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Entering and Exiting the ELS Configuration Environment
The ELS configuration environment (available from the CONFIG process) is
characterized by the ELS Config> prompt. Commands entered at this prompt create
the ELS default state that takes effect after you restart the router. These commands
are described in greater detail later in this chapter.
Configuration commands that have subsystem, group, or event as a parameter are
executed in the following order:
v Subsystem
v Group
v Event
To set a basic ELS configuration, enter the display subsystem all standard
command at the ELS Config> prompt. This command configures the ELS to display
messages from all subsystems with the STANDARD logging level (that is, all errors
and unusual informational comments).
Note: The router does not have a default ELS configuration. You must enter the
ELS configuration environment and set the default state.
To enter the ELS configuration environment from OPCON:
1. Enter the talk 6 command. The console displays the CONFIG prompt (Config>).
If the prompt does not appear when you first enter CONFIG, press Return.
2. At the CONFIG prompt, enter the following command to access ELS:
Config> eve
The console displays the ELS configuration prompt (ELS config>). Now, you can
enter ELS configuration commands.
To leave the ELS configuration environment, enter the exit command.
Event Logging Concepts
This section describes how events are logged and how to interpret messages. Also
described are the concepts of subsystem, event number, and logging level. A large
part of ELS function is based on commands that accept the subsystem, event
number, and logging level as parameters.
Causes of Events
Events occur continuously while the router is operating. They can be caused by any
of the following reasons:
v System activity
v Status changes
v Service requests
v Data transmission and reception
v Data and internal errors
When an event occurs, ELS receives data from the system that identifies the
source and nature of the event. Then ELS generates a message that uses the data
received as part of the message.
Using ELS
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MRS V3.2 Software User’s Guide