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Router RTA ad Packet Loss
If you wanted to monitor round trip average and packet loss you could use these settings. This will use ping to send a warning if RTA is greater than 200ms or the packet loss is 20% or more. It will also send a critical warning if the RTA is greater than 600 ms or the packet loss is greater than 60%.
Lesson 6 | Lesson 8
In reality these settings are too high for most networks. The fact is if your network has 20% loss of packets you do not want a warning ... you want a new network. It is more reasonable to change these settings to 10% warning and 20% critical as most networks need to run and do run very effectively. If you made those changes it would look like this:
check_ping!200.0,10%!600.0,20%
In addition, you will want to change the time of 600 ms to something more reasonable like 100.0 for a warnign and 200.0 for critical These changes would look like this:
check_ping!100.0,10%!200.0,20%
Now of course if these produce false alarms, then adjust to your needs.
define service{
use generic-service
host_name cisco2500
service_description PING
check_command check_ping!200.0,20%!600.0,60%
normal_check_interval 5
retry_check_interval 1
}
Other Links for Help
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NRPE
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