1     Scope 
 2     References 
 3     Definitions  
 4     Abbreviations   
 5     Conventions     
 6     Reference model  
 7     OAM protocol formats    
        7.1     Encapsulation formats        
        7.2     OAM message format       
        7.3     OAM information fields     
 8     OAM procedures
        8.1     Message encoding/decoding rules  
        8.2     General message processing           
        8.3     Hello message processing (device discovery)          
        8.4     Service level verification message processing          
        8.5     Non-latching loopback message processing
        8.6     Latching loopback message processing      
        8.7     Diagnostic indication message processing   
        8.8     Network applications of loopback 
Appendix I – General receive procedures    
Appendix II – Message flows    
       II.1     Discovery  
       II.2     FTD measurement  
       II.3     FDR/DDR measurement    
       II.4     Non-latching loopback       
       II.5     Latching loopback  
Appendix III – Example of delivery ratio calculation    
      III.1     Ingress processing  
      III.2     Egress processing