Zyxel IES4005 [92/236] Supported mibs

Chapter 11 Management

IES4005M User’s Guide

Figure 40 SNMP Management Model

An SNMP managed network consists of two main components: agents and a manager.

An agent is a management software module that resides in a managed switch (the system). An

agent translates the local management information from the managed switch into a form

compatible with SNMP. The manager is the console through which network administrators perform

network management functions. It executes applications that control and monitor managed

devices.

The managed devices contain object variables/managed objects that define each piece of

information to be collected about a switch. Examples of variables include such as number of packets

received, node port status etc. A Management Information Base (MIB) is a collection of managed

objects. SNMP allows a manager and agents to communicate for the purpose of accessing these

objects.

SNMP itself is a simple request/response protocol based on the manager/agent model. The

manager issues a request and the agent returns responses using the following protocol operations:

Supported MIBs

MIBs let administrators collect statistics and monitor status and performance. The system supports

the following MIBs:

•BRIDGE-MIB.mib

•IF-MIB.mib

Table 63 SNMP Commands

COMMAND DESCRIPTION

Get Allows the manager to retrieve an object variable from the agent.

GetNext Allows the manager to retrieve the next object variable from a table or list within an agent. In

SNMPv1, when a manager 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 manager to set values for object variables within an agent.

Trap Used by the agent to inform the manager of some events.