Client server is getting exceptions when trying to access F5 VIP.

HI Stephan, This is the correlated issue of pool members going down while application running. Client server access those pool members. This service takes about 30 thousands requests per second about 4 thousands per 10 minutes. Last night when pool members were going up down up down, I asked application guy how much requests were you getting during that time and he said there are gaps of 2 minutes in between the requests. Definitly when F5 will mark pool members down it will not get requests and client server will see exceptions. Now we have to find the reason why pool members are marked down. Does application hangs or due to traffic load it is unable to respond to monitor requests.