[Ishtim]

My main PC has dissappeared from the Workgroup (XP Pro) list since replacing my modem.

Recently my Westell 6100 fell victim to lightning and I replaced it with Motorola 2210-02 and set it up as before in DHCP mode hooked to a WRT54G. The "main" PC (which I can no longer see in the WG list) is assigned a public IP via IP passthrough on the modem with standard subnet mask. The other 3 machines (192.168.0.X) can see each other just fine and I am able to ping them from the main box. I have also checked the firewall exceptions for file sharing and tried the default and enabled NetBIOS settings for TCP/IP.

Any Ideas? Thanks in Advance!

[JohnWill]

Let's see this from the main machine.


Hold the Windows key and press R, then type CMD to open a command prompt:

In the command prompt window that opens, type type the following commands, one at a time, followed by the Enter key:

Note that there is a space before the -n or the /ALL, but there is NOT a space after the - or / in the following commands.

NBTSTAT -n

IPCONFIG /ALL

Right click in the command window and choose Select All, then hit Enter to copy the contents to the clipboard.
Paste the results in a message here.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.

[Ishtim]

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Drew>nbtstat -n
Local Area Connection:
Node IpAddress: [74.XXX.XXX.199] Scope Id: []
NetBIOS Local Name Table
Name Type Status
---------------------------------------------
LEWIS-FD188CB69<00> UNIQUE Registered
WORKGROUP <00> GROUP Registered
LEWIS-FD188CB69<20> UNIQUE Registered
WORKGROUP <1E> GROUP Registered
WORKGROUP <1D> UNIQUE Registered
..__MSBROWSE__.<01> GROUP Registered
C:\Documents and Settings\Drew>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : Lewis-fd188cb69
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Atheros AR8121/AR8113/AR8114 PCI-E E
thernet Controller
Physical Address. . . . . . . . . : 00-23-54-00-BD-CB
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 74.XXX.XXX.199
Subnet Mask . . . . . . . . . . . : 255.0.0.0
Default Gateway . . . . . . . . . : 68.208.232.7
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 205.152.150.23
205.152.144.23
Lease Obtained. . . . . . . . . . : Saturday, October 31, 2009 6:15:06 P
M
Lease Expires . . . . . . . . . . : Saturday, October 31, 2009 6:17:06 P
M
C:\Documents and Settings\Drew>


Hope this is what you need....

[JohnWill]

You have the modem connected to one of the LAN/Network ports on the router, connect it to the WAN/Internet port. The WAN port is separate from the four LAN ports. Turn both units off, then turn on the modem, followed by the router, and it'll probably work better.

[Ishtim]

I will try this ASAP, the lil one is in there at the moment.... Thanks!

[Ishtim]

Indeed I had the modem plugged into one of the LAN ports.
However, I lose connectivity when plugging into the "Internet" port. All of the devices are unable to get an IP when I do. Could this be a router setting on the WRT54G?

I also noticed that all the UPnP stuff has disappeared as well.

[JohnWill]

You MUST cycle power on the modem and the router when you change the connections.


Turn off both units, turn on the modem, wait two minutes, turn on the router.


Connect a computer to the router's LAN port and post the following information.


Try these simple tests.

Hold the Windows key and press R, then type CMD (COMMAND for W98/WME) to open a command prompt:

In the command prompt window that opens, type type the following commands one at a time, followed by the Enter key:

NOTE: For the items below in red surrounded with < >, see comments below for the actual information content, they are value substitutions from the previous IPCONFIG command output! Do NOT type <computer_IP_address> into the command, that won't work. Also, the < and > in the text is to identify the parameters, they are also NOT used in the actual commands.

Do NOT include the <> either, they're just to identify the values for substitution.

IPCONFIG /ALL

PING <computer_IP_address>

PING <default_gateway_address>

PING <dns_servers>

PING 74.125.45.100

PING yahoo.com

Right click in the command window and choose Select All, then hit Enter to copy the contents to the clipboard.
Paste the results in a message here.

