APPN Network Management Using the Simple Network Management Protocol
Introduction to SNMPIntroduction to SNMP
The Simple Network Management Protocol (SNMP) is an
An SNMP agent is a process that runs on a system being managed and maintains the MIB database for the system. An SNMP manager is an application that generates requests for MIB information and processes the responses. The manager and agent communicate using the Simple Network Management Protocol.
SNMP agents (like the SNMPD daemon) typically have predefined MIB objects that they can access. An SNMP subagent is used to extend the number and type of MIB objects that an SNMP agent can support.
An SNMP manager can issue requests to an agent either to retrieve information from the agent's MIB (an SNMP Get request), or to change information in the agent's MIB (an SNMP Set request). An SNMP agent can also send unsolicited messages to the SNMP manager (SNMP traps).
The interaction between SNMP components in a system is shown in Figure
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