RAD Data comm E1/T1 Uživatelský manuál stáhnout pdf (Strana 207)

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.

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RAD Data comm E1/T1 Uživatelský manuál Strana 207