Introduction > Notifications, Alarms, and Data Buffering > Syslog Servers > Prerequisites for Logging to Syslog Servers

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.
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, and the other in Fremont, California. The syslog server’s administrator wants to aggregate messages from the São Paulo ACS into the local1 facility, and to aggregate messages from Fremont ACS into the local2 facility.
On “syslogger” the system administrator has configured the system logging utility to write messages from the local1 facility to the /var/log/saopaulo-config file and the messages from the local2 facility to the /var/log/fremont-config file. If you were in Fremont and identifying the syslog server using the Web Manager, according to this example, you would select the facility number Local2 from the “Facility Number” pull-down menu on the Syslog form.

Introduction > Notifications, Alarms, and Data Buffering > Syslog Servers > Prerequisites for Logging to Syslog Servers