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Connecting through router works, direct internet connection fails


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blargus3's Avatar
blargus3 blargus3 is offline
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14-Aug-2009, 05:27 AM #1
Connecting through router works, direct internet connection fails
I need a direct connection to the internet. A connection straight from the modem to the computer with no routers involved. I am able to connect to the internet using my router (wired, not wireless). However if I try to connect directly to the internet through the modem it doesn't work. I have a broadband connection, always running. I don't understand the problem. Why would connecting through a router work but a direct connection fail? I tried power cycling the modem about 10 times and it's not working. Yet it will connect through the router every time without fail. Is there some kind of configuration I need to change? Any help would be appreciated.

I'm running windows xp and my ISP is comcast.
Curly's Avatar
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14-Aug-2009, 07:33 AM #2
Shutdown your computer. Connect it directly to the modem. Reset your modem and wait for it to sync with Comcast then turn on your computer.

Make sure your computer is set to receive an IP address automatically, then renew its IP address by running ipconfig /config then ipconfig /renew. Does it work now?
JohnWill's Avatar
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14-Aug-2009, 08:38 AM #3
By "reset" Curly means to turn off the power for 30 seconds or more.
Curly's Avatar
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14-Aug-2009, 12:17 PM #4
Not unless it has an actual Reset button. And Comcast recommends that when power cycling your modem, leave it unplugged for 2 minutes.
JohnWill's Avatar
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14-Aug-2009, 02:45 PM #5
Comcast is pretty conservative, truthfully when I had Comcast, a few seconds was all it took.
TerryNet's Avatar
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14-Aug-2009, 08:27 PM #6
Please show for a connection to the modem ...

Start, Run, CMD, OK to open a command prompt:
(For Vista or 7 type CMD in the Search box after Start)

Type the following command:

IPCONFIG /ALL

[Note that there is no space between the slash and ALL.]

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

If necessary use a text file and removable media to copy the results to a computer with internet access.
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