HI Nikhil,
there are two ways to configur F5 on top of tomcats with SSL.
1) Enable SSL on the F5:
Nothing to do on the BO Tomcat service side, All reqeusts will go through the Loadbalancer SSL.
This needs to be done by the network team
2) Enable SSL on the Tomcat Side:
you need to enable SSL on the individual tomcat side and 8443/443 ports needs to be configured in server.xml. same ports needs to be used to configure LB on top of Tomcat.
1185443 - How to configure Tomcat to use Secure Sockets Layer (SSL)
hope this answers your question.