CONTENTS

 1 Scope 
2 References 
3 Terms and definitions       
        3.1 Terms defined elsewhere    
        3.2 Terms defined in this Recommendation       
4 Abbreviations   
5 Conventions     
6 DCN characteristics        
        6.1 TMN application   
        6.2 ASON application 
        6.3 Other applications requiring communication networks         
        6.4 Separation of various applications  
7 DCN functional architecture and requirements      
        7.1 Specification of data communication functions         
        7.2 Provisioning requirements   
        7.3 Security requirements         
Annex A – Requirements for three-way handshaking     
        A.1 Point-to-point three-way adjacency TLV  
        A.2 Adjacency three-way state
Annex B – Requirements for automatic encapsulation     
        B.1 Introduction          
        B.2 Scope    
        B.3 Description of the AE-DCF           
        B.4 Requirements and limitations          
Appendix I – Constraints of the interworking functions in DCN     
        I.1 General assumptions        
        I.2 Common to all scenarios  
Appendix II – Example implementation of automatic encapsulation     
       II.1 Introduction           
       II.2 Updates to Dijkstra's algorithm       
Appendix III – Commissioning guide for SDH NEs in dual RFC 1195 environment and impact of automatic encapsulation option     
      III.1 Introduction           
      III.2 Integrated IS-IS without automatic encapsulation    
      III.3 Integrated IS-IS with automatic encapsulation         
Appendix IV – Example illustration of packet 1+1 protection     
       IV.1 Packet 1+1 protection overview   
       IV.2 Packet 1+1 protection illustration  
       IV.3 Operation of selector algorithm under various failure scenarios       
Bibliography