ZyXEL Communications MSC1000G Series, User Manual

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Management Switch Card User’s Guide
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H A P T E R
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Sys Screens
This chapter describes the Sys screens you use to configure general system, access control, syslog,
administrator login accounts and management IP settings.
14.1 SNMP
Simple Network Management Protocol is a protocol used for exchanging management information
between network switches. SNMP is a member of TCP/IP protocol suite. A manager station can
manage and monitor the system through the network via SNMP version one (SNMPv1) and/or
SNMP version 2c. The next figure illustrates an SNMP management operation. SNMP is only
available if TCP/IP is configured.
Figure 386
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.