SNMP Manager Programmer's Guide

SNMP Manager Programmer’s Guide–134249
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Introduction to Manager Services
Simple Network Management Protocol (SNMP) is an Internet standard that facilitates
managing resources on networks interconnecting devices manufactured by different
vendors.
The application used to manage network resources is known as a manager. A manager
monitors and controls resources on the network by sending messages to applications
known as agents, which have access to resources manageable using SNMP. Managers
and agents can run on devices provided by different vendors, yet still exchange resource
management information, because they both implement the SNMP protocol for
describing resource information and for constructing and interpreting messages that
carry the information.
Manager Services lets you create SNMP managers that run as Tandem NonStop Kernel
processes, in either Guardian or Open System Services (OSS) environments. Like any
SNMP manager, a manager created using Manager Services can interact with agents
running on any network device, using any transport protocol by which the agents can be
addressed.
This section examines some of the key aspects of SNMP resource management, both in
general and within the context of NonStop Kernel environments. Then it takes a brief
look at the components and use of Manager Services.
SNMP Resource Management
As Figure 1-1 indicates, SNMP managers initiate requests for resource information, and
SNMP agents respond to those requests, interacting with subagents that communicate
with the agent if the resources are the responsibility of subagents.
Figure 1-1. Components of SNMP Resource Management
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Manager
Agent
Subagents
MIBs
System Resources
MIBs
Traps
Requests
Responses
Traps
Requests
Responses
MIBs