SNMP is a protocol for managing management-target objects (such as routers, printers, and databases) on a network. By using SNMP, HiRDB operating information (performance information) can be collected at regular intervals using an SNMP agent and MIB. The collected operating information is sent to a Management Framework where it is managed. This is called the facility for monitoring MIB performance information.

The Management Framework provides a facility for converting the collected operating information into graphs, enabling the HiRDB operating information to be evaluated over a period of time. You can also set events, such as issuance of a warning when the value of an operating information item that is being monitored exceeds a specified value. In this way, changes in HiRDB's operating status can be monitored and the network administrator can take appropriate action before an incipient change results in an error.

MIB records the HiRDB operating information provided by HiRDB. MIB also prescribes the method of collecting the HiRDB operating information and executes HiRDB commands, such as pdbufls, or utilities in response to requests from the Management Framework for the purpose of collecting the HiRDB operating information.

Reference note

A Management Framework performs management of the collected HiRDB operating information, user notification, and creation of documentation for investigating operating problems.

The following figure provides an overview of the facility for monitoring MIB performance information.

Figure 27-1 Overview of the facility for monitoring MIB performance information

Explanation

JP1/ESA, which is an SNMP agent, uses MIB commands to collect HiRDB operating information at specified intervals. This operating information is managed by the Management Framework.

MIB:

Variables that represent information that can be accessed using SNMP are described in a text file coded in ASN.1.

MIB commands:

Commands used to collect HiRDB operating information. These commands are executed by JP1/ESA on HiRDB. A HiRDB command or utility is executed as an extension of an MIB command and returns its execution results to JP1/ESA.

SNMP:

A protocol for monitoring and controlling management-target objects (such as routers, printers, and databases) on a network via the network.

SNMP agent:

A program that transfers HiRDB operating information to the Management Framework or that collects HiRDB operating information in response to requests from the Management Framework. The following product is used as the SNMP agent:

• JP1/Cm2/Extensible SNMP Agent

Management Framework:

An SNMP-compatible management program. We recommend that you use the following as the Management Framework:

• JP1/Cm2/Network Node Manager, JP1/Performance Management/SNMP System Observer, and JP1/Performance Management/SNMP System Observer for Database Server
• Management Frameworks of other companies
  

  Reference note

  In addition to the method that uses MIB, JP1/PFM-Agent for HiRDB can also be used to monitor performance information. You must select either the facility for monitoring MIB performance information or JP1/PFM-Agent for HiRDB, whichever is appropriate for your system environment.