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Chapter 16
SNMP
16.7 SNMP Trap Content
The ONS 15454 uses SNMP traps to generate all alarms and events, such as raises and clears. The traps
contain the following information:
•
•
•
16.7.1 Generic and IETF Traps
The ONS 15454 supports the generic IETF traps listed in
Table 16-7
Trap
coldStart
warmStart
authenticationFailure
newRoot
topologyChange
entConfigChange
dsx1LineStatusChange
dsx3LineStatusChange
risingAlarm
fallingAlarm
78-18106-01
Object IDs that uniquely identify each event with information about the generating entity (the slot
or port; synchronous transport signal [STS] and Virtual Tributary [VT]; bidirectional line switched
ring [BLSR], Spanning Tree Protocol [STP], etc.).
Severity and service effect of the alarm (critical, major, minor, or event; service-affecting or
non-service-affecting).
Date and time stamp showing when the alarm occurred.
Supported Generic IETF Traps
From RFC No.
MIB
RFC1907-MIB Agent up, cold start.
RFC1907-MIB Agent up, warm start.
RFC1907-MIB Community string does not match.
RFC1493/
BRIDGE-MIB
RFC1493/
BRIDGE-MIB
RFC2737/
ENTITY-MIB
RFC2495/
DS1-MIB
RFC2496/
DS3-MIB
RFC2819/
RMON-MIB
RFC2819/
RMON-MIB
Table
16-7.
Description
Sending agent is the new root of the spanning tree.
A port in a bridge has changed from Learning to
Forwarding or Forwarding to Blocking.
The entLastChangeTime value has changed.
The value of an instance of dsx1LineStatus has changed.
The trap can be used by an NMS to trigger polls. When
the line status change results from a higher-level line
status change (for example, a DS-3), no traps for the
DS-1 are sent.
The value of an instance of dsx3LineStatus has changed.
This trap can be used by an NMS to trigger polls. When
the line status change results in a lower-level line status
change (for example, a DS-1), no traps for the
lower-level are sent.
The SNMP trap that is generated when an alarm entry
crosses the rising threshold and the entry generates an
event that is configured for sending SNMP traps.
The SNMP trap that is generated when an alarm entry
crosses the falling threshold and the entry generates an
event that is configured for sending SNMP traps.
Cisco ONS 15454 Reference Manual, R8.5
16.7 SNMP Trap Content
16-9
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