Hi, I have looked for previous questions regarding this, but haven't been able to find one, so I apologise if it has been asked/answered before.
We have several paths to a remote router that we monitored via it's loopback IP address. Observium does a great job at alerting us when that router is offline, but, I'm unable to find a way to be alerted when we have a single WAN link failure. During a WAN link failure we can still access the remote router via a redundant path, however, we are often not aware that the primary is offline since Observium can still reach the remote router.
Apart from checking if utilisation on the link drops below a certain level, is there any other way that I can perform a check and alert on the above scenario?
Thanks, Luke