A number of networking questions

Rebel Shuttle · 06-20-2008, 12:31 AM

My computer is ordinarily connected to a router for internet access rather than directly to the modem. Whenever I do plug my computer directly to my modem however, I get limited or no connectivity. I am unsure why and I was wondering what might cause that.

My router acts as a proxy between the DNS and my computer, preventing me from getting the correct IP addresses of the DNS. I'm wondering if I could find the correct IP addresses by plugging my computer directly into my modem.

**lazareth1** · 06-20-2008, 01:09 AM

Your getting limited or no connectivity because the modem needs to detect the hardware address of your computer to effectivily communicate on the web etc.

So plug the modem directly into your computer, and then unplug the power to your modem, leave for 30 secs, and then plug back in. This should fix the problem.

PS. You will have to do this if you want to plug the modem back into the router.

Rebel Shuttle · 06-20-2008, 01:34 AM

I tried it but it didn't fix the problem.

**lazareth1** · 06-20-2008, 01:43 AM

ok with the modem connected, click start > run and then type cmd and press enter. Now type ipconfig /all and copy and paste the output for me to have a wee nosey at

.

Rebel Shuttle · 06-20-2008, 02:16 AM

Windows IP Configuration

Host Name.............................................: acer-511eba12df
Primary Dns Suffix....................................:
Node Type.............................................: Unknown
IP Routing Enabled...................................: No
WINS Proxy Enabled.................................: No

Ethernet adapter Local Area Connection

Connection-specific DNS Suffix..................:
Description............................................: Generic Marvell Yukon Chipset based
Ethernet Controller
Physical Address....................................: 00-19-21-5C-17-D6
Dhcp Enabled........................................: Yes
Autoconfiguration Enabled.......................: Yes
Autoconfiguration IP Address...................: 169.254.36.134
Subnet Mask.........................................: 255.255.0.0
Default Gateway....................................:

**lazareth1** · 06-20-2008, 02:29 AM

Ok. Now try clicking on start > run and type in cmd then enter. Now type ipconfig /release and press enter. Then type ipconfig /renew.

try the internet now. If it still doesn't work, then do a ipconfig /all again and let me see if anything's changed.

Rebel Shuttle · 06-20-2008, 02:46 AM

So, I replugged my computer to the modem and typed ipconfig /release and got the following message:

IP Address for adapter Local Area Network has already been released.

Then I inputted ipconfig /renew and after a slight delay got the following message:

An error occurred while renewing interface Local Area Connection : unable to contact your DHCP server. Request has timed out.

I haven't done an ipconfig /all yet as I wanted to post this.

**lazareth1** · 06-21-2008, 08:58 PM

The only other reason I can think of it not working is that you ISP has some sort of filtering enable to stop other computers from using the internet. (My ISP in UK did this) Contact your ISP and explain your situation to them. They should be able to help.

Rebel Shuttle · 06-22-2008, 10:28 PM

Ok. Thank you for your help.

**lazareth1** · 06-22-2008, 10:31 PM

No probs drop by again if ya have any more questions

johnwill · 06-23-2008, 06:26 AM

You realize that you MUST power cycle the modem whenever the attached device changes, right?

**lazareth1** · 06-23-2008, 06:34 PM

Yeah I think he does. It was the first thing I asked him to do

.

06-20-2008, 12:31 AM	#1 (permalink)
Rebel Shuttle Registered User Join Date: Apr 2008 Posts: 31 OS: Windows XP SP2	A number of networking questions My computer is ordinarily connected to a router for internet access rather than directly to the modem. Whenever I do plug my computer directly to my modem however, I get limited or no connectivity. I am unsure why and I was wondering what might cause that. My router acts as a proxy between the DNS and my computer, preventing me from getting the correct IP addresses of the DNS. I'm wondering if I could find the correct IP addresses by plugging my computer directly into my modem.

06-20-2008, 01:09 AM	#2 (permalink)
lazareth1 Networking/Hardware Jedi Join Date: Jun 2008 Location: Hong Kong, previously Fife in Bonnie Scotland Posts: 972 OS: Vista SP1, Ultimate My System	Re: A number of networking questions Your getting limited or no connectivity because the modem needs to detect the hardware address of your computer to effectivily communicate on the web etc. So plug the modem directly into your computer, and then unplug the power to your modem, leave for 30 secs, and then plug back in. This should fix the problem. PS. You will have to do this if you want to plug the modem back into the router. __________________ "Nothing is True, Everything is Permitted" JAFFA KREE!! Peace Through Power!!

