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Forum Discussion
CM1200 modem
Can ADT and Roko be connected to the WAN ports of a CM1200 Modem? What are the pros and cons of set up my network that way?
4 Replies
No. This DOSIS 3.1 cable modem is intended to be connected to a consumer router. See the installation guide:
https://www.downloads.netgear.com/files/GDC/CM1200/CM1200_All_MSOs_QSG_EN.pdf
At the time this modem was introduced, it was not common to have Ethernet ports supporting higher than gigabit speeds on consumer products. Since DOCSIS 3.1 supports cable speeds greater than gigabit, this modem and a number of consumer routers featured Link Aggregation which uses more than one gigabit Ethernet link to support higher speeds.
More modern DOCSIS 3.1 modems have a single Ethernet port supporting 2.5 or even 10Gbit links. And, more modern consumer router also support Ethernet ports with higher speeds.
Link Aggregation has now "faded away".
LAG can be used with the CM1200 if you have a LAG supporting external wifi router.
weeeeeee wrote:
Can ADT and Roko be connected to the WAN ports of a CM1200 Modem? What are the pros and cons of set up my network that way?
At the time this modem was introduced,... this modem and a number of consumer routers featured Link Aggregation which uses more than one gigabit Ethernet link to support higher speeds.
LAG can be used with the CM1200 if you have a LAG supporting external wifi router.
but the CM1200 has four ethernet ports. ...!?
Retired_Member wrote:
but the CM1200 has four ethernet ports. ...!?
and absolutely no idea what the heck they were thinking.
- Maybe 4-port Ethernet modules were commonly available and cheap?
- Maybe they had a vague idea about aggregating more than two gigabit ports to get higher speed?
The modem supports exactly one consumer device. Could be a computer. Could be a router. (I suppose it) could be a Hulu box. But only one.
