Tp-Link T2600G-28MPS (TL-SG3424P) — обзор SNMP: Протокол управления сетями и его элементы [328/379]

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Chapter 15 SNMP

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SNMP Overview

SNMP (Simple Network Management Protocol) has gained the most extensive application on

the UDP/IP networks. SNMP provides a management frame to monitor and maintain the

network devices. It is used for automatically managing the various network devices no matter

the physical differences of the devices. Currently, the most network management systems are

based on SNMP.

SNMP is simply designed and convenient for use with no need of complex fulfillment

procedures and too much network resources. With SNMP function enabled, network

administrators can easily monitor the network performance, detect the malfunctions and

configure the network devices. In the meantime, they can locate faults promptly and implement

the fault diagnosis, capacity planning and report generating.



SNMP Management Frame

SNMP management frame includes three network elements: SNMP Management Station,

SNMP Agent and MIB (Management Information Base).

SNMP Management Station: SNMP Management Station is the workstation for running the

SNMP client program, providing a friendly management interface for the administrator to

manage the most network devices conveniently.

SNMP Agent: Agent is the server software operated on network devices with the responsibility

of receiving and processing the request packets from SNMP Management Station. In the

meanwhile, Agent will inform the SNMP Management Station of the events whenever the

device status changes or the device encounters any abnormalities such as device reboot.

MIB: MIB is the set of the managed objects. MIB defines a few attributes of the managed

objects, including the names, the access rights, and the data types. Every SNMP Agent has its

own MIB. The SNMP Management station can read/write the MIB objects based on its

management right.

SNMP Management Station is the manager of SNMP network while SNMP Agent is the

managed object. The information between SNMP Management Station and SNMP Agent are

exchanged through SNMP (Simple Network Management Protocol). The relationship among

SNMP Management Station, SNMP Agent and MIB is illustrated in the following figure.

Figure 15-1 Relationship among SNMP Network Elements

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