LOREX Technology LH330 EDGE2 - Manual (Page 122)

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Appendix B: Assigning a Fixed IP to your DVR
Appendix B: Assigning a Fixed IP to your DVR
When connecting to your DVR through a local area network (LAN), you have the option of
connecting to your system by entering the local IP of the DVR in a web browser. The local
IP of your DVR is like your home’s address. If someone wants to visit you, they need to know
your home address. Similarly, the local IP of your DVR is your DVR’s address.
The problem arises when the local IP address of the DVR changes. Imagine moving every
three months—nobody would ever be able to find you. To solve this problem, we can assign
a fixed IP address so that the local IP of your DVR will never change.
What’s the difference between DHCP and Fixed IPs?
DHCP
DHCP (Dynamic Host Configuration Protocol) allows your router to automatically assign an
IP address to devices that are connected to it. DHCP is a convenient method for connected
devices on your router to have an IP address immediately. This allows devices connected
to your router to work right away on the network.
In this example, your router has assigned an IP address to your laptop, your desktop, and
your DVR.
192.168.0. 82
192.168.0. 81
192.168.0. 83
Router
Example
Laptop
Computer
DVR
Each time the router restarts (due to power failure, etc.), there is no guarantee that the
router will assign the same IP address to your laptop, desktop, or your DVR. The router may
assign a new IP address to all of the devices connected to it. This can be a problem if you
want to connect to your DVR locally, since the IP address of the DVR has changed.
This can also create problems for remote connections, because your port forwarding rules
may be lost. Port forwarding requires you to specify the local IP address of your DVR. If that
address changes, the router will no longer be forwarding the ports to the correct address,
and you may have to re-configure port forwarding.