BRAS Configuration backup and trace feature segment changes

hi, I'm looking for tools which could backup BRAS and router configuration automatically, while monitoring special configuration changes. RANCID seems to be able to backup whold configuration, but it seems it could not monitor special feature configuration segment changes ( e.g. changes on OSPF configuraion or drop code mapping configration). Is there any tools to do this ? thanks in advance. Joe Yahoo! Toolbar is now powered with Search Assist.Download it now! http://sg.toolbar.yahoo.com/