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Testing Trap With Linux Operating System (view source)
Revision as of 10:46, 19 September 2019
, 10:46, 19 September 2019no edit summary
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===Loading MIB file===
===Loading MIB file===
MIB file will be used to translate OID codes to more readable format
MIB file will be used to translate OID codes to more readable format.
If you dont have the MIB file download it from SNMP packge WebUI window [[SNMP configuration example#SNMP Configuration]]
After downloading the MIB file, place it in ''' ''/usr/share/snmp/mib'' ''' directory, you can use this command:
$ sudo cp Downloads\TLT-MIB.txt /usr/share/snmp/mibs/TLT-MIB.txt
Now edit file ''' '' /etc/snmp/snmp.conf'' '''. Example of the command:
$ sudo nano /etc/snmp/snmp.conf
Find this line:
'''mibs :'''
and change it to:
'''mibs +ALL'''
to load all existing MIB files in ''/usr/share/snmp/mibs'' directory.
[[File:Network device configurationexample traps with terminal snmp config v1.png]]
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===Launching Trap listening service===
To launch SNMP Trap listening service use this command:
$ sudo /etc/init.d/snmptrapd start
[[File:Networking device configurationexample traps with terminal snmptarpd start v1.png]]
To restart or launch it you can use this command:
$ sudo /etc/init.d/snmptrapd restart
[[File:Networking device configurationexample traps with terminal snmptarpd restart v1.png]]
To stop the service use this command:
$ sudo /etc/init.d/snmptrapd stop
[[File:Networking device configurationexample traps with terminal snmptarpd stop v1.png]]
To read service status use this command:
$ sudo /etc/init.d/snmptrapd status
[[File:Networking device configurationexample traps with terminal)snmptrapd status v1.png]]
If SNMP manager caught any traps, connection information can be represented with service status.
===Testing if SNMP Trap listening service works===
Firs make sure that SNMP Trap package has Trap rules configured in order to test if listening service works correctly. More information here [[SNMP configuration example#Trap Configuration]]
If any Trap was triggered you can check if Trap message was caught and logged. Check service '''status''' to see if any connections were esablished.
Open ''' ''/var/log/snmptrapd.log'' '''. If you specified different directory and file name, open it. Example commands:
$ sudo cat /var/log/snmptrapd.log
$ sudo more /var/log/snmptrapd.log
$ sudo nano /var/log/snmptrapd.log
snmptrapd.log file after triggering ''' ''trapDigitalRelayOutputStatus'' ''' by changing '''Digital relay output''' value in WebUI (Services -> Input/Output, Output tab -> ON/OFF tab using RUT955).
[[File:Networking device configurationexample traps with terminal log file after catching trap v1.png]]
