The latest version of the Open Network Operating System (ONOS), which is named Blackbird, features a highly available, scalable SDN control plane featuring northbound and southbound open APIs and paradigms for a diversity of management, control, and service applications across mission critical networks. It is architected as a distributed but logically centralized control plane to achieve high performance, scale-out and high availability. ONOS' high availability characteristics include full recovery from events such as switch and link failure, node failure, entire ONOS cluster failure, single node cluster failure, cluster partitioning and device-node communication failure. The ONOS Blackbird release defines the following set of metrics to effectively measure performance and other carrier-grade attributes of the SDN control plane.
