In troubleshooting multi-WAN setups, we can group the problems we are likely to encounter into three broad categories:

  • There may be a connectivity issue with either your primary or secondary connection.
  • There may be a misconfiguration in your setup.
  • pfSense thinks a gateway is up when it is actually down, or vice-versa.

The first point seems rather obvious, but you'll want to make sure that both connections are working independent of the gateway group. If the second connection accounts for a low percentage of our overall bandwidth (for example, our primary connection is broadband and our secondary connection is DSL), or is part of a failover group, then we might not notice it is not working until the primary connection fails. ...

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