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QSW-3200-24T
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Qtech QSW-3200-24T [105/136] Monitor system by snmp

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14.5 Monitor system by SNMP

14.5.1 Brief introduction of SNMP

SNMP (Simple Network Management Protocol) is an important network management protocol

in TCP/IP network. It realizes network management by exchanging information packets. SNMP

protocol provides possibility of concentrated management to large sized network. Its aim is

guaranteeing packet transmission between any two points to be convenient for network

administrator to search information, modify and search fault, finish fault diagnosising, capacity

planning and creation reporting at any network node. It consists of NMS and Agent. NMS(

Network Management Station ),is the working station of client program running,and Agent is

server software running in network devices. NMS can send GetRequest, GetNextRequest and

SetRequest packet to Agent. After receiving requirement packet of NMS,Agent will Read or

Write management variable according to packet type and create Response packet, and return

it to NMS. On the other hand, the Trap packet of abnormity of cold boot or hot boot of devices

will send to NMS.

System supports SNMP version of v1, v2c and v3. v1 provides simple authentication

mechanism which does not support the communication between administrator to administrator

and v1 Trap does not possess authentication mechanism. V2c strengthens management

model (security), manages information structure, protocol operation, the communications

between managers, and it can create and delete table, and strengthen communication

capacity of managers, and reduce the storage operation of agency. V3 realizes user

distinguishing mechanism and packet encryption mechanism, and greatly improves security of

SNMP protocol.

14.5.2 Configuration

SNMP configuration command list:

SNMP configuration command list includes:

 Configure community

 Configure sysContact

 Configure Trap destination host adress

 Configure sysLocation

 Configure sysName

 Configure notify

 Configure engine id

 Configure view

 Configure group

 Configure user

 Configure community

SNMP adopts community authentication. The SNMP packets which are not matching the

authenticated community name will be dropped. SNMP community name is a character string.

Different community can possess the accessing right of read-only or read-write. Community

with the riht of read-only can only query system information, but the one with the right of read-

write can configure system. System can configure at most 8 community names. It is defaulted

to configure without community name. Configure it in global configuratiob mode.

 Configure community name and accessing right. This command can also used to modify

community attribution with character string community-name being the same.

snmp-server community community-name { ro | rw } { deny | permit } [ view view-name ]

Qtech QSW-3200-24T [105/136] Monitor system by snmp

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