A management system contains: several (potentially many) nodes, each
with a processing entity, termed an agent, which has access to
management instrumentation; at least one management station; and, a
management protocol, used to convey management information between
the agents and management stations. Operations of the protocol are
carried out under an administrative framework which defines
authentication, authorization, access control, and privacy policies.
Management stations execute management applications which monitor and
control managed elements. Managed elements are devices such as
hosts, routers, terminal servers, etc., which are monitored and
controlled via access to their management information.
Management information is viewed as a collection of managed objects,
residing in a virtual information store, termed the Management
Information Base (MIB). Collections of related objects are defined
in MIB modules. These modules are written using a subset of OSI's
Abstract Syntax Notation One (ASN.1) , termed the Structure of
Management Information (SMI) .
The management protocol, version 2 of the Simple Network Management
Protocol, provides for the exchange of messages which convey
management information between the agents and the management
stations. The form of these messages is a message "wrapper" which
encapsulates a Protocol Data Unit (PDU). The form and meaning of the
"wrapper" is determined by an administrative framework which defines
both authentication and authorization policies.
It is the purpose of this document, Protocol Operations for SNMPv2,
to define the operations of the protocol with respect to the sending
and receiving of the PDUs.