The first sentence in the summary says it all: "Wouldn't it be great to validate password strength prior to synchronization." IBM Software Engineers Nagesh Bhagwat, Abhijit C. Dusane, and Raghavendra T.A. show you how to integrate the IBM Tivoli Directory Integrator Password Synchronizer Plug-in with IBM Tivoli Identity Manger (now known as IBM Security Identity Manager) in order to validate password strength using Tivoli Identity Manager's password policies prior to synchronization.
Password synchronization with Directory Integrator allows you to intercept password changes on several systems. Identity Manager provides the ability to deploy policy-based provisioning solutions. When you put the two together, intercepted passwords can be verified by a password management policy before synchronization, broadening your security reach concerning password control.
And if you're hungry for more on this topic, Software Engineers Mukesh Singh and Yogesh Talekar offer a classic: Debugging and troubleshooting the Password Synchronizer Plug-in.