Please help, I purchased the Netgear CM1200 to hard wire my computer, PS4 and smart TV, set Up is successful through desktop and IP address is acquired at desktop, but when connecting a smart tv, gaming console, or even a router, the modem will not provide an IP address, IP address acquiring times out and fails on the devices, a have tried 2 different CM1200 thinking the first one was defective, what can be causing this??

Ok, Netgear needs to clarify this on their description of the device, it is advertised as being to have multiple devices connected, and LAG working on port 1 and 2 only, and supporting 4 different ISP's by having a business account, also i did attempt to set up NETGEAR - Nighthawk X6 AC3200 to it since i bought them together and was not going to use LAG, but also failed to provide an IP address to the Router, and confirmed the router is good by setting it up to a CM1000. But thanks for the replies

Are you using the LAN ports in back for your other LAN devices. If so, then this will not work. The other LAN ports are meant for LAG or business class static IP addressing configurations for use with external routers connected. For home use, you need a wifi router connected to LAN port 1. All the other ports are disabled.

LAN port #1. Besure to power OFF both CM and XR units for 1 minute. Then power ON the CM modem and let it sync. Then power ON the XR router. XR router WAN led should blink amber then white after getting connected. Try a factory reset on the XR router and walk thru the setup wizard while it's connected to the CM modem. Ensure your using good quality CAT6 lan cabling between the modem and router. Themarkofj wrote:hey netgear i have purchase the cable modem netgear cm1200 i try to connect my netgear xr500 from cable modem lan port 1 2 3 4 which lan port is link aggregation!? which port on the netgear cm1200. i use to connect my netgear router xr500 to get internet access cause when i connect the modem and router my netgear xr500 router the internet port from the router is orange/red light and other light are soild white having issue getting it online when i turn off the modem and router i get all soild white light on the router then goes back orange/red light on the internet port netgear xr500! ; link aggregtion is disabled by default on the cm1200 modem so im not sure what the problem!

Bay_Area650 wrote:Ok, Netgear needs to clarify this on their description of the device, it is advertised as being to have multiple devices connected, and LAG working on port 1 and 2 only, and supporting 4 different ISP's by having a business account, also i did attempt to set up NETGEAR - Nighthawk X6 AC3200 to it since i bought them together and was not going to use LAG, but also failed to provide an IP address to the Router, and confirmed the router is good by setting it up to a CM1000. But thanks for the repliesI very much agree with this. The language on the data sheet for the CM1200 reads "4 Gigabit ports to connect more wired devices" and then goes on only to detail LAG in multiple places. There's no indication for how else these ports are to be used or clarification that these are in fact not supposed to be directly connected to other devices. For reference, I'm using the CM1200 with a Google/TP-Link OnHub (only one LAN port) and a TP-Link 8-port switch for PC, Nvidia Shield TV, and Philips Hue Hub. I was very much hoping to eliminate the switch from the setup, but based on the information provided here (and not directly from Netgear), it sounds like that's not possible with the CM1200.

jableux wrote:Bay_Area650 wrote:Ok, Netgear needs to clarify this on their description of the device, it is advertised as being to have multiple devices connected, and LAG working on port 1 and 2 only, and supporting 4 different ISP's by having a business account, also i did attempt to set up NETGEAR - Nighthawk X6 AC3200 to it since i bought them together and was not going to use LAG, but also failed to provide an IP address to the Router, and confirmed the router is good by setting it up to a CM1000. But thanks for the repliesI very much agree with this. The language on the data sheet for the CM1200 reads "4 Gigabit ports to connect more wired devices" and then goes on only to detail LAG in multiple places. There's no indication for how else these ports are to be used or clarification that these are in fact not supposed to be directly connected to other devices. For reference, I'm using the CM1200 with a Google/TP-Link OnHub (only one LAN port) and a TP-Link 8-port switch for PC, Nvidia Shield TV, and Philips Hue Hub. I was very much hoping to eliminate the switch from the setup, but based on the information provided here (and not directly from Netgear), it sounds like that's not possible with the CM1200. Wow, this sucks but makes sense. I only spent $200 for the CM1200 under the impression it could assign IPs to all 4 ports. In my mind the public IP hits my modem and from that point can assign private IPs to the router (linksys velop) and my hardwired PC. The packaging and over confident best buy employee made me think this was easily doable. Guess I'll return this high priced item and buy a cheap modem since I can't get speeds over 200mbps anyway

Netgear CM1200, No IP address gaming console or router

19 Replies

FURRYe38
Guru - Experienced User
Jun 18, 2019
Are you using the LAN ports in back for your other LAN devices. If so, then this will not work. The other LAN ports are meant for LAG or business class static IP addressing configurations for use with external routers connected. For home use, you need a wifi router connected to LAN port 1. All the other ports are disabled.
- Bay_Area650
  Tutor
  Jun 18, 2019
  Yes, i am using the Lan Ports on the devices connected to the CM1200 Modem, if what you are saying is True, then i do not see how my Desktop being in port 1 and laptop being in port 3 both have internet, and acquired IP addresses. But thank you for the feed back
  - FURRYe38
    Guru - Experienced User
    Jun 18, 2019
    Any any rate, you need a main host router connected to the CM modem, then you'll have full access and be able to connect many devices to the router. The modem is just an interface device between the ISP service and your router that you connect devices too. The CM1200 is a nice modem. If you fully wanted to take advantage of the modem, you could get a R7960P router from NetGear and enable Link Aggregation on both the CM1200 and R7960P for some good bandwith capabilities. This works well as I tested this out for NG.

Forum Discussion

Netgear CM1200, No IP address gaming console or router