CONTENTS

 1     Scope        
 2     References             
 3     Definitions
 4     Abbreviations and acronyms           
 5     Conventions           
 6     High level requirements for FA information exchange functions        
 7     Information exchange architecture 
        7.1     Overall architecture 
        7.2     Modes of operation  
        7.3     Operation of FA information exchange functions         
        7.4     Functional entities    
        7.5     Reference points       
 8     Information to be exchanged          
        8.1     Parameters not specific to a FA          
        8.2     FA parameters          
        8.3     Parameters exchanged at the reference points           
 9     Security considerations       
Appendix I – Typical network topology for FA parameter exchange    
Appendix II – A usage example – Admission decision process    
       II.1     DiffServ expedited forwarding             
       II.2     IntServ guaranteed rate service          
       II.3     Networks with various granularity flow aggregation (MPLS, FSA in [b‑ITU‑T Y.2121], etc.)    
       II.4     Calculation of the burst-in or equivalently the burst-out            
Appendix III – A usage example – Flow granularity and continuity decision process    
      III.1     FA granularity and continuity decision process
Appendix IV – FIM-FE usage scenarios    
       IV.1     FA table entry writing            
       IV.2     Information management mechanism for multiple ARs in a single network      
       IV.3     Information management mechanism for a single AR over multiple networks  
Appendix V – FIE-FE usage scenarios    
        V.1     Cases of information exchange for multiple-ARs in a network 
        V.2     Cases of information exchange for a single AR in multiple networks    
Appendix VI – Example allocation of FA parameter values    
       VI.1     Mapping rule from flow ID to FA ID   
       VI.2     Bandwidth allocation enforcement method or scheduling method       
       VI.3 Representative (R)    
       VI.4 FA identifier 
       VI.5     Number of flows within the FA           
       VI.6     Maximum packet length divided by link capacity        
       VI.7     Number of hops within the aggregation region or the policy region     
       VI.8     Maximum number of aggregation regions     
       VI.9     Maximum sum of sustainable transfer rates (Rs) divided by link capacity         
      VI.10     Maximum sum of sustainable burst sizes (Bs) divided by link capacity 
      VI.11     Minimum guaranteed service rate divided by sum of Rs (if rate-based) or scheduling priority    
      VI.12     Packet discard priority          
      VI.13     Class (service context)          
      VI.14     Summary    
Appendix VII – Network specific parameter values    
      VII.1     DiffServ network specific parameters
      VII.2     DiffServ with traffic engineering (TE) network specific parameters      
      VII.3     Flow state aware (FSA) network specific parameters  
Bibliography