Chapter 13 Snmp Management; Snmp Overview; Snmp Basic Components; Network Manager - ADTRAN Atlas 550 User Manual

Chapter 13

SNMP OVERVIEW

SNMP BASIC COMPONENTS

Network Manager

Agent

MIB
61200305L1-1
SNMP Management
As local area network (LAN) environments became standardized over the
past ten years, multivendor equipment grew with competition. It became
necessary to manage various vendor equipment from a single control con-
sole. Simple Network Management Protocol (SNMP) emerged as the stan-
dard for managing commercial TCP/IP networks. The term SNMP broadly
refers to the message protocols used to exchange information between the
network management station and the managed devices, as well as to the
structure of network management databases.
SNMP has three basic components: network manager, agent, and manage-
ment information base (MIB).
The network manager is a control program that collects, controls, and pre-
sents data pertinent to the operation of the network devices. It resides on a
network management station.
The agent is a control program that responds to queries and commands from
the network manager and returns requested information or invokes config-
uration changes initiated by the manager. It resides in each network device.
The MIB is an index to the organized data stored within a network device.
The MIB defines the operating parameters that can be controlled or moni-
tored. When the MIB requests the network manager to retrieve or modify a
particular piece of information about a network device, the network manag-
er transmits that request to the network device. The agent in that device in-
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