Reference Guide
Table Of Contents
- Dell EMC OpenManage SNMP Reference Guide Version 10.1.0.0
- Contents
- Introduction
- What is new in this release
- Supported SNMP Versions
- Managed Object Used in This Document
- Server Administrator Instrumentation MIB
- Server Administrator Baseboard Management Controller, ASF MIB
- Server Administrator Storage Management MIB
- Server Administrator Field Replaceable Unit MIB
- Server Administrator Change Management MIB
- Basic Terminology
- Frequently Used Terms in Variable Names
- Tables
- Section Organization
- Other Documents You May Need
- Introduction to the Server Administrator SNMP Subagent
- System Battery Table
- Amperage Probe Table
- Power Unit Group
- Power Supply Table
- Power Usage Table
- Voltage Probe Table
- System Information Group
- Server Administrator Group
- Instrumentation MIB Version Group
- Systems Management Software Group
- System State Group
- Chassis Information Group
- Operating System Group
- System Resource Group
- Power Group
- Thermal Group
- Remote Flash BIOS Group
- Port Group
- Device Group
- Device Tables
- Pointing Device Table
- Keyboard Device Table
- Processor Device Table
- Processor Device Status Table
- Cache Device Table
- Memory Device Table
- Memory Device Mapped Address Table
- Generic Device Table
- PCI Device Table
- PCI Device Configuration Space Table
- Network Device Table
- Managed System Services Device Table
- SD Card Unit Table
- SD Card Device Table
- Device Group Variable Values
- Device Tables
- Slot Group
- Memory Group
- BIOS Setup Control Group
- Local Response Agent Group
- Cost of Ownership Group
- Cluster Group
- Baseboard Management Controller Group
- Field Replaceable Unit Group
- Storage Management Group
- Storage Management Group
- Storage Management Information Group
- Global Data Group
- Physical Devices Group
- Controller Table
- Channel Table
- Enclosure Table
- Array Disk Table
- Array Disk Enclosure Connection Table
- Array Disk Channel Connection Table
- Fan Table
- Fan Connection Table
- Power Supply Table
- Power Supply Connection Table
- Temperature Probe Table
- Temperature Probe Connection Table
- Enclosure Management Module Table
- Enclosure Management Module Connection Table
- Battery Table
- Battery Connection Table
- Tape Drive Table
- NVME adapter table
- Logical Devices Group
- Storage Management Event Group
- Change Management Group
- SNMP Traps
- Storage Management Alert Reference
- Standard Data Type Definitions
- SNMP Sample Output
SNMP Traps
SNMP is frequently used to monitor systems for fault conditions such as temperature violations, hard drive failures.
Management applications can monitor for these conditions by polling the appropriate OIDs with the Get command and analyzing
the returned data. This method has its drawbacks. If it is done frequently, significant amounts of network bandwidth can be
consumed. If it is done infrequently, the response to the fault condition may not occur in a timely fashion. SNMP traps avoid
these limitations of the polling method.
An SNMP trap is an asynchronous event indicating that something significant has occurred. This is analogous to a pager
receiving an important message, except that the SNMP trap frequently contains all the information needed to diagnose a fault.
Two drawbacks to SNMP traps are that they are sent using UDP, which is not a guaranteed delivery mechanism, and that they
are not acknowledged by the receiver.
An SNMP trap message contains the trap’s enterprise OID, the agent IP address, a generic trap ID, the specific trap ID, a time
stamp, and zero or more variable bindings (varbinds). The combination of an enterprise OID and a specific trap ID uniquely
identifies each Server Administrator-defined trap. A varbind consists of an OID and its value and provides additional information
about the trap.
In order for a management system to receive SNMP traps from a managed system, the node must be configured to send traps
to the management system. Trap destination configuration depends on the operating system. When this configuration is done, a
management application on the management system can wait for traps and act on them when received.
NOTE:
For information on Server Administrator Storage Management traps, see in Storage Management Alert Reference,
the Alert Descriptions and Corrective Actions.
NOTE: For the list of storage management alerts and storage management messages, see the Dell OpenManage Server
Administrator Messages Reference Guide available on the Dell Support site at dell.com/openmanagemanuals navigate to
OpenManage Software and select the version required.
Topics:
• Trap Variables
• Understanding The Trap Description
• Understanding Trap Severity
• BMC Traps
Trap Variables
This section describes the variables both on Traditional and Enhanced varbinds that are sent to the management console to
provide additional information about a trap or alert generated by some event on your system. The trap variables presented here
apply to all Instrumentation and RAC traps. Trap variables are sent in the order listed and are reserved for use only in traps.
When a varbind is created for a trap variable, a zero is appended to the object ID (OID) to create the OID for the varbind.
The messages associated with each alertMessage varbind are available in the Message Reference Guide and can be found by
matching the alert ID in the MIB to the event ID in the Message Reference Guide.
Table 1942. Trap Variables
Variable Name
alertSystem
Object ID 1.3.6.1.4.1.674.10892.1.5000.10.1
Description Identifies the system generating the alert.
Syntax DisplayString
Table 1943. Table Index OID
Variable Name
alertTableIndexOID
5
SNMP Traps 429