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Forum Discussion
NightFlyer80
Mar 25, 2021Aspirant
Using all 4 Ports
please note my CM1200 is not a router, just a modem. I bought this modem with the intention to use 3 of the 4 LAN ports at once. I have since been told that this is not possible with a modem. This ...
plemans
Mar 25, 2021Guru - Experienced User
For the majority of ISP's only 1 device can be connected to the CM1200 on a consumer grade plan.
Business class lines or people on consumer plans who pay for extra IP address can use more. Most people don't.
Who's your ISP?
- NightFlyer80Mar 25, 2021AspirantI have Cox internet at my house. We have the gigablast plan.
- NightFlyer80Mar 25, 2021Aspirantcan I use a switch with this modem to get more devices connected to it?
- antinodeMar 25, 2021Guru
> can I use a switch with this modem to get more devices connected to
> it?No. If your ISP gives you one external IP address, which would be
typical, then you need to connect a NAT router, ONLY, to your modem.
Your client devices would be connected to that router.
The problem with the modem is not a shortage of ports, it's a
shortage of brains, which is what the NAT router provides.- NightFlyer80Mar 25, 2021AspirantThank you.