PC Remembers Old IP Addresses of Other Network PCs

[Dan]

I had to change the IP address range for my home
network. Each PC knows it's own computer name and new
IP address, and the router has the correct computer names
and IP addresses in its DHCP table. However each PC on
the network somehow remembers the old IP addresses for
other PCs on the network.

Example:

I check the IP settings on "Office" and they are
correct (10.1.100.10). I check the IP settings
at "Recroom" and they are correct (10.1.100.11). If I'm
at Office and I ping the Recroom using the IP address
(ping 10.1.100.11), I get four straight clean responses.
If I ping Recroom by name (ping recroom) I see
"Pinging recroom [192.168.1.11] with 32 bytes of data"
and I get four "request timed out" messages.
Somehow, the Office PC is still associating the name
Recroom with its old IP address (192.168.1.11). Recroom
also remembers the old IP address for Office.

Due to this problem, I am unable to share files between
PCs on the network. I have run the networking wizard
several times on each computer. I have verified the IP
addresses, computer names, workgroup, etc. on each
computer, verified the settings in the DHCP table on the
router, reset the router, rebooted both PCs, and run a
number of variants of the ipconfig command without
success. I'm stuck.

Does anyone have any ideas where in Windows XP (or Me)the
system stores the names and IP addresses of other PCs on
the network? I need to erase, overwrite, or something to
be able to access other PCs on the network.

Thanks,
Dan

 

[Steve Winograd [MVP]]

I had to change the IP address range for my home
network. Each PC knows it's own computer name and new
IP address, and the router has the correct computer names
and IP addresses in its DHCP table. However each PC on
the network somehow remembers the old IP addresses for
other PCs on the network.

Example:

I check the IP settings on "Office" and they are
correct (10.1.100.10). I check the IP settings
at "Recroom" and they are correct (10.1.100.11). If I'm
at Office and I ping the Recroom using the IP address
(ping 10.1.100.11), I get four straight clean responses.
If I ping Recroom by name (ping recroom) I see
"Pinging recroom [192.168.1.11] with 32 bytes of data"
and I get four "request timed out" messages.
Somehow, the Office PC is still associating the name
Recroom with its old IP address (192.168.1.11). Recroom
also remembers the old IP address for Office.

Due to this problem, I am unable to share files between
PCs on the network. I have run the networking wizard
several times on each computer. I have verified the IP
addresses, computer names, workgroup, etc. on each
computer, verified the settings in the DHCP table on the
router, reset the router, rebooted both PCs, and run a
number of variants of the ipconfig command without
success. I'm stuck.

Does anyone have any ideas where in Windows XP (or Me)the
system stores the names and IP addresses of other PCs on
the network? I need to erase, overwrite, or something to
be able to access other PCs on the network.

Thanks,
Dan

See if the Hosts file contains the old IP addresses. To edit the
file, enter this command in the Start | Run box, making sure to
include the "." at the end of the command:

Windows 2000/XP:
notepad C:\Windows\System32\Drivers\Etc\Hosts.

Windows 95/98/Me:
notepad C:\Windows\Hosts.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

 

[Dan]

Bingo!

Thanks Steve.

Dan

-----Original Message-----

I had to change the IP address range for my home
network. Each PC knows it's own computer name and new
IP address, and the router has the correct computer names
and IP addresses in its DHCP table. However each PC on
the network somehow remembers the old IP addresses for
other PCs on the network.

Example:

I check the IP settings on "Office" and they are
correct (10.1.100.10). I check the IP settings
at "Recroom" and they are correct (10.1.100.11). If I'm
at Office and I ping the Recroom using the IP address
(ping 10.1.100.11), I get four straight clean responses.
If I ping Recroom by name (ping recroom) I see
"Pinging recroom [192.168.1.11] with 32 bytes of data"
and I get four "request timed out" messages.
Somehow, the Office PC is still associating the name
Recroom with its old IP address (192.168.1.11). Recroom
also remembers the old IP address for Office.

Due to this problem, I am unable to share files between
PCs on the network. I have run the networking wizard
several times on each computer. I have verified the IP
addresses, computer names, workgroup, etc. on each
computer, verified the settings in the DHCP table on the
router, reset the router, rebooted both PCs, and run a
number of variants of the ipconfig command without
success. I'm stuck.

Does anyone have any ideas where in Windows XP (or Me) the
system stores the names and IP addresses of other PCs on
the network? I need to erase, overwrite, or something to
be able to access other PCs on the network.

Thanks,
Dan

See if the Hosts file contains the old IP addresses. To edit the
file, enter this command in the Start | Run box, making sure to
include the "." at the end of the command:

Windows 2000/XP:
notepad C:\Windows\System32\Drivers\Etc\Hosts.

Windows 95/98/Me:
notepad C:\Windows\Hosts.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com
.