Network trouble (weird)

Small_Fryz

Small_Fryz

But why is the Rum gone??
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Australia
QLD, Australia
Small_Fryz
Now here is mysetup.

Linksys WAG54G Router/ADSL gateway/wireless access/4 port switch.

I have 2 Desktops and a Netphone connected to it via ethernet, and a laptop and desktop connected via Wirless G.

I also have a laptop connected via ethernet (the problem computer).

Now i have it configured so that the router assigns each PC a ip address to be able to connect to them 192.168.1.1 is router, with 255.255.255.0 subnet mask. The home network starts at 192.168.1.64 and goes to about .69

Now recently my laptop has stopped working (every other PC works fine), im not sure what triggerd it but this is what i know.

The computer is unable to get an IP address from the router, i have tried releasing and renewing the IP address and it just cant, ive tried reparing the connection and no luck. Ive also tried other cables and "slots" on the router and no luck. I have also tried it via "wireless" but get the same problem with the IP address. So then i decided to manually put in the IP and DNS address. Now this is where it gets weird. I can get the computer to connect to the network and also share files. I can ping the 192.168.1.1 router and also the DNS servers to do with my internet. But i cant enter 192.168.1.1 in the browser to log into my router nor can i access the internet. yet the computer can access the other pcs.

If anybody has the slightest idea of WTF is going on please let me know. Im no newbie when it comes to PC's but I'm not a uber professional either.
 
Why have an DHCP Scope so small? If it starts at .64 and ends at .69, you only have scope for 6 devices.

Set your DHCP scope to .50-.200 on the router and see if the problem goes away.
 
GilesGuthrie
Why have an DHCP Scope so small? If it starts at .64 and ends at .69, you only have scope for 6 devices.

Set your DHCP scope to .50-.200 on the router and see if the problem goes away.
Click to expand...

Its set to a 190, i meant the .65 -.69 are the ones taken.
 
I did install zonealarm then had problems so unninstalled it, then i also disallowed windows firewall, only software running is nod32. But the other PC's run zonealarm so i dont know. Maybe zonealarm changed something, but i dont know what plus its unnistalled and gone anyway.

Ive also uninstalled the network card and driver then reinstalled it and nothing.
 
Well, the fact is that since you can assign an IP address and then get some network connectivity, your network card and cable are OK. I asked if you had a firewall on because some firewalls block the 255.255.255.255 broadcast sent out by a computer requesting DHCP services.

Some things for you to do:
- Restart the router
- Check that the DHCP Client service is running on your router.

When you renewed the IP address manually (as opposed to specifying the IP address), did you do it using the command prompt? If so, what feedback did you get?

In short, I think that there's something screwy with the DHCP config on your network, and that the laptop is the first device to discover it. I suspect that bouncing the router may well be the answer for you. It could be that the router is not releasing its notion that your computer has an IP address assigned to it already.
 
i have checked that DHCP is running and it is. The laptop does have a IP address already assigned to it (completely different to my network one).

the message i got was "An error occured while renewing interface Local Area Connection 2 : the requested service proivder could not be loaded or initialized"

then when i type ipconfig again, it says

Auto configuration IP address... 169.254.254.188
subnet mask...... 255.255.0.0

Ive tried shutting down the router and computer. but nothing

But like you said, for some reason the computer is not getting the IP handout. Ive tried one of the other PC's and released and renewed the IP and it works again so the router must be giving out some ip's.
 
Yes, Windows 2000 and above will go for the 169.254 autoconfiguration address when they can't contact the DHCP server, or when it doesn't issue a lease.

Have you restarted the Linksys router? I suspect that it has a problem in one of its tables that is stopping it from assigning an address to the laptop. I've seen it with some Cisco PIX firewalls that are also doing DHCP.
 
by restart you mean reset?

Ive turned it off and such, and pulled out power cord. But no luck yet.
 
Small_Fryz
Auto configuration IP address... 169.254.254.188
subnet mask...... 255.255.0.0
Click to expand...

Your subnet mask seems to be incorrect, IMO. It should be 255.255.255.0. That may be a small cause, but I'm unsure. You should be able to set this in the router's LAN configuration.

Are you running MAC address filters through your network, by any chance? MAC address filters only allow certain network devices to obtain an IP address from the router. All other devices are denied an IP address by default unless you specifically add them to the MAC filter list.

I've had IP address problems like this before with laptops on my home network. Usually an ipconfig /release followed by an ipconfig /renew in the command prompt works for me.

I hope that helps.
 
Matrixhasu77
Your subnet mask seems to be incorrect, IMO. It should be 255.255.255.0. That may be a small cause, but I'm unsure. You should be able to set this in the router's LAN configuration.
Click to expand...

Well, that's the subnet mask you get if the LAN card autoconfigures an IP address. If it successfully completed DHCP, it would have a 255.255.255.0 subnet mask.

Either way, it wouldn't really create the problem that Small_Fryz is having. The subnet mask just defines the range of addresses that are contactable directly, without going to the Gateway.

Matrixhasu77
Are you running MAC address filters through your network, by any chance? MAC address filters only allow certain network devices to obtain an IP address from the router. All other devices are denied an IP address by default unless you specifically add them to the MAC filter list.
Click to expand...

My Linksys router only allows MAC filtering on the wireless connection. Small_Fryz's affected computer is on the wired network.
 
GilesGuthrie
My Linksys router only allows MAC filtering on the wireless connection. Small_Fryz's affected computer is on the wired network.
Click to expand...

Correct, plus i do have the MAC address filtering on for the 2 wireless PC's.

My next option that im doing right now is restoring the laptop back to factory settings and haveing a fresh reinstall. I dont loose any data, since i only did this just before the laptop stop working (this time i wont install zonealarm :lol:, as i think it had something to do with it.) its just a PITA to get all the programs and windoes updates (since the factory version is from 2004) :grumpy: :grumpy:. Hopefully in a few hours when i got it configured my problem will be solved, otherwise i really dont know what i will do next. I really dont want to reset the router back to factory settings as my parents rely heavily on the internet (home business) and doing anything that could bugger this up for the other PC's is a bad idea :scared:.

So we see what happens with the reformat and go from their.

I want to thank you GG for your help on my issue 👍
 
Well i have reformatted and just like i thought it would the laptop now has no trouble and gets its IP address, accesses the network and the internet with no trouble at all.

I had a pretty good idea that the problem was the laptop and not the router, Dont ask me what was wrong with the laptop but what ever it was is now fixed with the reformat.

Thanks a lot GG for your help and understanding of my issue 👍.
 

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