Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) - Managed Switches User Guide - Manual (Page 42)

CHAPTER 4 • WEB-BASED MANAGEMENT 41
changed by the user.
Note
SNMP, the Web interface, Telnet and the serial terminal all use the same password,
which can be changed by the user.
Another benefit is the option of sending traps using the Simple Network Management Pro-
tocol.
˽ Management Information Base (MIB) – Database, which contains all the data (objects
and variables) required for network management.
˽ Agent – An agent is a software tool that collects data from the network device on which
it is installed, and it then transmits this data on request. Agents reside in all managed
network components and transmit the values of specific settings and parameters to the
management station. On a request from a manager or on a specific event, the agent
transmits the collected information to the management station.
˽ Traps – Traps are spontaneous SNMP alarm or information messages, which are sent
by an SNMP-compatible device when specific events occur. Traps are transmitted with
maximum priority to various addresses (if required) and can then be displayed by the
management station in plain text. The IP addresses that are to receive these traps (trap
targets/receivers) must be set by the user on the relevant device. The following traps
are used:
trapColdStart (1.3.6.1.6.3.1.1.5.1) – Sent when the switch is started.
trapPortUp/Down (1.3.6.1.6.3.1.5.3/4) – Sent when a port is switched on or off.
Diagram of SNMP Management
The figure below shows a diagram of SNMP management (see Figure 4.23).