Monitor instance bigip *.*.*.*:443 UP --> DOWN from gtmd (no reply from big3d: timed out)

Hi Hamish,

 

 

 

Could it be possible that the monitor uses the default gateway on the mgmt interface to get its results? I have seen this behaviour before.

 

 

If you have configured an item to be monitored (whichever item: a virtual server, a bigip, etc.) and your bigip has no route for it directly, it'll fall through using the default gateway of the mgmt interface.

 

 

This can be particularly foul if the mgmt gateway actually let's stuff pass.

 

 

 

Kind regards,

 

 

Thomas