DHCP server not leasing IP addresses

[Herr Kurm]

I have 2 computers (both XP) connected to a Infosmart router.

Ive had problems before, but 5 months ago i just gave up (didnt need the second comp). A month ago i connected all the hardware like they were before, n it worked. I was able to connect to internet from both of computers. It seemed to me like a miracle, because it had repaired itself But 3 days ago the connection was ¤%@=. I wasnt even able to configure my router trough the browser. Got a bit upset . I tried the ipconfig/release/flushdns/renew commands about 1000 times. It gave me the same error : Unable to connect to your DHCP server. This is what it gives me when i type ipconfig/release:

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Autoconfiguration IP Address. . . : 169.254.46.62
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :

PPP adapter adsl:

Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : 80.235.90.75
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 80.235.90.75

I know that the IP address 169.blablabla indicates that my DHCP server isnt leasing IP adresses (but i might be wrong cuz i cant read anymore ).

I have resetted my modem and router. Nothing changed.

I this information wasnt enough, tell me. I would really preciate your help

[idtent]

You have a public ip address on one machine.

Make sure you have the modem plugged into the router wan port, then the computers plugged into the remaining ports, usually labeled 1-4.

Then try resetting all of the routers, modems and pcs. Modem first, then router, then the pc's

[idtent]

What router are you using, and what ip do you normally type to access it?

[Herr Kurm]

i have all the cables in the right places. I usually type 192.168.1.1 to accsess my router. I have done the resetting for about 16 times (yes the modem, router n computers). My modem seems to be fine because when i connect it directly to my computer then it works fine.

[idtent]

Both of your computers should have a 192.168.1.# number. If they don't, you will not be able to get to your router.

Does the first computer that works, have a static ip. When you release/ renew on it, does it get the same 80. something ip?

Unplug your modem from the router. reboot the router. release/renew on both computers, what do you get?

The router should have two lights (one for each computer plugged into it). Make sure that the wan light lights up when you plug the modem in. The router should be getting the 80.#.#.# address, and your computers should each have their own 192.168.1.# number.

Try a factory reset on your router and see if that helps. If you give me the router make and model, I can look for new firmware that might help it.

[idtent]

Your internet service provider may have mac address to ip dhcp. You may need to call them and give them the mac address of the router.

I do understand that your computer works when plugging it directly, this is the problem.

Your router needs to obtain that 80.x.x.x ip address. Once it has done that, then you will be able to connect the two computers and they should get the 192.168.1.# number. This will allow an internal network, with semi-firewall protection from your router.

Unplug your modem from power. Remove the wan cable from the router (it has to be a router with a "wan" port or built in modem) Leave the power off for 15 minutes. Plug just the two computers into port 1 and two of the router. turn the pc's off, factory reset the router, reboot the router. Turn the pc's on. Check the ip addresses.

Open up a browser with the router config. Plug the modem power and the cable back into the wan port of the router. Find a status page for your router.

Do a release/renew on the ip status page of your router. Did it get the 80.#.#.# ip?

[Herr Kurm]

well thats a lots of help coming at me if u mean the tiny hole n the small button inside it (factory reset) then ive done it on modem and router. All the 3 days. My router is Infosmart labeled n i was able to find some long number under it Node ID:0040015196CD. Dunno if its the make or model or its birtdate. The wan liht is nicely green n both of the computer ones too.
It does get the same 80 sumthin IP when i release renew it. I tried it with router and modem and only modem. The same IP.

Unplug your modem from the router. reboot the router. release/renew on both computers, what do you get?
Should i plug my modem into the router when releasing renewing it or not?
Unplug your modem from power. Remove the wan cable from the router (it has to be a router with a "wan" port or built in modem) Leave the power off for 15 minutes. Plug just the two computers into port 1 and two of the router. turn the pc's off, factory reset the router, reboot the router. Turn the pc's on. Check the ip addresses.
I will try this combination.

[idtent]

What I am trying to do, is eliminate the modem from the equation.

We need to see if just the two computers plugged into the router will get the 192.168.1# addresses.

