SNMP Environment C-1
Appendix C SNMP Management
This appendix provides the specific information required for managing FCD-IPM
with the Simple Network Management Protocol (SNMP).

C.1 SNMP Environment

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.

SNMP Principles

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.
SNMP Operations
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.