Hi Karthik,You need to configure the logout.html page so that it loads the LogoffURI for each of the cookie domains for which the user may have a session. This is described in the Comprehensive Logout chapter of the documentation:
In a single sign-on environment, the session cookies are removed only from the local cookie domain and the cookie provider domain associated with the Web Agent. For single sign-on across multiple cookie domains, the full log-off feature of CA Single Sign-On does not automatically log a user off across all the cookie domains that the user has visited.
To configure log-offs across multiple cookie domains, use the following process: