Limited or no connectivity on one computer

[Kyuubin]

Recently, one of my computers started giving this error, at first I thought it may have been the router, as it was old, and has been through hell, so I got a new switch a dynex DX-ESW5, same problem, thought maybe it was the network card, so I used another computer I am fixing in the same room, nothing, so finally I decided to see if it was the cord, bought a new one.. nothing.

I've tried doing a full network reset (shutting everything down, waiting a minute restarting it all), and various other things, now it comes up, when I enable the connection it takes like three minutes "acquiring network address" then comes up with limited or no connectivity

Modem is a motorola SB5101, but that's most likely not the problem, I also replaced the modem when this all started, same problem.

Forgot to mention, the computer i'm connecting on and posting on is working fine, and is on the same network, and all the connections are wired.

and again, both computers on xp professional, my computer is hand built, the other computer is ancient as they come, and was given by a friend, have no idea on it's make or model, but it has a basic PCI network card.

[BonJamon]

Is the problem system set to obtain its IP via DHCP? check if it is in TCP/IP properties. If not set it to obtain IP automatically.

If it already is, you could try to get it working by writing down the IP,Subnet Mask,Default Gateway & Dns servers from the machine that works and entering those values manually, dont forget to change the last number on the IP address so that its unique.

[johnwill]

You have a plain DOCSIS modem and an Ethernet switch. Most ISP's don't give multiple public IP addresses, so I'm not that surprised that you can only get one connections.

On the working and non-working computer, let's see this.

Start, Run, CMD to open a command prompt:

Type the following command:

IPCONFIG /ALL

Right click in the command window and choose Select All, then hit Enter.
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.

[Kyuubin]

working

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

Windows IP Configuration

Host Name . . . . . . . . . . . . : kyukyu-126ca185
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : carolina.rr.com

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : carolina.rr.com
Description . . . . . . . . . . . : SMC EZ Card 10/100 PCI (SMC1211 Seri
es)
Physical Address. . . . . . . . . : 00-30-F1-25-05-77
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 71.75.11.161
Subnet Mask . . . . . . . . . . . : 255.255.240.0
Default Gateway . . . . . . . . . : 71.75.0.1
DHCP Server . . . . . . . . . . . : 24.25.4.128
DNS Servers . . . . . . . . . . . : 24.25.5.150
24.25.5.149
Lease Obtained. . . . . . . . . . : 2007年10月25日 19:54:25
Lease Expires . . . . . . . . . . : 2007年10月26日 19:54:25

Non-working

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.


Windows IP Configuration

Host Name . . . . . . . . . . . . : mine-970b99686d
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection 2:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP EN1207D-TX PCI 10/100 Fast Ethern
et Adapter
Physical Address. . . . . . . . . : 00-10-B5-5F-63-9E
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Autoconfiguration IP Address. . . : 169.254.244.195
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :


.. ok that's the auto-assign address when it can't get an ip.. why did it suddenly stop I wonder (was working fine two days ago ;

[johnwill]

I suspect your ISP tightened up the network node and noticed you had two public IP addresses. I also suspect that if you just connect the second computer without the first one, it'll suddenly connect fine. (remember to power cycle the modem).

You need a broadband router.

[Kyuubin]

Well that's the odd point we had a router before this, a DI-605E or some such, worked fine, then the problem started, we replaced it with the switch thinking it was the router, but we got a switch due to lack of cash on hand at the time,

[johnwill]

I'd dig that router back up, because I think it's probably still working. I'm almost certain that you don't have multiple public IP addresses, unless you're paying for them. It's an extra cost feature for any ISP that I'm aware of.