Static Ip or Dynamic?

ionbasa · 08 Oct 2010

Okay so I just started using opendns, well becouse they have a realy big rang of dns entries.
I decided to set up my modem which is a westell 327w. This router has a built in wifi ap, I have had this router ever since 2002 with verizon(its the one they gave me for free.)

For me to select my own cutom DNS servers the router needs to disable dhcp.

Before it looked like this:

Now it looks like this:

My question will I get charged from my dsl provider( Verizon) for not using DHCP?

Bill2 · 09 Oct 2010

You are confusing between an EXTERNAL (PUBLIC) static IP and an internal (private) IP. When you disable DHCP, you assign INTERNAL static IPs to the various computers on your INTERNAL network. When DHCP is enabled, this job is done by the router dynamically. Neither of these options affects your public ip address.

In short, your GATEWAY (router) has your Public IP address, and the computers in your networkhave private IP Addresses. So, there is an outside and an inside. Anyone "out there" can see your public IP, but only machines inside your own network know each other's individual private IP addresses (dynamic or static).

Your ISP will charge you if you request a PUBLIC static IP. E.g., if you want to host a website or a server from your home. With a static public IP, anybody can type that into the address bar and be directed to your website. E.g. typing http://74.125.45.100/ into your browser will take you staright to Google because that is Google's public IP.

ionbasa · 09 Oct 2010

so the settings I changed shouldn't affect my puplic ip adress?

look at the box thats highlited, it requests a specific IP and specific Gatway, but if I turn on DHCP, these setting are automaticaly adgusted.

Bill2 · 09 Oct 2010

For your modem config, suggest you consult its manual or get in touch with Verizon. BTW, does that screen actually let you change the gateway IP? Your modem is in bridge mode so the gateway IP would be the Public IP assigned by Verizon.

Crispy · 09 Oct 2010

ionbasa, Leave it assigned by DHCP unless you multiple computers and have dedicated IP address that you want assigned.

ionbasa · 09 Oct 2010

Bill2 said:

For your modem config, suggest you consult its manual or get in touch with Verizon. BTW, does that screen actually let you change the gateway IP? Your modem is in bridge mode so the gateway IP would be the Public IP assigned by Verizon.

Yes, my modem lets me asign my own gatway ip. I know that this is usualy asigned by verizon, I dont have the documentation anymore, and even if i could find it on the interent, verizon makes their own firmware for this box.

ionbasa, Leave it assigned by DHCP unless you multiple computers and have dedicated IP address that you want assigned.

Actualy this is for external, the DHCP for the external connection is disabled, but my inner network IP, 192.168.1.2 - 192.168.1.254 Still have it enabled, and then I have a printer and an ps3 which I asingned static/fixed IPs to for reliability, but of course that is outside the DHCP asigned IPs

ionbasa · 09 Oct 2010

Okay new question. If you read my above post, and I can set my own gateway adress, isn't that bad. In a sence that I might get charged by verizon. Curently I was using Dynamic (public) IP, but if I set the default in the menu it will be static.

My fear: I might get charged by verizon, but rarelly does our dynamic IP change. I know this for a fact becouse it has't changed in 3.5 years.

What do you guys think?

(sorry for the duble post)

Tepid · 09 Oct 2010

ionbasa said:

Okay new question. If you read my above post, and I can set my own gateway adress, isn't that bad. In a sence that I might get charged by verizon. Curently I was using Dynamic (public) IP, but if I set the default in the menu it will be static.

My fear: I might get charged by verizon, but rarelly does our dynamic IP change. I know this for a fact becouse it has't changed in 3.5 years.

What do you guys think?

(sorry for the duble post)

You can set that however you want.
They should not just start charging you just cause you change it there.
The IP address will either be right or wrong. If it's wrong, no internet.
You would need to contact them requesting a Static Public IP to be charged.
Or at least I would hope so. Who knows. I would ask them though.

ionbasa · 09 Oct 2010

So as long as it is set to the default gatway Ip w/o puplic DHCP, i should not be charged? Verizon always has hidden ways and excuses to get you'r money