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How To Utilize SNMP Traps For More Efficient Monitoring
More often than not, we enable all alerts to all devices and expect to not get frustrated with the volume of alerts we receive. Setting rules such as finding out the type of traps that are important and some that are not can help ensure high priority items are being handled first. Do you want to know every time a link is up or down? This might be important to know if you have certain ports designated to spare use or in a certain VLAN designated for visiting engineers. SNMP Traps can help make sure you are receiving the alerts for key pieces that help identify problems within your IT infrastructure.
What is an SNMP Trap?
The SNMP Trap mechanism allows devices on a network to send information back to a management host using the SNMP protocol. This is particularly useful on large networks as it can be used in place of active SNMP (where a device is polled for status information), thus reducing network load. Devices can usually be configured to send specific types of trap such as link status changes, BGP, HSRP and many others, making this a flexible monitoring option.
Why is my SNMP trap failing and how to fix it?
Some possible reasons why the SNMP trap rule is not working correctly include a missing trap name, the rule did not match with at least one service check and the blocking of port 162. Make sure to check the exceptions tab within your monitoring solution to check the full output of the SNMP trap and set appropriate trap rules that are most important to your infrastructure. This can show which pieces of information are being received from your equipment that is being monitored. Traps can be received using Windows Event logs, network equipment, Linux OS, and more.
If you want to learn how to cut down on CPU usage and needless notifications, be sure to watch our video that showcases efficient monitoring with SNMP Traps in Opsview!
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