ZyXEL Communications 2602HWL-D3A manual ∙ GetNext, ∙ Set, ∙ Trap

Prestige 2602HWL-D3A Support Notes

2. SNMPv1 Operations

SNMP itself is a simple request/response protocol. 4 SNMPv1 operations are defined as below.

∙Get

Allows the NMS to retrieve an object variable from the agent.

∙GetNext

Allows the NMS to retrieve the next object variable from a table or list within an agent. In SNMPv1, when a NMS wants to retrieve all elements of a table from an agent, it initiates a Get operation, followed by a series of GetNext operations.

∙Set

Allows the NMS to set values for object variables within an agent.

∙Trap

Used by the agent to inform the NMS of some events.

The SNMPv1 messages contains two part. The first part contains a version and a community name. The second part contains the actual SNMP protocol data unit (PDU) specifying the operation to be performed (Get, Set, and

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