Operation Manual – SNMP and RMONH3C S7500 Series Ethernet Switches Chapter 1 SNMP Configuration1-1Chapter 1 SNMP ConfigurationWhen configuring SNMP, go to these sections for information you are interested in:z SNMP Overviewz Configuring SNMP Basic Functionsz Configuring Trap Messagez Displaying SNMPz SNMP Configuration Example1.1 SNMP OverviewBy far, the Simple Network Management Protocol (SNMP) has gained the mostextensive application in the computer networks. SNMP has been put into use andwidely accepted as an industry standard in practice. It is used for ensuring thetransmission of the management information between any two nodes in the network. Inthis way, network administrators can easily retrieve and modify the information on anynode in the network. In the meantime, they can locate faults promptly and implementtroubleshooting, capacity planning and report generating.SNMP adopts the polling mechanism and provides the most basic function set. It ismost appropriate for small-sized, fast-speed and low-cost environments. SNMPimplementation only requires the connectionless transport layer protocol UDP;therefore, SNMP is widely supported by many products.1.1.1 SNMP Operation MechanismSNMP can be divided into two parts, namely, network management station (NMS) andagent:An NMS is a workstation running client programs. At present, the commonly used NMplatforms include QuidView, Sun NetManager and IBM NetView.Agent is server software running on network devices.An NMS can send GetRequest, GetNextRequest and SetRequest messages to anagent. Upon receiving a request message from the NMS, the agent will perform Reador Write operation according to the message type, generate and return a Responsemessage to the NMS.An agent will send Trap messages on its own initiative to the NMS to report eventswhen the device status changes or the device encounters any abnormalities such asrestarting the device.
