Testing Trap With Linux Operating System: Difference between revisions
Testing Trap With Linux Operating System (view source)
Revision as of 10:00, 19 September 2019
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$ sudo nano /etc/snmp/snmpd.conf | $ sudo nano /etc/snmp/snmpd.conf | ||
Find a line containing '''"agenAddress udp:127.0.0.1:161"''' and comment it by adding '''#''' symbol at the beginning of the line. Uncomment line '''"agenAddress udp:161,udp6[::1]:161"'''. If you chose | Find a line containing '''"agenAddress udp:127.0.0.1:161"''' and comment it by adding '''#''' symbol at the beginning of the line. Uncomment line '''"agenAddress udp:161,udp6[::1]:161"'''. If you chose different SNMP port change '''161''' into your chosen port. '''Make sure to use exactly the same port as in SNMP package configuration on Teltonika device'''. | ||
[[File:Networking device configurationexample traps with terminal snmpd config v1.png]] | [[File:Networking device configurationexample traps with terminal snmpd config v1.png]] | ||
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===Creating Trap listening service=== | ===Creating Trap listening service=== | ||
This is required for launching Trap listening service with extra configurations, we will use it to describe the log file | This is required for launching Trap listening service with extra configurations, we will use it to describe the log file to which all traps will be recorded. | ||
Use this command: | Use this command: | ||
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'''ExecStart=/usr/sbin/snmptrapd -Ln -f -Lf /var/log/snmptrapd.log''' | '''ExecStart=/usr/sbin/snmptrapd -Ln -f -Lf /var/log/snmptrapd.log''' | ||
This configuration will write the log into ''' ''/var/log/'' ''' folder and into ''' ''snmptrapd.log'' ''' file. You can change the log file directory and file name. | This configuration will write the log of caught Trap messages into ''' ''/var/log/'' ''' folder and into ''' ''snmptrapd.log'' ''' file. You can change the log file directory and file name. | ||
[[File:Networking device configurationexample creating snmptrapd service v1.png]] | [[File:Networking device configurationexample creating snmptrapd service v1.png]] | ||
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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]] | 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: | After downloading the MIB file, place it in ''' ''/usr/share/snmp/mib'' ''' directory, you can use this command: | ||
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[[File:Networking device configurationexample traps with terminal snmptarpd start v1.png]] | [[File:Networking device configurationexample traps with terminal snmptarpd start v1.png]] | ||
To restart or launch | To restart or launch the service you can use this command: | ||
$ sudo /etc/init.d/snmptrapd restart | $ sudo /etc/init.d/snmptrapd restart | ||
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If SNMP manager caught any traps, connection information can be represented with service status information. | If SNMP manager caught any traps, connection information can be represented with service status information. | ||
'''Important note:''' if status shows failed message, one solution could be changing the SNMP Trap port, some other process might be using the described port. | |||
===Testing if SNMP Trap listening service works=== | ===Testing if SNMP Trap listening service works=== | ||
First 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 | If any Trap was triggered, you can check, if Trap message was caught and logged. Check service '''status''' to see if any connections were established. | ||
Open ''' ''/var/log/snmptrapd.log'' '''. If you specified different directory and file name, open it. Example commands: | Open ''' ''/var/log/snmptrapd.log'' '''. If you specified different directory and file name, open it. Example commands: | ||
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snmptrapd.log file after triggering ''' ''trapDigitalRelayOutputStatus'' ''' by changing '''Digital relay output''' value in WebUI (Services -> Input/Output, Output tab -> ON/OFF tab using RUT955). | 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]] | [[File:Networking device configurationexample traps with terminal log file after catching trap v1.png]] | ||