User's Guide Part 1

Table Of Contents

Chapter 1: Product description System management

Recovery mode

The PTP 700 recovery mode provides a means to recover from serious configuration errors

including lost or forgotten passwords and unknown IP addresses.

Recovery mode also allows new main application software to be loaded even when the

integrity of the existing main application software image has been compromised. The most

likely cause of an integrity problem with the installed main application software is where the

power supply has been interrupted during an earlier software upgrade.

The ODU operates in recovery mode in the following circumstances:

• When a checksum error occurs for the main application software image.

• When a power on, power off, power on cycle is applied to the ODU with the power off

period being around 5sec.

Recovery mode supports a single IPv4 interface, with IP address 169.254.1.1, and with default

link settings. Recovery mode does not support IPv6.

Note

When Recovery has been entered through a power on/off/on cycle, the ODU will revert

to normal operation if no web access has been made to the unit within 30 seconds.

This prevents the unit remaining inadvertently in recovery following a power outage.

Recovery mode options

Options in recovery mode (IPv4 only) are as follows:

• Load new main application software.

• Reset all configuration data. This option resets IP, Ethernet and security configuration

• Reset IP and Ethernet configuration.

• Reset (zeroize) critical security parameters.

• Reboot with existing software and configuration.

If recovery mode has been entered because of a checksum error, after a 30 second wait the

ODU will attempt to reboot with existing software and configuration.

The recovery software image is installed during manufacture of the ODU and cannot be

upgraded by operators.