Recommended health check option?

[Joey_van_der_Gaag]

I think there are different personal preferences on this forum.
My personal preference is DNS Lookup to 8.8.8.8 and 8.8.4.4 (Google DNS Servers).

This post might help:

Health Check Mechanisms Against Link Failure

The objective of this article is to explain how the different health check methods work, and how to configure them. Health Checks are used to detect the Internet link’s logical connectivity. Without health checks, ISP routing issues may not be detected, thus failover may not perform smoothly. Health Check Methods: PING: The router will send a ICMP/PING packet to the specified IP address (or host name) to test WAN connectivity. DNS Lookup: The router will perform a DNS lookup to the specified…

@MartinLangmaid, this might be something right up your alley?