LAN not connecting to internet

April 7, 2010 at 03:55:46
Specs: Microsoft Windows XP Professional, 2.999 GHz / 1535 MB

Firstly, may I say just finding this site has given me such a boost. Up until now I was fighting a losing battle and all on my own - see last second paragraph re my isolated location.

Whats the score? Well my own PC is connecting to the internet OK but my LAN is not connecting to the internet. It just stopped 2 weeks ago after running smoothly for more than 2 years!.

The Windows diagnostic test done on 2 of the other PC's in our home showed that they have a DNS failure - in particular the WAN Miniport IP - but all show full wireless connectivity at excellent strength. I don't know what this means.

We have 3 other PC's plus a satellite TV Dreambox with its own static IP address that needs to be connected to the internet. Because of this I have to use static IP addresses along with allocated DNS and gateways for all PC's in our home. There has never been a problem with this arrangement until now.

Now none can access the internet, there is no TV connection (the TV box states to check my internet connection). Also I usually get "request times out" responses I when I try to ping their IP address from my own PC (that luckily still connects OK with the internet) - but sometimes I will get successful replies for 1 or 2 of them only to find a minute later that another ping test will give no response!

For your information that may help you to help me, my system specs from the scan on this site show:

Manufacturer: Custom
Model: CUSTOM
OS: Microsoft Windows XP Professional
CPU/Ram: 2.999 Ghz / 1535 MB
Video Card: ATI Radeon X1050
Sound Card: USB Audio Device

Another point is that I have a switch/router (not sure which but its a TP-Link model TL-SF1008D with 8 ports) and following another post reply on this site, when I tested it via my working , PC at http://192.168.1.1 all I got was "problem loading the page - connection times out" mesage.

If its just a router/switch failure I will be happy to drive the 6 hours to Bangkok and buy a new one - if that solves the problem. I don't know how to do a diagnostic test on it anyway. But if that's all the problem is I will be delighted!

Finally following another post reply I came across in my research on this site, I pinged 127.0.0.1 successfully and according to that poster this is supposed to mean that my network adapter is OK
(whatever that means) - but I'm grateful for small mercies.

As a VERY inexperienced user following instructions blindly most of the time, it would be just great if someone could simply tell or better show me in SIMPLE STEPS how I can fix this problem.

Any help will be greatly, greatly appreciated as I live in small village in far north eastern Thailand - no one within 300 miles speaks English let alone having the knowledge to help me in my internet struggles and no TV reception.

Many thanks folks - will be looking forward so much to your assistance.


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#1
April 7, 2010 at 11:35:04

So first let's start with your working pc.
You first should open a command prompt (Start / Run / cmd).
Type in:
ipconfig /all

Post back the result.


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#2
April 7, 2010 at 17:34:24

OK done as requested with following results:

Ethernet adapter local area connection:
Connection-specific DNS suffix:
Description...............SiS191 1000/100/10 Ethernet Device
Physical Address....00-1B-FC-E6-EC-3E
Dhcp Enabled..........No
IP address...............192.168.0.1
Subnet Mask...........255.255.255.0
Default Gateway ...192.168.0.1
DNS Servers..........202.129.27.134
202.129.27.135

PPP Adapter 3G Connection:

Connection-specific DNS suffix:
Description...............WAN <PPP/SLIP> Interface
Physical Address....00-53-45-00-00-00 begin_of_the_skype_highlighting              00-53-45-00-00-00      end_of_the_skype_highlighting begin_of_the_skype_highlighting              00-53-45-00-00-00      end_of_the_skype_highlighting
Dhcp Enabled..........No
IP Address..............10.136.75.94
Subnet Mask...........255.255.255.255
Default Gateway....10.136.75.94
DNS Servers..........61.19.245.245
61.19.245.246
NetBIOS over Tcpip.....Disabled

Really hope this helps you help me.
The other PC's on our LAN are not for games but for our daughters' distance education needs re our isolated position and their school term starts again next Monday - hence my appreciation


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#3
April 7, 2010 at 18:34:31

Ok so this PC seems to make it's own turn to the internet, because it has it's own PPP adapter, that connects to the internet.
So this won't really help.

The TP-Link TL-SF1008D is simply a switch and did not (and can not) act as a router through the internet.
So your working PC, which has the PPP adapter inside, must provide the internet connection for all other devices (PCs a.s.o.).

So the easiest way is to use a SOHO router to connect all the devices to the internet.


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#4
April 7, 2010 at 22:24:31

OK.

3 quick questions before I start my long drive south to Bangkok where hopefully I can find the router you are recommending:

1. Does this mean the switch is not working? Up until 2 weeks ago everything was connecting perfectly. No problems....just wanted to know or maybe I have to hook it up to the router as well?

2. Do I simply replace the existing TP Link switch with the SOHO router?

3. Do you recommend any particular size, model, make etc. of SOHO router?

You don't know just how much I appreciate you taking the time to help me.

Many, many thanks again - If you can solve this crisis for me I will definitely be recommending this site to everyone.


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#5
April 8, 2010 at 11:31:49

I really don't know, how it was configured in the past, but it seems, that all the other PCs and devices made the internet connection through the just working PC.

What router you have to buy, depends on the internet connection you have.
So you might first call your ISP and ask them for what router is suitable for your connection.

Also you should crosscheck the installation guide of your ISP, before buying another router.


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