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Chapter 20 Mgmt Config and System Restart Menu

MES-2110 User’s Guide

146

20.3 The SNMP Configuration Screens

Simple Network Management Protocol (SNMP) is an application layer protocol

used to manage and monitor TCP/IP-based devices. SNMP is used to exchange

management information between the network management system (NMS) and a

network element (NE). A manager station can manage and monitor the Switch

through the network via SNMP version one (SNMPv1), SNMP version 2c or SNMP

version 3. The next figure illustrates an SNMP management operation. SNMP is

only available if TCP/IP is configured.

Figure 79 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

Switch). 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

number of packets received, node port status and so on. 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.

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ZyXEL Communications MES-2110 Guia do Utilizador Página 146