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Modem only works with my MacBook and nothing else


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#1 juvanya

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Posted 07 November 2015 - 10:14 PM

Nevermind, everything suddenly works. It looks like Comcast just need to do a line test or whatever.

 

I just got Comcast Xfinity internet, whatever they call it, in my apartment. I bought my own modem because screw their $10/month charge. Even with hassles, I save money in a year.

 

Anyway, at first, there was a problem with the connection, so they had to wire a new one. Now, the internet works with my MacBook Pro and nothing else. Not the router, not my roommates PC, not his XBOX/Playstation/whatever. I have power cycled everything repeatedly as netgear genie and random help articles from google say, and nothing.

 

I have a MacBook Pro late 2009 running 10.6.8

The modem is Arris Surfboard SB6141

The router is Netgear N600 WNDR3400v3.

I dont know what my roommates devices are beyond what I said above.

 

Any help resolving this is greatly appreciated as always. I havent been here in ages, which is probably a good thing!


Edited by juvanya, 07 November 2015 - 10:29 PM.


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#2 Wand3r3r

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Posted 08 November 2015 - 12:32 PM

Comcast registered your mac's mac address for the connection.  Only that mac address can access the Comcast network.

 

This is where you have to "clone" the mac address of the mac to the wan port of the router.  You will see a button to this effect on the routers wan setup page.



#3 Jormeno1982

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Posted 10 November 2015 - 11:01 AM

Nevermind, everything suddenly works. It looks like Comcast just need to do a line test or whatever.

 

I just got Comcast Xfinity internet, whatever they call it, in my apartment. I bought my own modem because screw their $10/month charge. Even with hassles, I save money in a year.

 

Anyway, at first, there was a problem with the connection, so they had to wire a new one. Now, the internet works with my MacBook Pro and nothing else. Not the router, not my roommates PC, not his XBOX/Playstation/whatever. I have power cycled everything repeatedly as netgear genie and random help articles from google say, and nothing.

 

I have a MacBook Pro late 2009 running 10.6.8

The modem is Arris Surfboard SB6141

The router is Netgear N600 WNDR3400v3.

I dont know what my roommates devices are beyond what I said above.

 

Any help resolving this is greatly appreciated as always. I havent been here in ages, which is probably a good thing!

 

 

Hello,

 

What happens when you direct connect those devices to the modem and bypass your router? 


Don't settle for less, even a genius asks his questions. - 2pac


#4 Kilroy

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Posted 10 November 2015 - 05:47 PM

Normally the solution is to power off the modem and the router, power on the modem, power on the router.

 

The modem "remembers" the first device connected to it and it has to be power cycled or reset in order to "forget"  Comcast limits you to one IP address and that is the main reason for this issue.  If you had two, you could set up with the computer and then install the router without having to go through all of this.






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