I have a problem networking. Hope you can help me.
Here's what I have,
11 units running on Windows XP
1 unit (w/c I will call PC 1)
1 D-Link DES-1024d 24 port 10/100 ethernet switch
I've done ping tests and the results are baffling.
All units can ping PC 1. That's about it. No unit can ping any other unit in the network except for PC 1. PC 1, on the other hand can't ping any other unit. I've reformatted PC 1 and installed Windows Server 2003 and then to XP and the results are the same.
Internet Access seems to be fine on all units. I've tried the ping tests with and without the Internet Access and the results are the same. I've tried various IP Addresses from 192.168.xx series to 169.254.xx to 10.x.x.x. Nothing seems to work.
One more thing. When I add a network place on 'My Network Places', I can see the computer names of the other units but when I click on nothing shows.
When you ping from some other unit to PC1 the other unit sends a ping request (an ICMP packet) to PC1 and PC1 sends a response to the unit. If this works then it demonstrates that you have basic IP connectivity between the unit and PC1. If PC1 can not ping the unit it can not be because of an problem in IP connectivity and must be because either something is preventing PC1 from sending the request or something is preventing the other unit from sending the response. This sounds like there may be firewall(s) running that are preventing the ping from success. Are there firewalls running on any of this equipment?