Question about Arris Touchstone 450a (CM450) Modem

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Switched to cable(arris modem) can't set up network

Since I switched to a bundled cable pkg. I've been unable to set up my network. My netgear router can't seem to work with the arris modem, and my belkin adapter can't pick up the signal. It's driving me nuts as I've tried everything. Cable says it's the router, they say it's the modem, they say it's the adapter etc. Cable said their system is too fast for my router. Help me!

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  • willie Dec 30, 2008

    I have one pc hard wired to the arris modem. I am trying to set-up network with a router and wireless adapter (netgear router, belkin adapter) everthing was working until I switched to cable from dsl. Now I'm unable to setup the network.

  • willie Dec 31, 2008

    Thanks, I tried that but it still does not work. The new modem is a telephony one one with a battery back-up so I believe that this may be the problem. Since, I unplug, (to power down) but it may still not fully be down to reconize the netgear router since it has a battery back-up (2 hrs).

  • hwilliams107 Jan 08, 2009

    i switched to time warner all in one package and cant get arris touchstone modem to work with my wirelsss linksys wrt54g. Im plugged in right now with modem and can connect just fine?

  • pddeboy Jan 19, 2009

    Just bought a brand new D-Link router thinking it was a router problem. The connection just goes up and down constantly on the wireless.

  • susanadd Jan 19, 2009

    i try to connect to router to the modem linksys wr54g and dlink same problem can;t get conection

  • Anonymous Feb 25, 2009

    can't sign in to roadrunner. keeps asking for id number on modem

    to verify account information.

    there are five numbers on side and one number on back all with barcodes and one without.

    timewarner customer service has taken the service out of customer service.

  • djxtreme979
    djxtreme979 May 11, 2010

    I need a clear picture of what you are trying to do. cable modem to pc. Are you wireless or no. how many pc's. That sort of thing.


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Providors use mac address to identify the modems used on their systems. That is why, if you add a wireless router, the router software should have the ability to let you copy the MAC address of the modem. That way the providor only sees one mac address.

Posted on Mar 13, 2013

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This will work i did for my aris cable modem.

Remove the Backup battery
Unplug power from the modem
Plug the new router into cable modem (while the modem is still off)
Wait for the router to have its lights runnning.
power the cable modem.
put battery back in

this worked me when i switched from my buffalo router to dlink and tried also with directly to my computer and it let it work.

i guess the cable modem remembers mac addressses or something and if it doesn't match then it won't go through (but that's a guess)

Posted on Aug 02, 2009

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Cable dsl same thing. Did you switch providers and get new modem from them? If so. Just delete previous netowrk and install new one let pc discover new one. Also, with your router you got a disc. It should install correctly. Perhaps it is previous network that is hindering you.

Posted on Dec 30, 2008

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