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IP conflict

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5 replies

by skat

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In a two computer network (nic in each) connected to a 3Com Gateway to share internet and printing, the IP settings in the host are: Host 192.168.2.2 subnet mask 255.255.255.0, default Gateway 192.168.2.1. Client 192.168.2.3, subnet and Gateway same as Host, both computers boot up with an IP address conflict warning.

LAN properties, status shows Connected. From Client, I can ping to all three IP addresses. From Host I cannot ping to these three addresses. In TCP/IP properties, Client for MS Networks, File and printer sharing for MS Networks and TCP/IP are all checked.

I know very little about networking. Above setup was working fine for over a year until new drive and Win 2000 upgrade to SP4. Since then, LAN is inoperative. I need a step-by-step troubleshooting process but have been unsuccessful in getting this kind of help. I'm a newbie at networking even at this simple level.

5 replies

by skat

Above status was as of yesterday. Today, it is possible to ping Client IP addresses but not Host addresses, reversing the situation described above. I don't know what caused this.

by curacao_dejavu

Difficult, there doesn't axist a step by step solution as you wish there would be.

check the configuration in details again !!

ipconfiguration for pc 1:
ip: 192.168.2.2
sub:255.255.255.0
gateway: 192.168.2.1
dns: 192.168.2.1

ipconfiguration for pc 2:
ip:192.168.2.2
sub:255.255.255.0
gateway:192.168.2.1
dns:192.168.2.1

in the w2k computer you can go to; start, run; eventvwr and see with which ip and pc you have a conflict with.

Second option, if the 3com gateway supports DHCP enable it and let the clients obtain the ip automatically (if you feel comfortable doing that anyway)

in all scenarios work with only 1 pc at the time, have the other turned off. when that one is working turn on the second one and troubleshoot from their.

Leopold

by skat

This doesn't help. I don't want to enable DHCP. The system worked fine without it. Working with one system doesn't work either because each system apparently has the settings I included in my original posting.

by jrentschler

Have you thought about ICS (Internet Connection Sharing)? With it, your internet connection would be configured for one of your pcs, which would act as both a default gateway and sort of a DHCP server. The main, or gateway, pc would have an IP of 192.168.0.1 and the client would get 192.168.1.2. Your printing should still work just fine if you're sharing a printer off of one of the pcs. If it's a network printer, change it's IP to the 192.168.0.x subnet and you're golden. For instructions on ICS, check the help files for you operating system.

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