1     Scope           
 2     References 
 3     Definitions 
        3.1     Terms defined elsewhere        
        3.2     Terms defined in this
Recommendation            
 4     Abbreviations and acronyms              
 5     Conventions             
 6     Overview   
        6.1     Functional characteristics of SDN for transport networks           
        6.2     Architecture of SDN for transport networks     
        6.3     Interaction between SDN controller and transport network      
        6.4     Interaction between SDN controller and applications   
        6.5     Management functions interactions   
        6.6     Transport resource views        
 7     Controller arrangements     
        7.1     Multi-level control
hierarchy  
        7.2     Multi-layer control      
        7.3     Multi-domain control aspects 
 8     Control components             
        8.1     Call controller components     
        8.2     Connection controller (CC) component              
        8.3     Routing controller (RC) component     
        8.4     Link resource manager (LRM) component        
        8.5     Discovery agent (DA) component         
        8.6     Termination and adaptation performer (TAP) component         
        8.7     Directory service (DS) component        
        8.8     Resource notification controller component   
 9     Topology and discovery       
        9.1     Creation of network topology by auto discovery procedure      
        9.2     Creation of abstracted network topology          
10     Controller
interactions        
       10.1     Interaction type 1       
       10.2     Interaction type 2       
       10.3     Interaction type 3       
       10.4     Interaction type 4       
       10.5     Interaction type 5       
11     Reference points   
       11.1     SDN control plane interfaces 
       11.2     Functional requirements for the CPI  
       11.3     Interaction between NCCs over CPI    
12     Control communications network  
13     Management aspects          
       13.1     Management of SDN controllers          
       13.2     Management of control plane interfaces (CPI)              
       13.3     Management of control communication network (CCN)           
14     Identifiers 
       14.1     Resources in the transport network   
       14.2     Control view of transport resources   
       14.3     Control components 
       14.4     Control artefacts        
       14.5     Reference points       
       14.6     Control communications network       
15     Scalability considerations   
       15.1     Scalability of the controller    
       15.2     Scalability of components      
16     Connection availability enhancement techniques   
       16.1     Data plane protection              
       16.2     Controller based restoration 
Annex A – Use of the CIM to represent resources     
Bibliography