<computer_IP_address> - The IP Address of your computer, obtained from the IPCONFIG command above. (For Vista/Win7, the IPv4 Address)

<default_gateway_address> - The IP address of the Default Gateway, obtained from the IPCONFIG command above.

<dns_servers> - The IP address of the first (or only) address for DNS Servers, obtained from the IPCONFIG command above.

If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.

[Ishtim]

Ok, I only get to play network newbie on the weekend.

As requested above,
I powered everything off.
Disconnected all ethernet cables
ran cable from modem to "Internet" port
powered on modem
(wait 2 mins.)
powered on router
connected a PC to one of the numbered ports on the router
and I get the "limited or no connectivity" dialogue.

Had to power cycle modem & router and reconnect to ALL LAN ports on router to connect and send this.

For grins I did IPCONFIG /ALL on 2 different machines connected to the router while connected this way and got

Wireless PC
Connection-specific DNS suffix:
Auto config IP: 169.254.114.79
Subnet 255.255.0.0
Default GW: 169.254.114.79

PC set to get the IP Passthrough:
Connection-specific DNS suffix:
Auto config IP: 169.254.37.203
Subnet 255.255.0.0
Default GW: 169.254.114.79

Thanks!

[JohnWill]

Well, you have no connection to anything now. Also, we need you to post the ENTIRE IPCONFIG /ALL output, there is far more than just IP addresses that we look at.

I don't understand the results at this point, something is seriously wrong.

[Ishtim]

I repeated the above with the following results:

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Ishtim>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : P5Q
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Atheros AR8121/AR8113/AR8114 PCI-E E
thernet Controller
Physical Address. . . . . . . . . : 00-23-54-00-BD-CB
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Autoconfiguration IP Address. . . : 169.254.37.203
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
C:\Documents and Settings\Ishtim>

I noticed something else VERY fishy...

The #1 LAN port fails to connect when plugging the cat5 from the modem to the router there too... The only "working" configuration is the 2(to modem), 3 & 4 to PCs on the WRT54g. Hmmmm...

[JohnWill]

Is your wired NIC the Atheros in that display? Isn't that a wireless NIC? I don't see any wired NIC.


Hold the Windows key and press R, then type devmgmt.msc

Please respond to all the following steps.

1. Under Network adapters, please tell me all the devices listed.
2. Are there any devices under Network adapters that have a red x displayed?
3. Also, are there any devices anywhere in the Device Manager display with yellow ? or ! displayed?

[Ishtim]

That is the onboard NIC for the ASUS P5Q Pro.

devmgmt.msc -> Network Adaptors yields:
1394 NetAdapter
Atheros AR8121/13/14 PCI-E Ethernet Controller

No red X or yellow ! in device manager.

I have not added any additional NICs...

[JohnWill]

TCP/IP stack repair options for use with Windows XP with SP2/SP3.

Start, Run, CMD to open a command prompt:

In the command prompt window that opens, type type the following commands, each followed by the Enter key:

Note: Type only the text in bold for the following commands.

Reset TCP/IP stack to installation defaults, type: netsh int ip reset reset.log

Reset WINSOCK entries to installation defaults, type: netsh winsock reset catalog

Reboot the machine.

[Ishtim]

After enter the above at the command prompt, I followed with trying the LAN port connection as stated above and got the same results... "Limited or No Connectivity" and similiar IPCONFIG /ALL output.

[JohnWill]

Well, the indications are that you are not seeing the router. That is normally one of the following.

1. Bad cable.
2. Bad port on the router/switch.
3. Bad NIC.
4. Driver problems on the connecting computer.

I've eliminated stack corruption from the list because you've reset the TCP/IP stack.

Do you get any different results booted in Safe Mode with Networking? Let's see the IPCONFIG /ALL in that mode.