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Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 18 SNMP
18.2 Basic SNMP Components
18.2 Basic SNMP Components
In general terms, an SNMP-managed network consists of a management system, agents, and managed
devices.
A management system such as HP OpenView executes monitoring applications and controls managed
devices. Management systems execute most of the management processes and provide the bulk of
memory resources used for network management. A network might be managed by one or several
management systems. Figure 18-2 illustrates the relationship between the network manager, the SNMP
agent, and the managed devices.
Figure 18-2 Example of the Primary SNMP Components
An agent (such as SNMP) residing on each managed device translates local management information
data—such as performance information or event and error information—caught in software traps, into a
readable form for the management system. Figure 18-3 illustrates SNMP agent get-requests that
transport data to the network management software.
Management
Entity
Agent
Management
Database
Agent
NMS
Management
Database
Managed Devices
Agent
Management
Database
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