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Using the syslog Facility

B-3

Understanding How

syslog

Filters Messages

The syslog facility forwards router event messages to a remote host only when at

least one entity ﬁlter exists for that host. Entities include Bay Networks software

that provides a service, such as TFTP, IP, or the GAME operating system. An

entity ﬁlter is a set of criteria that you specify to tell syslog whether to forward an

event message. (Refer to Event Messages for Routers and BNX Platforms 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 several

different sets of criteria for each entity. For example, you might deﬁne two

different APPN ﬁlters for the same host.

The criteria that deﬁne the entity ﬁlter can consist of the following:

• 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, informational, 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 slots 2 through 4.

Conﬁguring the

syslog

Facility

The steps you must take to conﬁgure the syslog facility are as follows:

1. Conﬁgure the syslog group parameters.

The group parameters let you

— Enable or disable syslog on the router.

— Specify the number of remote hosts you want to conﬁgure for syslog.

— Set the polling cycle.

2. Add at least one remote host for which you want the syslog facility to

ﬁlter and forward router event messages.

3. Select a host and add at least one entity ﬁlter for that host.

Note: The event number and severity level are mutually exclusive.

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Avaya Managing Routers and BNX Platforms Manual de usuario Pagina 217