Overview; Snmp Overview; Snmp Basic Components; Snmp Functionality - ADTRAN NetVanta 1570 Series Configuration Manual

SNMP in the NetVanta 1570

1. Overview

This document explains the fundamentals of Simple Network Management Protocol (SNMP), and its
configuration on Adtran switch engine (ASE) NetVanta 1570 Series products. Included in this guide is a brief
introduction to SNMP concepts and functionality, the basic SNMP configuration steps using both the graphical
user interface (GUI) and command line interface (CLI), and a brief troubleshooting section.

2. SNMP Overview

SNMP is the Internet Engineering Task Force (IETF) industry standard Application Layer protocol for remotely
managing networks. SNMP provides management services that include automatic notification when
unacceptable network conditions exist, status polling of network devices, and the ability to edit configuration
settings. SNMP is defined in the requests for comment (RFCs) 1155, 1157, 1212, and 1441 through 1452.

SNMP Basic Components

The three basic components of SNMP are the network manager, SNMP agent, and the management infor-
mation bases (MIBs).
Network Manager
The network manager is the control program that collects, controls, and presents data pertinent to the
operation of the network devices. The network manager runs on a server called a network management station
(NMS).
SNMP Agent
The SNMP agent is a control program that responds to queries and commands from the network manager and
returns requested information, or invokes configuration changes initiated by the network manager. The SNMP
agent resides in each ASE network device.
MIB
A MIB is an index to the organized data within a network manager that allows information exchange between
the network manager and SNMP agent to operate efficiently. After installing the MIBs, the network manager is
familiar with the operating parameters that can be controlled or monitored, and references the parameters with
a numerical identification. The parameters are known as MIB object identifiers (OIDs) or MIB variables.

SNMP Functionality

The SNMP components operate similarly to client/server-based connections. The network manager
communicates with the SNMP agent to extract statistics from its MIB variables, and the NMS sends requests to
the SNMP agent that accesses the MIB variables and responds to the NMS with values. The NMS can also
request changes to MIB settings. Configuration changes are initiated by messages from the NMS to change a
variable, after which the SNMP agent changes the value in the MIB. Communication between the SNMP
components is possible with the use of the SNMP basic messages over Internet Protocol (IP) as outlined in
.
Table 2 on page 7
6AMCCG0018-29A
Overview
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