The Open Network Operating System community has released a new version of its SDN framework, called "Emu." Key updates included contributions from AT&T and ON.lab related to the Central Office Re-Architected as Datacenter concept, first introduced in the ONOS Cardinal release in May 2015.
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CORD is a way of using commodity white-box switches and servers to deploy virtual network functions (VNFs) as carrier services, using the Open Network Operating System as a control plane for leaf-spine network fabrics. This framework enables telecom carriers to transform carrier functions -- often deployed using specialized hardware -- into virtual infrastructure.
Since network functions virtualization (NFV) requires running VNFs as software appliances on a virtual infrastructure, the ONOS Emu release supports integration with the next -- Brahmaputra -- release of OPNFV. Other network controllers such as OpenDaylight and OpenContrail will also integrate with OPNFV, so users have options for network controllers, in addition to ONOS.
Emu’s CORD contributions includes features such as Resource Reservation Protocol support, Yang models from ClearPath, a service function chaining manager, meter and QinQ tunneling. Preparing these features, as well as others required for carrier-grade software infrastructure, was important so that CORD field trials with AT&T can begin in 2016.
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