List of servers ... not currently available

[dhamments]

Another newbie question - sorry to be a bother!

I just added a new pc to a three pc home network that was working perfectly. I have a 4 port hub used to share a cable modem internet connection. All 3 machines are running winxp pro (sp2). All 3 machines can access the internet.

2 of the original machines can still see each other on the network and share files/printers - the new machine cannot see the other 2.

The new machine (let's call it P4) has the same workgroup name, which I've changed on all 3 pcs - mshome

ipconfig /all shows a different default gateway and an IP address that's not in the same range as the other 2 pcs.

Steps I've taken
I've added NETBUI to all three machines - no luck, so removed it
I've renamed the workgroup from its original tzone to mshome - no luck
I've I've uninstalled the NIC from the new pc and let PNP reinstall it - no luck
I've called my ISP and they say there's no way to force the cable company to assign new IP addresses, subnet masks and default gateway parameters to my home network


This must have happened to others - any help would be greatly appreciated!

Thanks, dhamments

 

[dk87]

If the IP address on the new machine is 169.254.x.x, that means that this new machine is not receiving an address from your DHCP server (if you have one).

1. How are you assinging IP addresses?
2. Are you using any type of NAT or PAT device?
3. Have you tried manually setting an IP address that is within the same range as the other two?
4. Is the network connection disabled?
5. Is the cable good? Port on the switch?

 

[GlenJohnson]

Csn the machines ping each other? Post an ipconfig /all on the seperate machines so we can see the difference. I'm thinking dk87 is on the right track, but we need more info. Good luck.

Glen A. Johnson
If you're from the Illinois, Wisconsin or Florida area, check out Tek-Tips in Chicago IL
To get the best answers to your questions, check out faq950-5848

 

[dhamments]

All three machines are DHCP enabled - so my ISP is assigning addresses. I don't know what a NAT or PAT device is, but I don't think I'm using one. I tried setting an IP address, but lost my internet connection. The new machine (P4) can't see the other two machines, but they can see each other and can share files and printers. All 3 machines have internet access through a 4 port hub into the cable modem which is attached to the hub.

All 3 machines can ping each other.

Here are the results of IPconfig /all

Machine 1 (P4) (which can't see the other two)

IP 24.36.107.228
SNM 255.255.254.0
DG 24.36.106.1

Machine 2 (which can see and share with machine 3)

IP 24.57.81.31
SNM 255.255.240.0
DG 24.57.80.1

Machine 3 (which can see and share with machine 2)

IP 24.57.87.73
SNM 255.255.240.0
DG 24.57.80.1

I note that the subnet masks and default gateways for machines 2 and 3 are the same, but different for machine 1. Aren't these values assigned by my ISP's DHCP server? How can I force all 3 machines to be in the same range?

Thanks for helping!!!!
dhamments

 

[GlenJohnson]

I noticed your subnet mask and default gateway are different. This is probably your problem. Why are they different?

Glen A. Johnson
If you're from the Illinois, Wisconsin or Florida area, check out Tek-Tips in Chicago IL
To get the best answers to your questions, check out faq950-5848

 

[dk87]

As far as TCP/IP is concerned, machine 1 is not even on the same network as the other two! Also, ISP's don't normally assign such a large range (with a 20-bit subnet). Using the subnet mask 255.255.240.0, your valid addresses are 24.57.80.1 to 24.57.95.254. Again, I find it very hard to believe that an ISP would assign a subnet of 4094 hosts! All three of your addresses resolve to various hosts at cgocable.net, and I'm guessing that they ran out of hosts in your area and added a second scope.

 

[dhamments]

Obviously I need to get some new addresses assigned. Machine 1 is new on my home newtwork, but the other two machines have been on the same network for years. I called Cogeco and they said they can't force new addresses; but suggested I take my cable modem into their office in Windsor and exchange it for a new one. Does that make sense?

Any suggestions for resolving this problem???

Thanks everyone!
dhamments