Technical data

Configuring the syslog Facility
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Understanding How syslog Filters Messages
The syslog facility forwards router event messages to a remote host only if there is
an entity filter for that host. An entity filter is a set of criteria that you specify to
tell syslog whether to forward an event message. Entities include Bay Networks
software that provides a service, such as TFTP, IP, or the GAME operating
system.
Refer to Event Messages for Routers for a complete list of entities for which you
can create filters.
You can define many entity filters for a remote host, and you can define different
criteria for each entity. For example, you might define two different APPN filters
for the same host.
The entity filter can filter messages based on the following criteria:
• The event number or range of numbers
For example, you might want syslog to forward only the event messages with
event numbers 5 through 50.
• The severity level (warning, fault, trace, information, or debug)
• The slot or range of slots on which the event occurred
For example, you might want only the event messages that occur on slot 4, or
on slots 2 through 4.
Note: You can filter events by either event number or event severity level, but
not by both.