Managing the IzoT IP Address

The IzoT Router is configured to obtain a dynamic IP address from your IP network's DHCP server by default. This allows you to get started quickly.  You need to determine the router's current IP address to use the IzoT Router within your network or to access its configuration Web pages. You can determine your current IP address using the steps listed in the Determining the IP Address of Your IzoT Router topic.

To simplify installation, use a fixed IP address for your IzoT Router using one of the following two procedures:

  • You can configure your LAN DHCP server to assign a fixed address to the IzoT Router. This option is the easiest if you can configure the DHCP server on your LAN. If you select this option, you set up the IzoT Router to acquire its address using DHCP — this is the default. For more information, see Creating a Fixed IP Address with DHCP.
  • You can assign a static IP address to the IzoT Router.  For more information, see Configuring LAN and LON Network Options.

This section consists of the following:

Determining the IP Address of Your IzoT Router

You can determine the current IP address of your IzoT Router so that you can test communication between your computer and the IzoT Router, access the IzoT Router from other IP devices, and access the IzoT Server. To test communication between your computer and the IzoT Router and to determine your IzoT Router’s IP address, follow these steps using a computer with a Windows operating system:

  1. Create a LonTalk/IP Network Interface to use with the IzoT Router.

    1. Start the All Programs --> Echelon IzoT Network Services Utilities --> IzoT Network Services LonTalk-IP Interfaces application.

    2. Type a name such as LonTalk IP in LonTalk/IP interfaces, select the IP network interface from the IP Interface box (do not select a loopback interface), click Create, and close the LonTalk/IP Interfaces application.

  2. To open a Windows command console, click the Windows Start button, type cmd in the search box, and then press the Enter key.

  3. At the command prompt, enter NodeUtil –d<interfaceName>. Enclose the LonTalk/IP network interface name in quotes if there are any spaces in the name.
    For example:

    NodeUtil -d"LonTalk IP"
  4. Press the Service/Connect button on your IzoT Router to send Service and Connect messages. NodeUtil displays a message similar to the following:

    Received an ID message from device 1
  5. If you do not see any ID messages after pressing the Service/Connect button several times, check to see if UDP port 2541 is open on your computer’s firewall.

  6. Type G to go to a device, type 1 to go to device 1, and then press the Enter key.

  7. Type S to report device status and statistics to display status information about the IzoT Router. The last line of the display includes the IzoT Router’s IP address. You will need this address when you configure the router.

  8. Type N to preserve the router’s statistics. You can type Y instead to reset the router’s statistics counters.

  9. Type E to exit the device menu.

  10. Type E to exit NodeUtil.

  11. Close the command prompt.

Creating a Fixed IP Address with DHCP

You can create a fixed IP address for your IzoT Router by using a DHCP reservation. Most DHCP servers support DHCP reservations, though some DHCP servers use the term "static lease" instead of "DHCP reservation". This means the DHCP server is configured to always assign the same IP address to the same device given the device's MAC-ID. This gives you a fixed IP address while still using the DHCP server as a single point of configuring your device's IP network configuration.

The IzoT Router ships with the LAN (Ethernet) and LON (FT) MAC IDs printed on two labels. The LAN MAC ID label is next to the (LAN) connector, and the LON MAC ID label is next to the LON connector.

The documentation for your DHCP server provides the required steps to configure a DHCP reservation using the IzoT Router's LAN MAC ID. Remember to use the label next to the LAN port.

For example, the popular ISC DHCP V4 server is configured with a configuration file that you can find in /etc/dhcpd.conf. This accepts reservations with the global host definitions shown below:

host izot-router-01 {
    hardware ethernet 00:12:34:56:78:90; 

Restart your DHCP server if required by your DHCP and restart the IzoT Router for the assignments to take place.