System logging is a method of collecting system messages from system events. The Branch Gateway includes a logging package that collects system messages in several output types. Each of these types is called a sink. When the system generates a logging message, the message can be sent to each sink you enable.

System messages do not always indicate errors. Some messages are informational, while others may help to diagnose problems with communications lines, internal hardware, and system software. The logging facility logs configuration commands entered through the CLI or SNMP, system traps, and informative messages concerning the functioning of various processes.