New CM1200 - self-assigned IP address via Ethernet Connected Laptop - NO Internet

> Using Macbook Pro laptop connected via Ethernet directly in one of the
> ports on back of CM1200.

> [...] The other 3 ports in the back of the CM1200 are Ethernet to:
> [...]

   The CM1200 is a modem, not a modem+router.  How many devices were you
expecting to connect to it?  (Hint: For typical residential service,
more than one is probably the wrong answer.)

> [...] and of course Ethernet to router.

   Your (unspecified) "router" would be a good choice for that one
device to be connected to the CM1200.

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual.  Read.  Look for "LAN ports"
and "Connect Your Cable Modem to a Computer" (and the "Note" there).

   You have to admire the oblivion of the author/editor of a User Manual
for a cable modem which offers advice like:

      For more information, see the cable modem's user manual.

> I have attached a screenshot of what the Network settings look like.

   Most likely, your ISP will provide one external/public IP address to
your device(s).  If your router is working as expected, then I'd guess
that the router got it.  After that, I'd expect other devices to get
less cooperation from your ISP.

> Does anyone have advice on how to fix this?

   Connect (only) your router to your modem.  Connect your client
devices to your router.