Retry downed pool member

The inband monitor does have a retry-time after which it will allow the pool member to be tested again. However you may be looking for an active monitor in conjunction with inband. Active monitors have a property called "up-interval" that allows setting a different polling interval for pool members that are UP vice DOWN (downed pool members would be polled at the rate specified by the 'interval' property). By default up-interval is the same as interval, so the polling interval is the same regardless if the server is up or down.

I cannot tell if you can disable the up-interval - I'd have to lab it later or you can test on a test pool. You could set up-interval to something long so the amount of traffic generated would be negligible. Make sure you configure that monitor with the appropriate checks.