XMPP as a scalable multi-tenants isolation solution for ONOS-based Software-Defined Cloud Networks

BGP/MPLS IP VPNs has emerged as a stable solution for L3 tunneling and inter-sites routing and connectivity system over a Wide Area Network (WAN). This solution can be extended via the Extensible Messaging and Presence Protocol (XMPP) to provide simple and scalable multi-tenants isolation technology for cloud networks with Software Defined Networking (SDN) scheme. Also, it provides interoperability between BGP-based WANs and internal SDN-based cloud networking, and avoids inter-subnet or north-south traffic to be routed via central network gateway acting as single point of failure. In this work, we overview this solution and introduce the structure of our implementation of the XMPP as a South-Bound Interface (SBI) framework for the Open Networking Operating System (ONOS); a popular SDN controller Our work allows the deployment of new use-cases based on ONOS.