Introduction
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Notifications, Alarms, and Data Buffering
The ACS administrator can setup logging, notifications, and alarms to alert
administrators about problems. System generated messages on ACS and the
connected servers or devices can be sent to syslog servers for handling. The
administrator can also configure data buffering to store data from
communication on serial ports for monitoring.
Data from communication with serial-connected consoles can be stored:
• Locally in the ACS’s flash memory, or
• Remotely either on an NFS server or a syslog server.
Syslog Servers
Messages about the ACS and connected servers or devices can be sent to a
central logging servers, called syslog servers. Console data from devices
connected to serial ports can be stored in data buffer files on syslog servers.
By default logging and data buffering are not done.
Prerequisites for Logging to Syslog Servers
Before configuring syslogging, the ACS administrator must ensure that syslog
server is pre-configured with a public IP address, and it is accessible from
ACS. The ACS administrator must be able to obtain the following information
from the syslog server’s administrator.
• The IP address of the syslog server
• The facility number for messages coming from the ACS.
Facility numbers are used on the syslog server for handling messages
generated by multiple devices.
Facility Numbers for Syslog Messages
Each syslog server has seven local facility numbers available for its
administrator to assign to different devices or groups of devices at different
locations. The available facility numbers are Local0 through Local7.
An Example of Using Facility Numbers
The syslog system administrator sets up a server called “syslogger” to handle
log messages from two ACS boxes. One ACS is located in São Paulo, Brazil,
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