SNMP (Simple Network Management Protocol) Overview
Simple Network Management Protocol (SNMP) is the main protocol of Network Management. With SNMP, network devices are easily managed and conttolled by a central mechanism. It is an application protocol that provide the messaging between the controlled device and the management system.
Basically with SNMP, network devices are managed, their performance can be measured, any troubleshooting actions can be determined and the next level growth of the network can be easily done.
Any device in a network can be managed by Network Management Sytem with the help of SNMP. This can be a router, a switch, a PC or any other devices.
Network Management via SNMP consist of some different terms. These SNMP terms are:
• NMS (SNMP Manager)
• Managed Device
• SNMP Agent
NMS is the Network Management System that manages the SNMP Operations and by doing this controls the Managed devices. The network monitoring and controling facilities is done here. This can be a dedicated device or an application on any device.
Managed Devices is the node that will be managed and controlled by Network Management System (NMS).
SNMP Agent is the sowftware part of the managed device. It collects the information for the device and reports to the NMS (SNMP Manager).
MIB is the storage database for the network management information. It contains the managed device information.
SNMP is the Protocol used in Network Management. It runs on IP and UDP. IT provides different message exchange during the operations. SNMP has three versions.
SNMP has three vertsions. These versions are :
SNMPv1 is the first SNMP version. Only requires a plain-text community string for packet authenticaiton. It has performance and security limitations.