Abnoraml behavior of f5 devices

Hi,

Suddenly all VIPs are shwoing blue due health checking are failed..after that we did sw troubleshooting heath monitor rather than ICMP are marking pool members down. However for standby this is not case no health monitoring marking the pool members down.

After opening the case with f5 f5 tac is saying binary config got corrupted for active device due to.which its loaded new config and also observed that helath monitoring rather than gateway ICMP are not working properly..as per tac..

Anybody has any idea why its happen ??