Virtual Server doesn't return ping

Hi I have the same requirement coming from our customer, they use a ping to a VS to monitor the availability of the application. What we would like to achieve is that BIG-IP should not reposnd to a ping to VS if the pool is down here is a sample Irule that of course is not working :

 

 

rule ICMP_DENY_ON_POOL_DOWN {

 

 

when CLIENT_DATA {

 

 

if { [[LB::status pool NOME] eq "down"] and [[IP::protocol] == 1] }

 

 

{ drop }

 

 

}

 

 

}

 

 

 

Any idea to achieve the goal ??

 

Thanks a lot