RAD Data comm Modular Access Device with Integrated Router Manuel D’Utilisation

 

SNMP Environment 

C-1 

This appendix provides the specific information required for managing FCD-IPM 
with the Simple Network Management Protocol (SNMP). 

This section describes the SNMP environment. 
The SNMP management functions of the FCD-IPM are provided by an internal 
SNMP agent, which can use in-band and out-of-band communication. 
The SNMP management communication uses the User Datagram Protocol (UDP). 
UDP is a connectionless-mode transport protocol, part of the suite of protocols of 
the Internet Protocol (IP). 
This section covers the information related to the SNMP environment. 

The SNMP management protocol is an asynchronous command/response polling 
protocol. All of the 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 (that is, events which occurred not in response to a management 
operation) reported by the managed entity.