Once this is established, I think the router is fine. As far as release/renew, that should only be done on the pc, not the router yet.

Win 98 Instructions
Start - > Run
winipcfg
Click ok, choose the network adapter from the drop down box.
Click release, then renew

Win2k, xp, nt4
Start -> run
cmd
ipconfig /release
ipconfig /renew

[Herr Kurm]

Unplug your modem from the router. reboot the router. release/renew on both computers, what do you get?
After reseting and rebooting i used the renew release command on one computer n it gave me a beatiful Ip address like 192.168.1.# tried it on the other computer too but it told me not able to connect DHCp server. When i got back to my comp no 1 n tried the renew again it told me the same thing.
well now im off for 15 minutes

[idtent]

Sounds like your router is toast.

If it works once, then quits on the same computer, then there is a problem with the router.

I would try a new router. The release/renew should work all day on a working router.

So,
I am thinking about what you said. Computer one got 192 ip, computer 2 no IP. Then computer 1 got no ip?

If this is accurate, time for a new router.

[johnwill]

Normally, when you get a 169.254.x.x address, it indicates the machine is unable to find a DHCP server to obtain it's IP address. If you haven't already tried it, change the cable and the port on the router that you're connecting to...

[Herr Kurm]

you got it right. Thnx a lot for your help

[Herr Kurm]

the router was toast. Warranty guys told me that the chip was all black and burnt. XXXXXXX energy company

[The_Ditto]

Originally Posted by idtent

Open up a browser with the router config. Plug the modem power and the cable back into the wan port of the router. Find a status page for your router.

stupid question ... how do you get into the browser page for your router??
I have a router I need to have it release the ip/address (the router - not the pcs hooked up to it ..) .. and I need to "talk" with the router ..

How do I do this?? (I've never done this before) ..

My router is a Gnet IP104 ... if that helps ..

[Overclocked Doc]

Open your browser window and type in http://192.168.1.1 and hit "enter" (or just click on the address shown).
leave the "user name" blank and in the password box type in "admin" (with out quotes). This is assuming your router is similar to a Linksys router.

[The_Ditto]

Originally Posted by Overclocked Doc

Open your browser window and type in http://192.168.1.1 and hit "enter" (or just click on the address shown).
leave the "user name" blank and in the password box type in "admin" (with out quotes). This is assuming your router is similar to a Linksys router.

Tried that ..

entered: "http://192.168.1.1" .. hit enter .. it pondered the request for a while .. then came back with:

The page cannot be displayed
The page you are looking for is currently unavailable. The Web site might be experiencing technical difficulties, or you may need to adjust your browser settings.
..
blah ..

I'm on win98 .. does that make a diff?? .. I'll try it on a win2k machine ... ok, down that ... same message ...

any other ideas?? ... I'm stuck ...

[Overclocked Doc]

I'm on win98 .. does that make a diff?? .. I'll try it on a win2k machine ... ok, down that ... same message ...

That shouldn't make a difference. Either that router has had the address altered for security purposes or it is something completely different (my best guess at this point). Sorry I can't be of more help.

[The_Ditto]

if it was changed .. it was an accident ...

Is there anyway of figuring out what it is?? Any freeware or shareware something out there I might be able to use to figure it out??

[The_Ditto]

Ok .. got a bit further ...

I got the ip address of the router .. talked with a guy from work ..
ipconfig shows the gateway .. the gateway is essentially the router's ip address ..

I logged onto the router .. (changed the stinking thing's ip back to x.x.1.1) .. and everybody's happy ...


Ok .. now I'm onto the real problem I'm having. After doing some testing (with and without the router) ... I've noticed that without the router, Port 21, Port 50 and a few others work fine. However, with the router in place (and all factory default settings), Port 21, Port 50 and the others appear to be blocked ..

What gives??
I searched through the router menus .. I can't see anything that would indicate the port's to be blocked ...

How do I "unblock" a port???


Thanks ahead of time!!

[Overclocked Doc]

I believe what you need to do is called "port forwarding" or something similar. Here's an example from my router.



Note the ports used on the left and the machines address on the right.