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C
1: I
HAPTER
NTRODUCTION
Simple Network Management Protocol (SNMP)
SNMP is an application-level protocol for managing products such
as bridges on TCP/IP networks. You can issue requests using an
SNMP application. The application passes the requests to the
SNMP agent software on the device to be managed. The agent
carries out the requests and sends responses to the application.
Requests and responses are referred to as SNMP messages.
The SNMP agent on the bridge allows it to be managed by any
SNMP application. This agent complies with RFC 1157, A Simple
Network Management Protocol.
The agent performs network management functions based on
GET and SET operations. These operations retrieve and store
values of variables belonging to the managed device. The
variables are defined in one or more Management Information
Bases (MIBs).
MIB variables are encoded in a subset of the data-description
language Abstract Syntax Notation One (ASN.1), according to the
rules specified by the Structure of Management Information
(SMI). In SMI and ASN.1 terms, a MIB contains objects, each of
which has an assigned unique name, known as an object
identifier (OID).
The names actually used in your management application to refer
to MIB variables depend entirely on that application and may be
different to OIDs.
The bridge supports the following MIBs:
Internet Standard II, as defined in RFC 1158, Management
Information Base for TCP/IP-Based Internets
Internet Bridge MIB, as defined in RFC 1286, Bridge MIB
Internet Ethernet MIB, as defined in RFC 1284, Definitions of
Managed Objects for the Ethernet like Interface Types
DUA1860-0AAA01
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