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Assigning a Fixed IP Address 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—also known as a static 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.

For example, your router assigns an IP address to your laptop, your desktop, and your 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.

Fixed IPs

Setting a fixed IP on the router tells the router to reserve an IP address to a particular device. The fixed IP number is saved onto the router, and remains saved even if the router is powered off. Likewise, a fixed IP address must also be specified in your DVR so that even if your DVR turns off, the IP address of the DVR remains the same. The fixed IP address must be assigned in the router and DVR. The end result is that you can power on and off the router and DVR, and the router will always assign the same IP address to the DVR.


Setting up a fixed IP

Creating a fixed IP must be done on both the router and DVR.

NOTE: These are guidelines on how to create a fixed IP. Refer to the DVR & Router’s owner’s manual for details.

To create a fixed IP on the DVR:

  1. Disable DHCP on the DVR
  2. Assign the designated local IP address of the DVR

To create a fixed IP on the router:

  1. Write down the MAC address of your DVR
  2. In the "DHCP Reservation List", enter the DVR’s MAC address, and the desired IP that you
    wish to reserve

NOTE: The terminology varies between routers. "DHCP Reservation List" is an example only. Consult your router’s user’s manual for details.

Scenario Example

NOTE: The following scenario example is based on the Lorex Edge series (LH300 series) DVR, and the Trendnet TEW-652BRP router. The instructions below are for reference only.

Step 1 of 2: Enter the desired fixed IP address in the DVR

  1. Open the LAN menu (Main Menu >LAN)
  2. Beside IP, Enter the desired IP address. This IP address must be in the range specified by
    your router
  3. Beside DHCP Enable, Disable DHCP. Right-click to save your settings

About IP Ranges
It is recommended to set the fixed IP address below the scope of your router. For example, if the router assigns an address ending between 100-254, choose an address between 2-99.

Step 2 of 2: Enter the desired fixed IP address in the router

Prerequisites:

  • Obtain the DVR’s MAC address

To enter a fixed IP into the router:

  1. Under the main menu, click on LAN & DHCP Server
  2. Configure the following:
    • Static DHCP: Select Enabled and then click Apply
    • Name: Enter the desired name of your device
    • IP Address: Enter the IP address that you wish to make static. This IP address must be the
      same address specified in the DVR
    • MAC Address: Enter the MAC address of your DVR

  3. Click Add
    • The DVR info appears in the Static DHCP list

Once the DVR has been added to the Static DHCP list, you have successfully created a fixed IP address for your system.

 

Last Updated: 4/18/2012

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