Product Overview
An SNMP object manager is a system software component that initiates and manages system resources, such as interfaces to the various objects it manages, and communicates with the Simple Network Management Protocol (SNMP) Agent. The SNMP Agent communicates with the object manager through an agent application programming interface (API).
The managed objects represent system resources. The objects are defined in a Management Information Base (MIB).
A user accesses the MIB from a management station. Object managers enable anyone at an SNMP management station such as System Management Center, to access configuration and performance information about the enterprise server components. The SNMP Agent is the interface between the object manager and the management station.
The following object managers are included as part of the operating environment:
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Host Resources
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Core Network Services
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TCP/IP Network Provider
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MCP Resource
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System Assistant
The following figure shows how the SNMP object managers exist in an enterprise server environment.
General Features
Core Network Services (CNS) Object Manager
The CNS Object Manager is an extension of the SNMP Agent and is responsible for managing the MIB-II interface group and link layer protocols (such as LAN and FDDI) of the enterprise server and portions of the enterprise-specific Management Information Base (MIB).
Host Resources Object Manager
The Host Resources Object Manager retrieves configuration and performance information about enterprise servers that is displayed in an SMTP management station. The information that an SNMP management station can access is described in the Host Resources MIB.
MCP Resource Object Manager
The MCP Resource Object Manager retrieves configuration and performance information about MCP Environment components such as processors, memory, and disk families. It also enables you to set threshold values for variables in the MIB.
By using the MCP Resource Object Manager, you can
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Monitor MCP processor and memory usage.
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Monitor MCP disk family configuration and usage.
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Set warning thresholds for various MCP resource performance MIB variables.
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Set critical thresholds for various MCP resource performance MIB variables.
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Receive SNMP traps when thresholds are exceeded.
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Access information about the objects being monitored.
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Obtain a summary status of all the groups of objects being monitored.
MCP Resource Object Manager Transaction Server Tank File Management
The Transaction Server tank file can fill quickly without you being aware of a problem. This feature enables you to perform policy-based management of Transaction Server tank usage by setting warning and critical thresholds. When one of these thresholds is traversed, the MCP Resource Object Manager issues a Transaction Server Monitor Threshold trap containing the cmGeneralStatusTankFileUsed object ID (OID) and the new status value.
You can inquire on
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Threshold settings
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The tank family name (as defined by the Transaction Server utility)
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Tank usage percentage
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The current status (OK, WARNING, CRITICAL) as determined by the threshold settings.
A threshold setting of zero indicates that the threshold level is not monitored.
System Assistant Object Manager
The System Assistant Object Manager generates traps that warn the user that error conditions or violations have occurred.
The System Assistant Object Manager receives data from the System Assistant whenever the System Assistant detects certain types of events, such as system errors or violations. System Assistant sends the data related to this event, with a request to generate a trap, to the System Assistant Object Manager. The System Assistant Object Manager generates the trap and sends it to the SNMP agent, which sends it to the SNMP manager.
Traps are generated and sent whenever the System Assistant Object Manager receives notification of the following types of events:
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Mainframe error
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Hardware error
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Program dump
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Process abort
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I/O error
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Security violation
TCP/IP Network Provider Object Manager
The TCP/IP Network Provider Object Manager is an extension of the SNMP Agent software and is responsible for managing the MIB-II TCP/IP/UDP groups. This functionality is incorporated into the TCP/IP network on the enterprise server.
Implementation of Nonsave Inuse Memory Objects
Nonsave in-use Memory Objects have been added to the Unisys-SMI MIB and the MCP Resource Object Manager to replace Overlay objects, which have been de-implemented.
New Features/Enhancements
SNMP Object Managers now supports Simple Network Management Protocol version 2.0 and 3.0.
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Version 2.0 provides supports features like GetBulk, Counter64 and enhanced error logging.
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Version 3.0 improves interoperability with systems management tools and increases security by encrypting network communications.
Ordering Information
SNMP Object Managers is included as part of the operating environment. Source code is not available for this product.
Product Information
Refer to the following documents for more information:
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SNMP Agent Implementation and Operations Guide (3787 7719)
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SNMP Object Managers for ClearPath MCP Implementation Guide (3789 7246)
