Viewing Event Logs Using The Cli; Configuring And Viewing Crash Logs; Chapter - Cisco ASR 5000 Administration Manual

System Logs
Field
Active buffer
Inactive buffer

Viewing Event Logs Using the CLI

Event logs generated by the system can be viewed in one of the following ways:
• From the syslog server: If the system is configured to send logs to a syslog server, the logs can be
• From the system CLI: Logs stored in the system memory buffers can be viewed directly from the CLI.
• From the console port: By default, the system automatically displays events over the console interface
This section provides instructions for viewing event logs using the CLI. These instructions assume that you
are at the root prompt for the Exec mode.
Step 1
Copy the active log memory buffer to the inactive log memory buffer.
When the active log memory buffer is copied to the inactive log memory buffer existing information in the inactive log
memory buffer is deleted.
Both active and inactive event log memory buffers can be viewed using the CLI in Exec mode. However, it is preferable
to view the inactive log in order to prevent any data from being over-written. The information from the active log buffer
can be copied to the inactive log buffer by entering the following command:
host_name
[local]
Step 2 View the logs by entering the following command:
host_name
[local]
A number of optional keywords/variables are available for the show logs command. Refer to the Exec Mode Show
Commands chapter in the Command Line Interface Reference for more information.

Configuring and Viewing Crash Logs

In the unlikely even of a software crash, the system stores information that could be useful in determining the
reason for the crash. This information can be maintained in system memory or it can be transferred and stored
on a network server.
The system supports the generation of the following two types of logs:
viewed directly on the syslog server.
to a terminal provided that there is no CLI session active.
logs checkpoint
#
show logs
#
Description
Displays the number of events currently logged in the active memory
buffer as well as a date/time timestamp for the oldest and most recent
entries in the buffer.
Displays the number of events currently logged in the inactive memory
buffer.
ASR 5000 System Administration Guide, StarOS Release 21.1
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