ZyXEL GS-1548 User Manual download pdf (Page 105)

GS-1524/GS-1548 User’s Guide

105

CHAPTER 18

SNMP

This chapter describes how to user Simple Network Management Protocol (SNMP) to manage

and monitor the Switch.

18.1 About SNMP

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 59 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 network device (the

Switch). An agent translates the local management information from the managed device 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 the device. 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 GS-1548 User Manual Page 105