Cannot access NION using IP address or IP address is unknown

There are two main solutions to this problem:

• Use NDP to discover the NION on the network and assign an IP address (see Using NDP to discover network devices and assign network settings in the NWare User Guide).
• Use a serial cable to connect directly to the NION and assign and IP address.

Using a direct serial connection to assign an IP address

This section explains how to connect to a NION directly via the serial port and change the IP address settings. This is only necessary under the following circumstances:

• The NION does not appear on the Remote Log tab in NWare and Pandad is functioning (i.e. other NIONs on the same network are listed). If you need to check to see if Pandad has stopped working, see Determining if Pandad has stopped functioning.
• The NION is listed on the Remote Log tab, but when you right-click it and then click Launch Web Interface, the web interface is not displayed.
• You need to access a NION using its IP address, but the address is unknown and you are unable to run NWare to discover all the NIONs on the network.

Caution: It is very important that you only complete the steps in this section when under instruction from MediaMatrix Technical Support. It is possible to lose data stored on the NION or to stop it from booting if you specify settings incorrectly.

Note: The first procedure below assumes that the key used to stop the NION boot sequence is ESC, which is the default setting. This is specified by the bootstopkey environment variable. If you do not know the appropriate key and are unable to stop the boot sequence, contact MediaMatrix Technical Support.

Tips:

• If the NION is fitted with a front panel, you can change the IP address using the front panel interface. For more information, see Setting the IP address.
• If the NION has been assigned correct IP settings, but you are still unable to start the web interface, this may be because the IP address of your PC is not compatible with the IP address of the NION. Consider changing the IP address of your PC so that it can communicate with the NION. The format of the NION IP address will be shown in the URL used when attempting to start the web interface.

To connect to the NION via the serial port

1. Connect a serial cable between the PC serial port and the serial port on the MediaMatrix node.
2. Start a terminal emulator program, then specify connection settings to match those already specified on the MediaMatrix node. For example:
   • baud rate 57600
   • 8 bit data
   • no parity
   • 1 stop bit
   • no flow control.
3. Power cycle the NION.
4. As soon as the NION starts to boot up (and the fans can be heard), continuously press the ESC key.

   A command prompt like this => will be displayed in the console window.

5. Press Enter.

To specify a static IP address

1. Type setenv dhcp no and press Enter.
2. Type setenv ipaddr <IP address> and press Enter.
3. Type setenv netmask <subnet mask> and press Enter.
4. If you want the settings to be saved and used each time the NION boots, type saveenv and press Enter.

   If you omit this step, the settings will only be used for the current session.

5. Type boot and press Enter.

To specify an IP address automatically using DHCP

1. Type setenv dhcp yes and press Enter.
2. If you want the settings to be saved and used each time the NION boots, type saveenv and press Enter.

   If you omit this step, the settings will only be used for the current session.

3. Type boot and press Enter.

Some examples

setenv ipaddr 10.1.10.100

setenv netmask 255.255.0.0

boot

setenv dhcp yes

saveenv

boot

setenv dhcp no

setenv ipaddr 10.1.10.100

setenv netmask 255.255.0.0

saveenv

boot