Fixed IP for connected device?

[robotman]

I have a number of devices that get DHCP addresses from my cable modem. I'd like to assign one of these devices a fixed address or at least "lock" the address to the device it so the address doesn't change whenever I lose power.

I must be missing something, but I don't see any settings in the web GUI to configure *any* network settings. With my original Xfinity modem I was able to adjust network settings, change DNS settings, etc. I see nothing on the CM1150V.

Is there some hidden setting I'm missing? In other words, how do I get to *any* network settings on this box?

Thanks.

[antinode]

> [...] I see nothing on the CM1150V.

   Perhaps that's because a CM1150V is a modem, and address reservation
is a router function.  (Strictly, it's a DHCP server function, but, most
likely, your DHCP server is in your router.)

> Is there some hidden setting I'm missing? [...]

   It's "hidden" in your (unspecified) router.

> [...] how do I get to *any* network settings on this box?

   Typically, you don't; you get to them on your (unspecified) router.

   If Netgear made your (unspecified) router, then visit
http://netgear.com/support , put in your (actual) model number, and look
for Documentation.  Get the User Manual.  Read.  Look for "Address
Reservation" (or whatever)?

   If you don't _have_ a router (perhaps related to your believing that
your (unspecified) "my original Xfinity modem" was only a modem, and not
a modem+router), then you'd need to _get_ a router to use with your
CM1150V modem (which is only a modem).

[robotman]

Thanks for the response. I understand the difference, and that makes sense, but lets say I'm *only* using the Negear CMV... with my cable provider and plug in my laptop directly to the modem. I still get issued an IP address, get DNS etc.  As indicated in this diagram:

https://www.netgear.com/home/products/networking/cable-modems-routers/CM1150V.aspx

I would have thought there was some settings for that? For example if I wanted to use an alternate DNS provider?

[antinode]

> [...] plug in my laptop directly to the modem. [...]

> I would have thought there was some settings for that? [...]

   Not really.  You should be able to get to the settings on any DOCSIS
modem at "192.168.100.1", but I doubt that you'd find what you seek
there.  Without a router, your computer negotiates directly with your
ISP.  (With a router, the router negotiates directly with your ISP.)

> [...] I still get issued an IP address, get DNS etc.

   From your ISP.

> [...] For example if I wanted to use an alternate DNS provider?

   Tell your (unspecified) "my laptop"; the modem isn't interested (or
involved, except as a conduit).