Resolved! Device unsupported RME 4.2
in Manageability report, it shows that 6509 with sup720-3BXL is not supported. running version 12.(17d)SXB. In the support table shown at:http://www.cisco.com/en/US/docs/net_mgmt/ciscoworks_lan_management_solution/3.1/device_support/table/lms31sdt.ht...