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modem_brat's avatar
modem_brat
Follower
Jun 04, 2020

Netgear Modem CM1000 v2: How many devices can I connect?

I own the Netgear CM1000 v2 modem that I have connected to a netgear switch via Cat 7 Lan cable.

I can connect to the modem using my laptop, but the modem refuses to connect to my other home devices. 

 

My home network setup:

Wired: Modem--switch-->devices (not working: can connect the router and a laptop but the modem doesn't 'see' other devices)

Wireless: Modem-->switch-->Nighthawk 7000 router (works without any problems)

 

I called Xfinity and they confirmed that they aren't placing any limits on the number of connected devices on my modem.

 

When I connect o my modem via wireless, I can't see any options tha would allow me to examine/change the number of connected devices..

 

How can I resolve this problem?

1 Reply

  • antinode's avatar
    antinode
    Guru
    Jun 04, 2020

    > I own the Netgear CM1000 v2 modem that I have connected to a netgear
    > switch via Cat 7 Lan cable. [...]

     

       Not a good plan.  (And "a netgear switch" is not a very detailed
    description of that device.)

     

    > Wired: Modem--switch-->devices (not working: can connect the router
    > and a laptop but the modem doesn't 'see' other devices)

     

       Yup.  Less vaguely, additional devices are not getting connected to
    your ISP through the modem.

     

    > Wireless: Modem-->switch-->Nighthawk 7000 router (works without any
    > problems)

     

       Yup.  And you should be able to get the same results if you remove
    the switch.  (Assuming that "Nighthawk 7000" means "R7000".  Look at the
    product label.)


    > I called Xfinity and they confirmed that they aren't placing any limits
    > on the number of connected devices on my modem.

     

       Not strictly true.  They limit you to one device (one external IP
    address).  That one device is normally a NAT router (like, say, an
    R7000) which would allow your one external IP address to serve multiple
    devices.  Whoever you talked to probably assumed that you had a router
    connected to your modem, and they don't limit the devices attached to
    your router.

     

    > How can I resolve this problem?

     

       Connect your modem to a router (WAN/Internet port), and connect your
    client devices to that router.  If you have too many wired devices for
    the LAN ports on the router, then you can connect a network switch to a
    router LAN port, and then connect more devices to that switch.