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Table 5-2 Supported Notification Messages
Object ID Description
1.3.6.1.2.1.17.0.1 The newRoot trap indicates that the sending
agent has become the new root of the Spanning
Tree; the trap is sent by a bridge soon after its
election as the new root, e.g., upon expiration of
the Topology Change Timer immediately
subsequent to its election.
1.3.6.1.2.1.17.0.2 A topologyChange trap is sent by a bridge when
any of its configured ports transitions from the
Learning state to the Forwarding state, or from
the Forwarding state to the Discarding state. The
trap is not sent if a newRoot trap is sent for the
same transition.
1.3.6.1.6.3.1.1.5.1 A coldStart trap signifies that the SNMPv2 entity,
acting in an agent role, is reinitializing itself and
that its configuration may have been altered.
1.3.6.1.6.3.1.1.5.2 A warmStart trap signifies that the SNMPv2
entity, acting in an agent role, is reinitializing
itself such that its configuration is unaltered.
1.3.6.1.6.3.1.1.5.3 A linkDown trap signifies that the SNMP entity,
acting in an agent role, has detected that the
ifOperStatus object for one of its communication
links is about to enter the down state from some
other state (but not from the notPresent state).
This other state is indicated by the included
value of ifOperStatus.
1.3.6.1.6.3.1.1.5.4 A linkUp trap signifies that the SNMP entity,
acting in an agent role, has detected that the
ifOperStatus object for one of its communication
links left the down state and transitioned into
some other state (but not into the notPresent
state). This other state is indicated by the
included value of ifOperStatus.
1.3.6.1.6.3.1.1.5.5 An authenticationFailure trap signifies that the
SNMPv2 entity, acting in an agent role, has
received a protocol message that is not properly
authenticated. While all implementations of the
SNMPv2 must be capable of generating this
trap, the snmpEnableAuthenTraps object
indicates whether this trap will be generated.
1.3.6.1.2.1.16.0.1 The SNMP trap that is generated when an alarm
entry crosses its rising threshold and generates
an event that is configured for sending SNMP
traps.
1.3.6.1.2.1.16.0.2 The SNMP trap that is generated when an alarm
entry crosses its falling threshold and generates
an event that is configured for sending SNMP
traps.
Object Label
RFC 1493 Traps
newRoot
topologyChange
SNMPv2 Traps
coldStart
warmStart
linkDown
*
linkUp
*
authenticationFailure
*
RMON Events (V2)
risingAlarm
fallingAlarm
5-14
Simple Network Management Protocol
5