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Ethernet has a self-assigned IP Address & will not be able to connect to the Internet
NETGEAR Nighthawk Multi-Gig Speed Cable Modem DOCSIS 3.1 for XFINITY by Comcast Two (2) Gigabit Ethernet port with auto-sensing technology. How do I set up this modenm so I can have one ethernet...
Two (2) Gigabit Ethernet port with auto-sensing technology.
This modem has auto-sensing technology.
What does that mean? I thought that meant for each port it would sense the connection and supply the neccessary connection requirments.
What am I missing?
what your missing is the xfinity only assigns 1 public ip address per modem unless you pay for a 2nd ip address or have a business grade account. Meaning you can only connect 1 device to the modem.
Its a limitation because of how xfinity does business.
there's other isp's that assign multple ip addresses per modem but xfinity is only 1 unless you pay for more.
So why did Comcast recommend this modem? I could have purchased the 1 port ethernet modem?
Not a big deal but sort of messed up my mesh network when I rebooted the modem to hardwire ethernet to my iMac.
The CM series of modems is good. Also the CM series support Link Aggregation as well. So if you have a external router that supports WAG on it's WAN side you have some flexibility of using both ports on the CM modem connected to 1 router with it's WAG enabled on it.
Nothing wrong in having additional ports.
Just have to remember that for your ISP, unless you ask and pay for the additional IP address, 1 port can only be used at a time on the CM modem.
Auto sensing is that when a lan cable connected to the modem is plugged in, the port will adjust the connection rate to what the connection rate is of the connected device, i.e. external routers or wired PC/laptops. Most devices nowdays are 1000Mpbs connection rate supporting, however the modem support 100 and I believe down to 10Mpbs for backwards compatibility.
