1.2.1 SNMP request processing
An SNMP request is a request from the manager to access MIB values that are managed by SNMP Agent. The following figure shows an overview of SNMP request processing.
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![[Figure]](GRAPHICS/ZU010110.GIF)
There are three types of SNMP requests: SNMP GET (acquisition) requests, SNMP SET (setting) requests, and SNMP GET NEXT (acquisition) requests. When SNMP Agent receives an SNMP request, it parses the received SNMP request and acquires and sets values. After that, SNMP Agent creates a response message containing the processing result and sends it to the manager.
For SNMP request processing, SNMP Agent supports SNMPv1 and SNMPv2c. SNMP Agent can communicate using either IPv4 or IPv6.
The following describes the MIB objects that can be acquired and set by SNMP Agent.
- Organization of this subsection
(1) MIB objects managed by SNMP Agent
SNMP Agent implements not only standard MIB objects, but also Hewlett-Packard enterprise-specific MIB objects and Hitachi enterprise-specific MIB objects. For details about the MIB objects implemented by SNMP Agent, see 4. MIB Objects.
(2) MIB objects provided by native agents
A native agent is a standard agent that is provided by the system vendor.
On HP-UX (IPF), SNMP Agent's master agent communicates directly with the native agent to acquire the MIB objects provided by the native agent.
On an OS other than HP-UX (IPF), you can use SNMP Agent's native agent adapter function to acquire the MIB objects provided by the native agent. For details about the native agent adapter function and settings, see 2.9 Setting up the native agent adapter (for Solaris, AIX, and Linux).