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There is an ip Address conflict


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#1 Ramchu

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Posted 02 October 2011 - 09:35 AM

Hello All

I have two Desktop computers both Compaq, hardwired through a Netgear RP614 v2 (4port) router with the latest firmware.
The connection to the internet is through HiBeam internet which sends a wireless signal to a Modem mounted on my house.

The problem that I have is that I have occasional momentary power outages (2/3 times week - power blinks off then on)
The internet modem and the router both auto power back up and the computers stay off until manually powered back up.

When this happens and we power the computers back up the computer that runs Windows XP SP3 almost always gives an alert
of there is an ip address conflict with another system on the network ... and if I go into the control panel>network connections
and do a repair it almost always fails.On the other computer I am running PCLinux KDE 4.

I think that it is because the router is handing out the ip address's ahead of the computers booting up, but I could be wrong.
The Router and both computers are set to get IP address automatically and DHCP is enabled in the router.

Is there a way to assign a particular computer static IP and have the Router assign that ip to that same computer repeatedly ?

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#2 cryptodan

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Posted 02 October 2011 - 10:24 AM

Have a read here: http://portforward.com/networking/static-xp.htm, and you could try booting up one computer at a time.

#3 Ramchu

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Posted 02 October 2011 - 10:51 AM

Thanks, cryptodan for your reply.

I had already been to that page,searching Google about my problem.
This still happens even when the computers are booted up one at a time.

It sometimes is as if the Router blocks the request for a new IP address from the computer

Edited by Ramchu, 02 October 2011 - 10:52 AM.


#4 cryptodan

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Posted 02 October 2011 - 10:59 AM

Can you perform the following on the linux machine:

ifconfig

post the results.

ipconfig /all on the windows xp machine

post the results.

DHCP Doesnt work like you say it does.

If the IP is in use on the same network then it will get another one.

#5 Ramchu

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Posted 02 October 2011 - 11:09 AM

here are the result of ifconfig:

[root@localhost me]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:11:D8:39:D0:4E
inet addr:192.168.0.3 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::211:d8ff:fe39:d04e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:110257 errors:0 dropped:0 overruns:0 frame:0
TX packets:83887 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:102237933 (97.5 MiB) TX bytes:13596388 (12.9 MiB)
Interrupt:23 Base address:0xcc00

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:32 errors:0 dropped:0 overruns:0 frame:0
TX packets:32 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1840 (1.7 KiB) TX bytes:1840 (1.7 KiB)


This is result from the XP machine:

Microsoft Windows XP [Version 5.1.2600]
© Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\user>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : bleep
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : localdomain

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : localdomain
Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast Eth
ernet NIC
Physical Address. . . . . . . . . : 00-40-F4-44-C8-3F
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.4
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 208.67.222.222
208.67.220.220
8.8.8.8
Lease Obtained. . . . . . . . . . : Friday, September 30, 2011 6:53:58 P
M
Lease Expires . . . . . . . . . . : Monday, January 18, 2038 10:14:07 PM


Edited by Ramchu, 02 October 2011 - 11:19 AM.


#6 cryptodan

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Posted 02 October 2011 - 11:28 AM

What other devices do you have on the network?

#7 Ramchu

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Posted 02 October 2011 - 11:43 AM

What other devices do you have on the network?

HiBeam internet modem, HiBeam VoIP interface, Netgear RP614v2 Router,2 Desktop Computers( each computer has its own HP printer connected )

and nothing else

#8 cryptodan

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Posted 02 October 2011 - 12:04 PM

I would recommend setting up all devices that require to be constantly on as static IP's meaning your VoIP Devices and Printers.

#9 Ramchu

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Posted 02 October 2011 - 12:12 PM

I would recommend setting up all devices that require to be constantly on as static IP's meaning your VoIP Devices and Printers.


Thanks, I will try that, I will have to contact HiBeam about the VoIP interface having a static IP.

Thank You for your time !

#10 Ramchu

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Posted 03 October 2011 - 12:14 PM

OK - Found the solution !

In my router I can assign my PC's a static IP Address, in this particular Router
its called Address Reservation so no matter what they always get same IP
Address.

#11 cryptodan

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Posted 03 October 2011 - 03:05 PM

Did that resolve the issue?

#12 Ramchu

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Posted 03 October 2011 - 04:10 PM

Did that resolve the issue?


YES and Thank You for the help !

#13 cryptodan

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Posted 03 October 2011 - 06:37 PM

You are welcome, I will add this to my knowledge base.




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