Cannot access NION using IP address or IP address is unknown

There are two main solutions to this problem:

In this section

Using a direct serial connection to assign an IP address

See also

Front panel LED indicators

Including debug messages in the log

Low voltage warning

NION locking up or rebooting spuriously

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:

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:

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:
  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

Scenario

Command to use

The NION is configured with a static IP address, but you want to assign a new address that is temporary.

setenv ipaddr 10.1.10.100
setenv netmask 255.255.0.0
boot

You want to use DHCP for this session and each time the NION boots.

setenv dhcp yes
saveenv
boot

You want to use a static IP address for this session and each time the NION boots.

setenv dhcp no
setenv ipaddr 10.1.10.100
setenv netmask 255.255.0.0
saveenv
boot