Figure 1-1 SNMP structure
UDP Port161
Request
Response
NM Station
Agent
NM Station
Agent
UDP Port162
MIB
SNMP uses a hierarchical naming convention to identify managed objects and to distinguish
between managed objects. This hierarchical structure is similar to a tree with the nodes
representing managed objects, Figure 1-2 shows a managed object that can be identified by the
path from the root to the node representing it.
Figure 1-2 Structure of a MIB tree
As shown in Figure 1-2, object B is uniquely identified by a string of numbers, {1.2.1.1}. Such
a number string is called an Object Identifier (OID). A MIB tree is used to describe the hierarchy
of data in a MIB that collects the definitions of variables on the managed devices.
A user can use a standard MIB or define a MIB based on certain standards. Using a standard
MIB can reduce the costs on proxy deployment and therefore reduce the costs on the entire
network management system.
SNMP Operations
SNMP uses Get and Set operations to replace a complex command set. The operations described
in Figure 1-3 can implement all functions.
Quidway S5700 Series Ethernet Switches
Configuration Guide - Network Management 1 SNMP Configuration
Issue 01 (2011-10-26) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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