06-20-2008, 01:34 AM	#3 (permalink)
Rebel Shuttle Registered User Join Date: Apr 2008 Posts: 31 OS: Windows XP SP2	Re: A number of networking questions I tried it but it didn't fix the problem.

06-20-2008, 01:43 AM	#4 (permalink)
lazareth1 Networking/Hardware Jedi Join Date: Jun 2008 Location: Hong Kong, previously Fife in Bonnie Scotland Posts: 972 OS: Vista SP1, Ultimate My System	Re: A number of networking questions ok with the modem connected, click start > run and then type cmd and press enter. Now type ipconfig /all and copy and paste the output for me to have a wee nosey at . __________________ "Nothing is True, Everything is Permitted" JAFFA KREE!! Peace Through Power!!

06-20-2008, 02:16 AM	#5 (permalink)
Rebel Shuttle Registered User Join Date: Apr 2008 Posts: 31 OS: Windows XP SP2	Re: A number of networking questions Windows IP Configuration Host Name.............................................: acer-511eba12df Primary Dns Suffix....................................: Node Type.............................................: Unknown IP Routing Enabled...................................: No WINS Proxy Enabled.................................: No Ethernet adapter Local Area Connection Connection-specific DNS Suffix..................: Description............................................: Generic Marvell Yukon Chipset based Ethernet Controller Physical Address....................................: 00-19-21-5C-17-D6 Dhcp Enabled........................................: Yes Autoconfiguration Enabled.......................: Yes Autoconfiguration IP Address...................: 169.254.36.134 Subnet Mask.........................................: 255.255.0.0 Default Gateway....................................:

06-20-2008, 02:29 AM	#6 (permalink)
lazareth1 Networking/Hardware Jedi Join Date: Jun 2008 Location: Hong Kong, previously Fife in Bonnie Scotland Posts: 972 OS: Vista SP1, Ultimate My System	Re: A number of networking questions Ok. Now try clicking on start > run and type in cmd then enter. Now type ipconfig /release and press enter. Then type ipconfig /renew. try the internet now. If it still doesn't work, then do a ipconfig /all again and let me see if anything's changed. __________________ "Nothing is True, Everything is Permitted" JAFFA KREE!! Peace Through Power!!

06-20-2008, 02:46 AM	#7 (permalink)
Rebel Shuttle Registered User Join Date: Apr 2008 Posts: 31 OS: Windows XP SP2	Re: A number of networking questions So, I replugged my computer to the modem and typed ipconfig /release and got the following message: IP Address for adapter Local Area Network has already been released. Then I inputted ipconfig /renew and after a slight delay got the following message: An error occurred while renewing interface Local Area Connection : unable to contact your DHCP server. Request has timed out. I haven't done an ipconfig /all yet as I wanted to post this.

06-21-2008, 08:58 PM	#8 (permalink)
lazareth1 Networking/Hardware Jedi Join Date: Jun 2008 Location: Hong Kong, previously Fife in Bonnie Scotland Posts: 972 OS: Vista SP1, Ultimate My System	Re: A number of networking questions The only other reason I can think of it not working is that you ISP has some sort of filtering enable to stop other computers from using the internet. (My ISP in UK did this) Contact your ISP and explain your situation to them. They should be able to help. __________________ "Nothing is True, Everything is Permitted" JAFFA KREE!! Peace Through Power!!

06-22-2008, 10:28 PM	#9 (permalink)
Rebel Shuttle Registered User Join Date: Apr 2008 Posts: 31 OS: Windows XP SP2	Re: A number of networking questions Ok. Thank you for your help.

06-22-2008, 10:31 PM	#10 (permalink)
lazareth1 Networking/Hardware Jedi Join Date: Jun 2008 Location: Hong Kong, previously Fife in Bonnie Scotland Posts: 972 OS: Vista SP1, Ultimate My System	Re: A number of networking questions No probs drop by again if ya have any more questions __________________ "Nothing is True, Everything is Permitted" JAFFA KREE!! Peace Through Power!!

06-23-2008, 06:26 AM	#11 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 30,228 OS: XP-Pro, Vista, Linux Blog Entries: 1	Re: A number of networking questions You realize that you MUST power cycle the modem whenever the attached device changes, right? __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

06-23-2008, 06:34 PM	#12 (permalink)
lazareth1 Networking/Hardware Jedi Join Date: Jun 2008 Location: Hong Kong, previously Fife in Bonnie Scotland Posts: 972 OS: Vista SP1, Ultimate My System	Re: A number of networking questions Yeah I think he does. It was the first thing I asked him to do . __________________ "Nothing is True, Everything is Permitted" JAFFA KREE!! Peace Through Power!!