Arris surfboard sag-7580 ac blocks internet from my iPad only... iPhone and all other devices connect. Thee iPad never had a problem till today, it connects to the arris WiFi signal but won't go to any site. There are no parental controls on that I can see.

SOURCE: connecting my arris modem to x-box live

I have an Arris cable modem and use Xbox live. They work very well together. Most ISP's will only allow one active device at a time. When you switch between you cable modem and your Xbox you need to use a pen and press the reset button on the arris every single time you switch.

SOURCE: i have an arris tm602gct and cannot connect thru my netgear

Can you connect if you are directly wired into the router?

You may want to try using a ball point pen and pressing the reset button on the back of the arris. Let it reboot and try again.

Some netgear routers come with the wireless disabled out of the box, so you need to be hard wired when you run the CD or if you try to connect through your browser 192.168.1.1

SOURCE: Arris Modem won't work with Airport Express

Not sure how helpful this will be, as I'm running a different piece of gear, plus it requires both troubleshooting + ISP assistance.  I had a similar problem with my AirPort Extreme: AirPort Extreme saw the Arris, iBook saw the AirPort Extreme, but no internet connectivity.

1. In my case, I needed to set the AirPort to DHCP in the AirPort Utility application.
2. Power down the AirPort Extreme
3. Power down the Arris. You achieve this by unplugging the Arris *and* removing the back-up battery.
4. Wait a few moments.
5. Insert the battery into the Arris.
6. Plug in the Arris power supply.
7. Wait for the Arris to go through the restart protocol; when all the lights on the front panel are solid green, the start-up is complete.
8. Power up the AirPort Extreme; wait for the front panel light to go solid green.

SOURCE: Arris cable modem

if the power light is flashing then the modem is on battery backup and internet is disabled. plug the power cord into the modem or find a working power outlet, you should be set after that.

Power light flashing=bad

SOURCE: can't install linksys wrt54g2 router with arris tm602g modem

I've tried network magic and everything thing else and I still can't get it to work.