# Proposers - Lluis Gifre (CTTC) - Ricard Vilalta (CTTC) # Description Implement a new SBI based on IETF L2VPN YANG Service Model [Ref-1] to enable hierarchy of TeraFlowSDN controller. # Demo or definition of done The new feature should enable connecting 2 instances of TeraFlowSDN controller in a parent-child manner. A demonstration at OFC'23 conference has been submitted. This demo will make use of this feature. # References 1. [IETF RFC8466](https://datatracker.ietf.org/doc/rfc8466/) # Feature Design (for New-Features) ## Clarifications to Expected Behavior Changes A new Device Driver and Service Handler should be implemented. Besides, the appropriate changes in PathComp, Device Types, etc. should be addressed. The end-to-end workflows should not need any modification.