
SNMP, RMON, BootP, DHCP, and RARP Concepts
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An event log message provides a brief description of an event, along with the
event code associated with that event.
A trap is an event that the router transmits to the network management station.
SNMP allows you to configure which event log messages the agent sends to the
network management station as traps. You select these traps based on slot,
protocol entity, and severity level. You can also specify up to 50 exceptions, which
are traps that the agent always sends, or never sends, regardless of slot and
regardless of how you configure the trap parameters. See “Confi
guring Traps on
the Router” on page 3-19 for information about how to specify which traps the
agent sends.
Protocol Entities
Events are always associated with a particular protocol entity. An entity is the
software that generates a message. Entities include Bay Networks software
dedicated to the operation of a software service, such as
Trivial File Transfer
Protocol (TFTP) and IP, and the GAME
®
operating system.
Both events and entities are assigned entity codes. Together, this pair uniquely
identifies a Bay Networks router platform event. See Event Messages for Routers
for a complete list of entities (both their abbreviations and full names) and
associated entity codes.
Severity Levels
Event and trap messages are always associated with one of five severity levels.
T
able 2-1 describes the severity levels and gives the code that corresponds to each
one. This guide does not cover Debug messages, because they are for Bay
Networks internal use only.
Table 2-1. Severity Levels
Severity Description Code
Information Indicates routine events that usually require no action. 2
Warning Indicates that a service acted in an unexpected manner. 4
Fault Indicates a major service disruption, usually caused by a
configuration, network, or hardware problem. The entities
involved keep restarting until the problem is resolved.
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(continued)
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