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Understanding OPNFV

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Understanding OPNFV 66 ONOS ONOS is a modular SDN controller specifically built for service providers with carrier-grade considerations such as scalability, high performance, and high availability in mind. The core of ONOS is distributed, so it can scale horizontally. Northbound interfaces are based on an intent framework with a global network view. Southbound interfaces include OpenFlow and Netconf to be able to manage both virtual and physical switches. ONOS is managed by the Open Networking Lab (ON.lab), a member-funded organization with 17 key members that include operators such as AT&T, China Unicom, Comcast, Google, NTT Communications, SK Telecom, and Verizon, and a number of technology providers. OpenContrail OpenContrail is an SDN controller that was open sourced by Juniper. It targets both cloud and NFV use cases for enterprises and service providers. Unlike the other two SDN controllers, OpenContrail uses BGP and Netconf as the primary southbound interfaces to manage physical switches and routers, and XMPP to manage virtual router elements in compute nodes. Given the XMPP choice instead of OpenFlow, OpenContrail does not interoperate with OVS and installs a vRouter on each compute node. For overlays, OpenContrail leverages MPLS protocols over GRE, UDP or VXLAN. The OpenContrail architecture has three types of controllers that all scale horizontally: control node cluster, configuration cluster, and analytics cluster. OVN OVN stands for Open Virtual Network. It is being developed by the same team that

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