Invalid IP Address.

G

Glenn Mielke

Within our home network, we have two computers. We are
running a WINXP PRO system that has no problems, and
WINXP HOME that pulls an invalid IP address. We use an
Addtron AEF-1000 hub and that worked perfectly fine until
last weekend. At that point the HOME puled an invalid
IP. We could not correct the problem and upon contacting
our service provider, we could not find a solution. At
that point we reinstalled HOME on the PC and everything
worked fine. The HOME PC was disconnected from the
netwrk Friday and began pulling an invalid ip address
again. I have searched the Knowledge Base and tried
everything possible. Please give some advice that cane
correct this problem. We have run every virus scan
possible. We have connected another WINXP HOME computer
to the same cable and connection and it has worked. We
have run a Fluke tool through the lines and it was good.
Any advice that you can give would be greatly
appreciated. Thank you for your time and attention.
 
M

Marc Reynolds [MSFT]

Hi Glenn,

What is this invalid IP address? Is it an APIPA address? Have you tried
replacing the network card on the failing client?

Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.
 
G

Glenn Mielke

Yes, I installed a new Linksys network card. The ip
address should be 64.X.X.X. It is reading a 169.X.X.X.
Please contact me via email if will be easier to work this
out.

Thank you so very much for you help.

Glenn.
 
Q

Quaoar

Glenn said:
Within our home network, we have two computers. We are
running a WINXP PRO system that has no problems, and
WINXP HOME that pulls an invalid IP address. We use an
Addtron AEF-1000 hub and that worked perfectly fine until
last weekend. At that point the HOME puled an invalid
IP. We could not correct the problem and upon contacting
our service provider, we could not find a solution. At
that point we reinstalled HOME on the PC and everything
worked fine. The HOME PC was disconnected from the
netwrk Friday and began pulling an invalid ip address
again. I have searched the Knowledge Base and tried
everything possible. Please give some advice that cane
correct this problem. We have run every virus scan
possible. We have connected another WINXP HOME computer
to the same cable and connection and it has worked. We
have run a Fluke tool through the lines and it was good.
Any advice that you can give would be greatly
appreciated. Thank you for your time and attention.

Are you authorized by your ISP for the multiple IP addresses? If this
is a cable modem, you can try to power it down for five minutes, then
power back up to clear its MAC address cache and let it find the MAC
addresses of connected computers with a fresh cache.

Q
 
B

Bob Willard

Glenn said:
Yes, I installed a new Linksys network card. The ip
address should be 64.X.X.X. It is reading a 169.X.X.X.
Please contact me via email if will be easier to work this
out.

Thank you so very much for you help.

Glenn.


Have you tried


confers no rights.

That's an APIPA address -- that PC is either not set up to use
DHCP or that DHCP is failing. Check first that your PC is set up
as a DHCP client, then check that the DHCP server address is OK.

Make sure your NIC and your PC-hub cable and that port on the hub
are OK. You can check the cable and the port by swapping them
with those from the good PC.

If that hub is really a simple hub, and not a router, then you
are expecting your ISP to issue two IPs -- one for this PC and
one for the other PC. Some ISPs won't do so, and some won't do
so unless you pay extra. Your ISP's tech.support gang should be
able to tell you, but tech.support at ISPs runs the gamut from
weak to dreadful. If your bad PC can't get an IPA when your good
PC is online, but the bad PC can get an IPA after the good PC
has released its IPA, then I'd suspect the ISP is not issuing
a second IPA, in spite of whatever their tech.support gang says.
 
B

Bob Willard

Glenn said:
Bob,

I have tried many things. We tried a clean install and
nothing. The hub is functioning properly because we
tested it with another computer on all ports. The cable
is good because we ran a Fluke tool test. We tried a
direction connection with no hub from our line in, to the
computer with the problem. So far nothing has worked.
This problem I have heard is no good. We keep pulling
the 169.X.X.X ip address and have checked, double-checked
and re-checked everything that could be wrong. We have
used a naked connection and nothing. Any advice that you
can give would be EXTREMELY appreciated.

Glenn

Another thought about your ISP (sorry, but I'm kinda down on my
ISP at the moment):

Some ISPs use the MAC address of your NIC to validate your account,
and will not issue an IPA unless your NIC's MAC is on their list.
If that's your problem, your ISP's tech.support should be able to
tell you, but my opinion of ISP tech.support is pretty low. You
can test this hypothesis by replacing the bad PC's NIC with the NIC
from the good PC; you *might* be able to test by cloning the MAC
address to make the bad PC's NIC use the MAC address of the good
PC's NIC, but such cloning is not supported by many NICs and their
drivers.

Of course, if swapping NICs allows the bad PC to get an IPA, then
you won't know if it means a bad NIC or that my MAC-validation
hypothesis is correct, but you'll be well on your way to a solution.
 

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