Hi Arnold, The warning message " Rule references an unknown pool via pool.activenodes " is emitted by the TrafficScript function 'pool.activenodes( $pool )'. In the code above, $pool should only be either: one of the values in $poolmap (" p_RCD_prod.start.rs.com_http ", " p_RCD_prod.rs.com_http ", etc), or... the empty string Line 20-21 in the code captures the empty-string possibility and terminates the rule by sending a response immediately to the client. This suggests that one of the values in $poolmap is incorrect - it does not correspond to the name of a pool in your configuration.  Perhaps there is a typo or mismatch in your config? It's unfortunate that the error message does not contain the name of the pool that does not exist.  If you can't determine which value (if any) is wrong, then you could insert this line just before line 26 where you call 'pool.activenodes( $pool )': log.info( "Checking pool '" . $pool . "'" ); This will log the name of the pool, and when you next see the 'unknown pool' error in your log, look for the 'Checking pool' message next to it to find the name of the pool. regards Owen ... View more