How To Install and Use SNMP On Linux Tutorial with Examples?

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Today we will look SNMP in Linux operating systems. Simple network management protocol named snmp is designed for getting info and setting configuration in it entities. These entities may be switch, router, pc, cabinet, printer etc. Snmp was very popular in 2000s. today it is popular too but used for information gathering. Especially monitoring which will be examined later is made today with snmp. Snmp has an index database which named Management Information Base (MIB) used for data classification. Vendors generally publish their MIBs. For example Cisco MIB can be found http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml . The system that gathers snmp info generally named Network management station. The systems that provides info or apply settings about yourself named Managed device. Agent is a tool that runs on Managed Device and responsible for snmp. Snmp works with udp, ip, tcp, unix, udp6, tcp6. Lets start typing command

Install SNMP Packages

Fedora, CentOS, RedHat

Install SNMP Packages
Install SNMP Packages

Ubuntu, Debian, Mint, Kali

Firstly we install snmp daemon, library and tool with this command in fedora. Also we can install it Debian based distributions like Ubuntu from official repositories.

Start SNMP Service

After installing check the status of snmp service named snmpd. As it shown it is not started so we start it and check again the status

Check SNMP Service

We can check the SNMP daemon or service status with the following command.

LEARN MORE  How To Install and Setup SNMP Service or Daemon For Linux

Check SNMP Service 
Check SNMP Service 

Configuration File

SNMP daemon configuration file is stored under /etc/snmp with the name snmpd.conf .

Change Public Community String

We change the public community string with ismailbaydan in this line

Restart Service To Reload New Confguration

Restart the service for the changes effects configuration.

Run snmpwalk

Here we run snmpwalk for system ouid with new password and snmp community version 2. So we getll all value in the system ouid and in its sub branches.

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