get their networking info via DHCP, and you won't have much to configure.

The only hitch I've ever seen with the Linksys boxes and cable modems (and it may just be our local company's high quality equipment :-) that is involved) is that when making a connection, it's important to turn on the cable modem first and let it initialize the connection to the cable company, *then* turn on the Linksys.  Otherwise, the cable modem doesn't understand that the Linksys is even there.  Otherwise, we've set up a number of people with the BEFSR41 with no problems.

Good luck, and let us know if you get this configuration, and how it goes.

Sean
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Expert Comment

by:abu_deep
ID: 12272119
Dhcp Enabled. . . . . . . . . . . : Yes!!!

Try to assign ip address for the Second computer (your dads) statically
Just go Go to control panel->click network and internet connections->click network connections->double click lan connection->then click properties->on the internet protocol (tcp/ip), general tab select  use the following IP address to use a static IP address
type 192.168.0.2
Default gateway 192.168.0.1..


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LVL 27

Expert Comment

by:Dabas
ID: 12272501
mwd__:
I agree with abu_deep

No need for router. The gateway of  your Dad's computer should point to your computer, (it does!) and his IP address should start with 192.168.0. (it also does)

Just to check that your cable is connected properly, try to ping your computer from your Dad's

Start -> Run -> cmd
In the command prompt type: Ping 192.168.0.1

Let us know if the Ping is successful and we will take it from there

Dabas
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Author Comment

by:mwd__
ID: 12272829
The ping request keeps timing out, its strange because when I initially set it all up the ping was successful, its like each time my PC is turned off something somewhere changes and the computers can no longer connect at all, and if they do manage to then I get a login box pops up with guest grayed out and asking for a password.  I have set up a administrators account on both computers with the same name and password but its not accepted.  If i run the network setup wizard again then I'm no longer asked for a password and instead told the computer is not accessible and i might not have permission.
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LVL 27

Expert Comment

by:Dabas
ID: 12273043
mwd__,
I suggest you start again from scratch:
Uninstall TCP/IP from both computers, reboot then rerun the wizard on your computer and use the floppy to install on your dad's.
Hopefully that will fix the problem

Dabas
0
 

Author Comment

by:mwd__
ID: 12325707
Nothing has worked, its seems the problem is with the ethernet cards, they are sis 900 and refuse to acknowledge my broadband connection when done with an Ethernet wire.  I currently have two Ethernet cards in my PC, I tried the other one and it worked perfectly so it does seem to be the sis 900 cards.  They were both purchased from different places but both seem unable to have contact with my cable modem
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