System Error: IP conflict with another system on this network.

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A new home network (which previously worked flawlessly just after connecting
components) gets the error message referenced above. I was working and I felt
like I was a networking expert and then began messing around with the
configuration. I have tried many things, but to no avail. I am new to
networking, but am trying to learn. There are actually 2 small networks in my
home, and I am trying to bridge them together with a LinkSys WET11. Like I
said, It originally worked perfectly .... until I became such an expert. The
error in the Subject Line is what is giving me the main trouble. Any
suggestions?
 
Charley said:
A new home network (which previously worked flawlessly just after connecting
components) gets the error message referenced above. I was working and I felt
like I was a networking expert and then began messing around with the
configuration. I have tried many things, but to no avail. I am new to
networking, but am trying to learn. There are actually 2 small networks in my
home, and I am trying to bridge them together with a LinkSys WET11. Like I
said, It originally worked perfectly .... until I became such an expert. The
error in the Subject Line is what is giving me the main trouble. Any
suggestions?
Click to expand...
Have you checked all computers to see that they all have individual IP
addresses?
Jim
 
No Jim, I am using DHCP and thought that would take care of any IP address
problems, but I will check the IPs on each computer when I get home. Thanks
for your response.
 
Take a look at the network connection>properties>Internet
Protocol(TCP/IP)>properties pane. I suspect one of your machines is not set
to Obtain an IP address automatically. If a client it is set manually the
Linksys router may hand out an address that is already assigned and you will
see this message. It is easiest to set all clients to obtain addresses
automatically.
 
There are 2 small networks in the home. One has 2 computers (an XP Pro and a
Windows 2000 Pro) connected to a Linksys Wireless Router which broadcasts to
a WET11 Linksys Bridge. The bridge is connected to a Linksys 8 point bridge
which in turn is connected to an access point and then another Windows XP
Computer. The access point is used for my Dell Notebook (another XP machine).

All 3 desktop machines are set to obtain IP addresses automatically. I ran
the "ipconfig/all" thing and got the following info:

Network 1:
CHARLES: (XP Pro) IP Adr 192.168.1.100
SubNet mask 255.255.255.0
DHCP Server 192.168.1.1
DNS Servers 192.168.1.1
Default Gateway 192.168.1.1

GABY: (Windows 2K Pro) IP Address 192.168.1.101
Subnet Mask 255.255.255.0
Default Gateway 192.168.1.1

Network 2:
RADIO: (XP Home) IP Address 169.254.49.186
Subnet Mask 255.255.0.0
Default Gateway
DHCP Enabled - Yes
IP Routing Enabled - No
WINS Proxy enabled - No
Autoconfig IP Address 169.254.49.186


The 3rd computer (RADIO) is the one I'm having the problem with (The IP
Conflict message). I see that the configuration on that computer is much
different than the other 2, but I don't know what to do about it. It also is
set to obtain IP addresses automatically. I wonder though about the IP
Routing where it is set to "No" ??? It is also the one connected to the
whole network through the WET11 Bridge. It did work perfectly before I played
with it. All 3 were seeing each other and files could be shared. If I ever
get it fixed, I should keep my mitts off of it from then on. Thanks Jim.
 
The 169 address range is what we call autonet. This is what you get when
the machine can't find a DHCP server and isn't assigned an address. It does
not explain the IP conflict only part of why the Notebook can not connect.
It may be that your access point and router or bridge may have the same
addresses. You will need to take a look at the configuration of those
devices to confirm the settings and change as needed. Sorry that is vague
but the specifics depend on the devices. One quick fix you might try is
setting a static IP address, Default Gateway, and DNS on the Notebook.
Something like IP 192.168.1.110 DNS 192.168.1.1 Gateway 192.168.1.1. With
these setting you can try and ping the Gateway - Ping 192.168.1.1 or the
other machines Ping 192.168.1.101. This will let you know if the notebook
can "see" any of them. If you post a follow-up please let us know which of
these devices is configured as the DHCP server.
 
Jim you are making some headway here, because I changed the IP address,
Gateway, and DNS per your note and the Desktop in the East Patio room
connected at 100 Mbps. The IP Conflict, though, still remains ... just as you
surmised in your last post. That must mean that the conflict must be
associated with the Bridge or Router or Switch. I don't know how to look at
the configurations of those components though. How do you do that? The Bridge
has its own configuration software (In the form of a webbrowser) but it won't
let me connect because of the IP Problem (Catch 22).

This 2nd Network is composed of a Linksys 8 point switch to which are
connected (by CAT5 cabling) the following:

1. An access point (Used for the Notebook)
2. The Computer named RADIO
3. The Wireless Bridge which connects Network 2 to Network 1 by talking to
the Linksys Router

The Router, in turn, is CAT 5'd to the 2 other computers.

At the time the network quit working, there were 2 other "experts" (besides
myself) working on the desktop in the east Patio room (RADIO) and on the
notebook computer (which was connected to the Access Point at the time). We
were all working with the network so it's not surprising that the current
condition exists. The problem must be with the Bridge or the Access point or
the Switch .... I guess. Sorry to be so much trouble. Thank you.
 
I forgot to tell you in my last post that I am not sure which one is the DHCP
Server because the net originally configured itself automatically. On
Network1, it would be the Computer named CHARLES and on Network2, it would be
the one named RADIO. These are the main computers on each network, and for
the net as a whole, it would be CHARLES. Thank you.
 
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