NMIS is a powerful network management system which is open source and free for a highly capable tool.
Setup SNMP Trap Daemon
NMIS8 Setup
NMIS 8.4.1 has included some Cisco and Generic MIBS and added the ability to view the SNMP traps in the NMIS logging tool.
First you will want to make sure your servers NET-SNMP install is setup appropriately. Refer to these install instructions:
SNMPD, Net-SNMP and collecting stats of the NMIS server itself
Next you will need to copy the options file to the right location and restart the daemon.
cp /usr/local/nmis8/install/snmptrapd.options /etc/sysconfig/snmptrapd cp /usr/local/nmis8/install/snmptrapd.conf /etc/snmp/snmptrapd.conf service snmptrapd restart
You can test the MIB resolution with this command
snmptranslate -m ALL -M /usr/local/nmis8/mibs/traps 1.3.6.1.4.1.9.9.43.1.1.6.1.5.34
Which should result in:
CISCO-CONFIG-MAN-MIB::ccmHistoryEventConfigDestination.34
NMIS9 Setup
NMIS 9 has included some Cisco and Generic MIBS and added the ability to view the SNMP traps in the NMIS logging tool.
First you will want to make sure your servers NET-SNMP install is setup appropriately. Refer to these install instructions:
SNMPD, Net-SNMP and collecting stats of the NMIS server itself
CentOS/RHEL 7.x
Next you will need to copy the options file to the right location and restart the daemon.
sudo cp /usr/local/nmis9/conf-default/snmpd/snmptrapd.options /etc/sysconfig/snmptrapd sudo cp /usr/local/nmis9/conf-default/snmpd/snmptrapd.conf /etc/snmp/snmptrapd.conf sudo service snmptrapd restart
Verify Operation
You can test the MIB resolution with this command
snmptranslate -m ALL -M /usr/local/nmis9/mibs/traps 1.3.6.1.4.1.9.9.43.1.1.6.1.5.34
Which should result in:
CISCO-CONFIG-MAN-MIB::ccmHistoryEventConfigDestination.34
Send a Test Trap
To verify operation you can send a test trap either locally or from another Linux server, this example sends an Opmantek event trap.
sudo snmptrap -v 2c -c public 127.0.0.1 80000 1.3.6.1.4.1.4818 1.3.6.1.4.1.4818.1 s Event
The trap will appear in either /usr/local/nmis8/logs/trap.log or /usr/local/nmis9/logs/trap.log
Add New SNMP MIBS for Trap Processing
If you are receiving SNMP traps from devices which are just numbers, then you will need to add the MIBS so that the SNMP trap daemon can decode them them for you. First you need to identify the required MIB files and any dependant MIB files and then copy those files to the directory /usr/local/nmis8/mibs/traps and restart the SNMP trap daemon.
service snmptrapd restart
You can test the decoding using the snmptranslate command, which was described in a previous section.