Configuring MOD_SSL with and without client auth on the same box

[Debashis Roy <r_debashis@xxxxxxxxxxx>]

Hi,
 
I would like to configure two different context roots with MOD_SSL in Apache Httpd, such that one is authenticated using client certificate and the other one does not require SSL client authentication.
Each of these two context roots are eventually delegated MOD_PROXY_AJP two different backend tomcat applications.
How can this be achieved. Any help/pointer highly appreciated.
 
Thanks,
Debashis