3com WX3000 Manuel D’Utilisation

 

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The term switch used throughout this document refers to a switching device in a generic sense or 

the switching engine of a WX3000 series. 

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The sample output information in this manual was created on the WX3024. The output information 

on your device may vary. 

 

The simple network management protocol (SNMP) is used for ensuring the transmission of the 

management information between any two network nodes. In this way, network administrators can 

easily retrieve and modify the information about any node on the network. In the meantime, they can 

locate faults promptly and implement the fault diagnosis, capacity planning and report generating. 

As SNMP adopts the polling mechanism and provides basic function set, it is suitable for small-sized 

networks with fast-speed and low-cost. SNMP is based on user datagram protocol (UDP) and is thus 

widely supported by many products. 

SNMP is implemented by two components, namely, network management station (NMS) and agent.  

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An NMS can be a workstation running client program. At present, the commonly used network 

management platforms include QuidView, Sun NetManager, IBM NetView, and so on. 

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Agent is server-side software running on network devices. 

An NMS can send GetRequest, GetNextRequest and SetRequest messages to the agents. Upon 

receiving the requests from the NMS, an agent performs Read or Write operation on the managed 

object (MIB, Management Information Base) according to the message types, generates the 

corresponding Response packets and returns them to the NMS. 

When a network device operates improperly or changes to other state, the agent on it can also send 

trap messages on its own initiative to the NMS to report the events. 

Currently, SNMP agent on the device supports SNMPv3, and is compatible with SNMPv1 and 

SNMPv2c. 

SNMPv3 adopts user name and password authentication. 

SNMPv1 and SNMPv2c adopt community name authentication. The SNMP packets containing invalid 

community names are discarded. SNMP community name is used to define the relationship between