ldap search for members of a group

I am trying to write a search to return all members of a specific group. However, the filter I am using, only returns the group information, not the member of that group. Can someone help me with the correct format? TIA. ldapsearch -x -LLL -b "dc=myhost,dc=mydomain,dc=com" cn=rds I also tried: ldapsearch -x -LLL -b "dc=myhost,dc=mydomain,dc=com" memberOf=cn=rds which returned nothing.