• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

Trouble with new cable modem

W

WhiteKnight

Platinum Member
I recently set up Comcast cable internet in my new house. I used my laptop to do the self-install and registration process. Now, I can't get the modem to associate with a different MAC, namely my router. If I spoof the MAC address, it works fine, but I'd like to be able to have it work without spoofing. I tried power cycling the modem, leaving it off for 30 min. This had no effect, and it still only works with the laptop's MAC. Any ideas?
 
Your laptop's MAC is associated with your cable account. Hard way around it, call Comcast and try and get them to change it around. Easy way, just leave the router's MAC spoofed with the laptop's MAC like most other people and voila, internet through the router. That's the reason that feature was put into the router, why not use it.
 
Exactly as stated above. Write that MAC down and tape it to the modem if necessary. I can use any MAC I want on mine, but I'll get a different IP. By using the same MAC, I've had the same "dynamic" IP for 4 years so far, boy that is sure handy🙂
 
Thanks for the suggestions. I am surprised that they don't let you use a different MAC automatically after some specified timeout.
 
Unlike DSL, that goes onto your private line. Cable TV/Internet is carried all over the system 9there is no separation between your line and your neighbors? lines).

So many ISPs use the MAC as part of the authentication (Password). Otherwise, every one can go to BB buy a Cable Modem for $20 and have free Internet.
 
In the past, I have just unplugged my cable modem, waited for about 60 -90 seconds, made sure I plugged the network cable into my main router and plugged the modem back in.
It always came back just fine. Has comcast changed something so that no longer works?
 
Strange, when I used to be a Comcast subscriber unplugging the power for a couple of mins. used to reset their system/modem and allowed the modem to hand off an IP to a device with different MAC address.

JackMDS: The MAC address Comcast and my local cable ISP use to authenticate is the HFC MAC not the computer's/router/whatever is after the modem's MAC.
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top