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Forum Discussion
Fixed IP for connected device?
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 ...
> [...] 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).
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?
> [...] 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).