Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Manual do Utilizador descarregar pdf (Página 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 benet 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 soware 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 specic settings and parameters to the

management station. On a request from a manager or on a specic 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 specic 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. e IP addresses that are to receive these traps (trap

targets/receivers) must be set by the user on the relevant device. e 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 o.

Diagram of SNMP Management

e gure below shows a diagram of SNMP management (see Figure 4.23).

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Wavetronix Click 342 (lean managed ethernet switch) (CLK-342) Manual do Utilizador Página 42