I currently have internet service with AT&T and high speed. I just
installed a CCTV (Closed Circuit TV System) and the tech advised that I need a
static IP address. AT&T wants to charge me an outrageous monthly fee for a
static IP address. I found info on the internet on how to set up the static IP
address. If I do this myself, will I lose my AT&T DSL service or will I
still also have to have a dynamic IP address and the internet service? Thanks in
advance for any info you can provide.
In this excerpt from
Answercast #13, I describe the way static IP addresses work and question if
it is needed for your connection.
Become a Patron of Ask Leo! and go ad-free!
How a static IP address works
In order for things to be found on the internet (your machine, for example, in
this case), your ISP has to know how to route the data to your computer. If you
just set a new static IP address on your computer or on your router, your ISP
won’t know about it and it won’t know how to get data to you.
As a result, yes, you will lose your connectivity when that happens.
Assigning a static IP address
A static IP address, in order to be useful, must be assigned by the service
that you’re connecting to (in this case, your ISP.)
In this case, AT&T has to actually assign you the static IP address. They
will tell you what the IP address is. It’s only then that, with that IP address
in hand, you go into your router or your PC and configure that static IP
address for use.
Unfortunately, there’s really no way around this. The static IP address,
like any IP address, is assigned by your internet service provider. If they
want to charge an outrageous fee for it, they can.
It is additional work on their part. Non-static IP address are all handled
automatically. Static IP addresses have to be manually assigned, so there’s
manual intervention and some amount of maintenance involved in making sure it
continues to work.
Do you need a static IP address?
So, unfortunately, I don’t know a way around this for you.
I would question whether or not you actually need a static IP address. It’s
very possible that your dynamic IP address won’t change very often and that
could be enough.
Ultimately, it all depends on exactly how you’re attempting to use this
system and why the service person suggested a static IP address in the first
place. Sometimes, there are workarounds, but the workarounds depend very heavily
on exactly what it is you’re trying to do.