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11-6
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 11 SNMP
SNMP Traps
A managed object (sometimes called a MIB object) is one of any specific characteristics of a managed
device. Managed objects consist of one or more object instances (variables). Table 11-2 lists the IETF
standard MIBs implemented in the ONS 15454 SDH SNMP Agent.
The ONS 15454 SDH MIBs are included on the software CD that ships with the ONS 15454 SDH.
Compile these MIBs in the following order. If you do not follow the order, one or more MIB files might
not compile.
1. CERENT-GLOBAL-REGISTRY.mib
2. CERENT-TC.mib
3. CERENT-454.mib
4. CERENT-GENERIC.mib
If you cannot compile the ONS 15454 SDH MIBs, call the Technical Assistance Center (TAC). To obtain
a directory of toll-free Cisco TAC telephone numbers for your country, refer to the Cisco ONS 15454
SDH Product Overview preference section.
11.5 SNMP Traps
The ONS 15454 SDH can receive SNMP requests from a number of SNMP managers and send traps to
eleven trap receivers. The ONS 15454 SDH generates all alarms and events as SNMP traps.
The ONS 15454 SDH generates traps containing an object ID that uniquely identifies the alarm. An
entity identifier uniquely identifies the entity that generated the alarm (slot, port, STS, VT, BLSR, STP,
etc.). The traps give the severity of the alarm (critical, major, minor, event, etc.) and indicate whether the
alarm is service affecting or non-service affecting. The traps also contain a date/time stamp that shows
the date and time the alarm occurred. The ONS 15454 SDH also generates a trap for each alarm when
the alarm condition clears.
Each SNMP trap contains eleven variable bindings listed in Table 11-3for the ONS 15454 SDH.
Table 11-2 IETF Standard MIBs Implemented in the ONS 15454 SDH SNMP Agent
RFC# Module Name Title/Comments
1213
+1907
RFC1213-MIB,
SNMPV2-MIB
MIB-II from RFC1213 with enhancement from RFC1907
for v2
1493 BRIDGE-MIB Bridge/Spanning Tree (SNMPv1 MIB)
1757 RMON-MIB Remote monitoring (RMON) Ethernet
2737 ENTITY-MIB Entity MIB using SMI v2 (version II)
2233 IF-MIB Interface evolution (enhances MIB-II)
2358 Etherlike-MIB Ethernet-like interface (SNMPv2 MIB)
2495 DS1-MIB DS-1/E1
2496 DS3-MIB DS-3/E3
2558 SONET-MIB SONET
2674 P-BRIDGE-MIB,
Q-BRIDGE-MIB
P-Bridge and Q-Bridge MIB
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