Справочник Пользователя для RAD Data comm IPmux-11

 

IPmux-11 Ver. 2.00 

SNMP Environment 

C-1 

This appendix provides specific information for IPmux-11 management by SNMP 
(Simple Network Management Protocol). 
The SNMP management functions of IPmux-11 are provided by an internal SNMP 
agent. The SNMP management communication uses UDP  (User Datagram 
Protocol), which is a connectionless-mode transport protocol, part of the IP 
(Internet Protocol) protocol suite.  
This appendix covers the information related to the SNMP environment.  

The SNMP is an asynchronous command-response polling protocol. All 
management traffic is initiated by the SNMP-based network management station, 
which addresses the managed entities in its management domain. Only the 
addressed managed entity answers the polling of the management station (except 
for trap messages).  
The managed entities include a function called an SNMP agent, which is 
responsible for interpretation and handling of the management station requests to 
the managed entity, and the generation of properly formatted responses to the 
management station. 

The SNMP protocol includes four types of operations:  
•  getRequest: Command for retrieving specific management information from 

the managed entity. The managed entity responds with a getResponse 

message.  

•  getNextRequest: Command for retrieving sequentially specific management 

information from the managed entity. The managed entity responds with a 
getResponse

 message.  

•  setRequest: Command for manipulating specific management information 

within the managed entity. The managed entity responds with a getResponse 
message.  

•  trap: Management message carrying unsolicited information on extraordinary 

events, which are events that occurred not in response to a management 
operation reported by the managed entity.