modem assigning ip instead of router?

Dell Vostro 1520 laptop computer ( 160...
September 27, 2010 at 18:40:33
Specs: Windows XP
I have an optus wireless modem connected to a belkin router which is connected to a PC. Usually my laptop (which connects wirelessly)gets a home network ip address to allow use of printers and shared files etc. Now and then, this doesn't happen, the laptop is assigned an ip address from the MODEM, rather than from the router. What on earth is going on? I have tried everything. The router is still showing correct setup for home network.
BTW, I can obviously still connect to internet on the laptop, just can't get into home network.

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#1
September 27, 2010 at 20:42:06
post a ipconfig /all from the problem machine for review

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#2
September 27, 2010 at 22:40:09
I don't know how to copy and paste the info, sorry, I'm not much of a tech.
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

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

Windows IP Configuration

Host Name . . . . . . . . . . . . : vostro
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Realtek RTL8168C(P)/8111C(P) PCI-E G
igabit Ethernet NIC
Physical Address. . . . . . . . . : 00-21-70-92-12-7B

Ethernet adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Wireless WiFi Link 4965AGN
Physical Address. . . . . . . . . : 00-1F-3B-CB-74-63
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.1.101
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
Lease Obtained. . . . . . . . . . : Tuesday, 28 September 2010 3:25:31 P
M
Lease Expires . . . . . . . . . . : Wednesday, 29 September 2010 3:25:31
PM

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Bluetooth Personal Area Network
Physical Address. . . . . . . . . : 00-21-86-41-8A-D3


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#3
September 28, 2010 at 00:41:51
Sorry, you have a wireless modem as well as a wireless router?
What are the model numbers of the modem and router?

If you have both wireless modem and wireless router, how does the router connect to the modem. By ethernet cable? If so you need to turn off the wireless in the modem and leave only the router's wireless active. That will leave your laptop with only one option to make it's wireless connection. As it is you seem to be running two wireless connections and the laptop will sometimes connect to the router and at other times will connect to the modem.

Goin' Fishin' (Some day)


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Related Solutions

#4
September 28, 2010 at 18:40:31
I am not sure what you mean by turn off the wireless in the modem. The modem itself connects to Optus via a mobile sim card. Its a Huawei. The router is a Belkin G. What exactly do I turn off? (I know how to access the modem etc., just not sure what to do next.

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#5
September 28, 2010 at 20:06:41
What model Huawei device? Is it a combination mobile broadband modem & WIFI connection? It should have come with some kind of user manual. Does it connect to the router WAN port by an ethernet cable?

Goin' Fishin' (Some day)


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#6
September 29, 2010 at 08:34:12
Option 1 would be to turn off the wireless on the modem.

Alternately since there is a wireless modem and it is handing out ip addresses I would suggest the router be setup differently.

Instead of wiring the router via its wan port you would wire it to the modem via its lan port. This may require a crossover cable to work. You would turn off the dhcp server on the router and set it to a ip address in the modems ip range.

Here is a picture:
http://kb.netgear.com/app/answers/d...

What this will accomplish is to put the routers lan into the same subnet as the wireless modem. This way you can share on your lan.


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#7
September 29, 2010 at 21:48:50
Thank you Richard and Wanderer, I have disabled WLAN on the modem and now my PC is picking up the ip address from the router. Had a scary moment when I couldn't connect to the home network, but that is fixed now. :-)

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#8
September 30, 2010 at 04:21:51
Glad you got it sorted and thanks for letting us know.

Goin' Fishin' (Some day)


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