Syslog is a standard for message logging. Syslog allows the separation of software that generates messages for logging, the system that stores the messages, and the software that generates reports. In the Metasys system, the servers and network engines provide the optional capability of sending its configured audit log entries and event notifications to an external, customer-provided Syslog server. A Syslog UPD packet contains three fields: PRI, Header, and Message. The Metasys system implementation of Syslog conforms to published internet document Request for Comments (RFC) 3164.