Chapter 9 Snmp; About Snmp; Figure 9-1 Snmp Management Model - ZyXEL Communications VES-1000 Series User Manual

VES-1000 Series Ethernet Switch
Chapter 9
SNMP
This chapter discusses SNMP (Simple Network Management Protocol) for network management and
monitoring.

9.1 About 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
VES-1416 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 9-1 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 VES-1012). 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 9-1