CHAPTER 4
IP Manager and DNS
If you have a fleet of AirLink modems or even if you only have one, it can be difficult to keep track of the current IP addresses, especially if the addresses aren’t static but change every time the modems connect to Verizon. If you need to connect to a modem, or the device behind it, it is so much easier when you have a domain name (car54.mydomain.com, where are you?).
Reasons to contact the modem and/or the connected device:
•Contacting a surveillance camera to download logs or survey a specific area.
•An oil derek that needs to be triggered to begin pumping.
•Sending text to be displayed by a road sign.
•Updating the songs to be played on a juke box.
•Updating advertisements to be displayed in a cab.
•Remote access to a computer, a PLC, an RTU, or other system.
•Monitoring and troubleshooting the status of the modem itself without needing to bring it in or go out to it.
A dynamic IP address is suitable for many Internet activities such as web browsing, looking up data on another computer system, data only being sent out, or data only being received after an initial request (also called Mobile Originated). However, if you need to contact your Raven X directly, a device connected to the modem, or a host system using your Raven X (also called Mobile Termi- nated), a dynamic IP won’t give you a reliable address to contact (since it may have changed since the last time it was assigned).
Domain names are often only connected to static IP addresses because of the way most domain name (DNS) servers are
•Dynamic IP addresses are granted only when your Raven X is connected and can change each time the modem reconnects to the network.
•Static IP addresses are granted the same address every time your Raven X is connected and are not in use when your Raven X is not connected.
Since many cellular providers, like
Raven X | 11 |
