Zyxel OLT2412 [51/326] Dual image files

Chapter 4 CLI Introduction

OLT2412 User’s Guide

• Optional fields are in square brackets []; for instance msc update-target [standby|all], the

standby or all field is optional.

The following is an example of required input within an optional field: snmp-server [contact

<system-contact>][location <system-location>], the contact and location fields are

optional. However, if you use contact, then you must provide the system contact information

and if you use location, then you must provide the system location information.

•The | (bar) symbol means “or”.

• italic terms represent user-defined input values; for example, in snmp-server [contact

<system contact>], system contact can be replaced by the administrator’s name.

• A key stroke is denoted by square brackets and uppercase text, for example, [ENTER] means the

“Enter” or “Return” key on your keyboard.

• <cr> means press the [ENTER] key.

• An arrow (-->) indicates that this line is a continuation of the previous line.

• A dashed line (------------------------------------------------------------------) indicates omission of

contents for brevity.

4.6 Dual Image Files

The management card supports dual firmware images. By default, the management card uses

firmware ras-0 while the second firmware file is named ras-1. This allows immediate rollback on

system boot up in case of a corrupt firmware image.

Use the show version [flash] command to display the version of the running firmware on the

active management card. Optionally, display the version of the currently installed firmware on the

flash memory.

Use the show msc command to display the versions of the running firmware on the active and

standby management cards.

Use boot image <1|2> to have the (active) management card update (1) the ras-0 image or (2)

the ras-1 image when you upload firmware.

See Chapter 40 on page 281 for more on management card redundancy status and control

commands.

4.7 Dual Configuration Files

The management card has a start-up configuration file and a passive configuration file. The running

configuration is based on the start-up configuration file. These two configuration files are different

from the “default” configuration (the system’s built-in configuration included with the firmware).

The management card starts with the default configuration and customizes it with the start-up

configuration file’s settings to build the running configuration.

The OLT synchronizes the running configuration on the standby management card with the running

configuration on the active management card at start up and when you use the

write memory

command.