16-9
Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Chapter 16 SNMP
16.7 SNMP Trap Content
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:
• 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.

16.7.1 Generic and IETF Traps

The ONS 15454 supports the generic IETF traps listed in Table 16-7.
Table 16-7 Supported Generic IETF Traps
Trap
From RFC No.
MIB Description
coldStart RFC1907-MIB Agent up, cold start.
warmStart RFC1907-MIB Agent up, warm start.
authenticationFailure RFC1907-MIB Community string does not match.
newRoot RFC1493/
BRIDGE-MIB
Sending agent is the new root of the spanning tree.
topologyChange RFC1493/
BRIDGE-MIB
A port in a bridge has changed from Learning to
Forwarding or Forwarding to Blocking.
entConfigChange RFC2737/
ENTITY-MIB
The entLastChangeTime value has changed.
dsx1LineStatusChange RFC2495/
DS1-MIB
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.
dsx3LineStatusChange RFC2496/
DS3-MIB
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.
risingAlarm RFC2819/
RMON-MIB
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.
fallingAlarm RFC2819/
RMON-MIB
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.