This is a little complicated, so pls bear with me (and do keep in mind that you asked). We have our Internet feed via a microwave link. The "modem" for the feed is either a two port router or feeds into a two port router. (This is 3-4 years old commercial equipment).
One of the two ports goes to a WiFi gateway (this is the Nomadix which you will see below) and access point for our customers.
All of the above is OK.
The other port feeds to a 4 port switch. One port is used by one executive office for INet access. It is also OK.
A second port of that switch feeds the admin office where there are four computers (also all connected via a switch in that office and these computers are connected to the switch with ethernet.) There are two XP Homes and the ME machine (The fourth computer there runs W2k but only accesses the Internet once a month to update the accounting tax files, so we can disregard it for the moment.)
I would again stress that none of these computers talks to each other, so unsure if the different starting group (10. vs 192.) is relevant. They only use the lan to reach the Internet.
The ME machine only exists to act as a sort of file server to our internal TV system. We have a sat feed for normal TV programming and devote one channel to our internal slide show. The slide show actually runs on our website as
www.websitename.com/tvshow.htm so this computer logs onto the Internet to this URL and feeds the "download" into our tv system. This one was the first to suddenly become unable to find the internet. It is now disconnected with the cover off in the exec office where I am setting it up to see if it will somehow reach the Internet from here. (The old turn it off and back on theory of hope!)
One of the two XP machines then decided it couldn't connect to the I/N either.
For this computer, "ipconfig -all" NOW (another person has been fiddling) yields 0.0.0.0 for its IP address and subnet mask, absolutely nothing for the default gateway (not even a zero) and 255.255.255.0 as the DHCP server. Have no idea how to get it back to normal.
For what it is worth, the computer in the exec office that this is being written from, yields from ipconfig:
Host Name . . . . . . . . . . . . : systems
Primary DNS Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : nomadix.com
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : nomadix.com
Description . . . . . . . . . . . : Realtek RTL8139(A) PCI Fast Ethernet
Adapter
Physical Address. . . . . . . . . : 00-50-70-B6-74-B6
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 10.0.0.112
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.0.0.4
DHCP Server . . . . . . . . . . . : 10.0.0.4
DNS Servers . . . . . . . . . . . : 12.145.12.2
12.145.12.3
Now totally confused. How about you?