GarrettCom MNS-6K-SECURE 14.1.4 Manual Do Utilizador

imple Network Management Protocol (SNMP) enables management of the network. 
There are many software packages which provide a graphical interface and a graphical view 
of the network and its devices. The graphical interface and view would not be possible 
without SNMP. SNMP is thus the building block for network management. 

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NMP provides the protocol to extract the necessary information from a 

etworked device and display the information. The information is defined and 

stored in a Management Information Base (MIB). MIB is the “database” of the 

network management information.  

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SNMP has evolved over the years (since 1988) using the RFC process. Several RFC’s today define 
the SNMP standards. The most common standards for SNMP are SNMP v1 (the original version 
of SNMP); SNMP v2 and more recently SNMP v3.  
 
SNMP is a poll based mechanism. SNMP manager polls the managed device for information and 
display the information retrieved in text or graphical manner.  Some definitions related to SNMP 
are 
 
Community string – A text string used to authenticate messages between a management station 
and an SNMP v1/v2c engine 
 
Simple Network Management Protocol (SNMP) – A network management protocol that 
provides a means to monitor and control network devices, and to manage configurations, 
statistics collection, performance, and security. 
 
Simple Network Management Protocol Version 2c (SNMPv2c) – The second version of 
SNMP, it supports centralized and distributed network management strategies, and includes 
improvements in the Structure of Management Information (SMI), protocol operations, 
management architecture, and security 
 

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