September 27, 2011, 6:09 PM — Chalk up another big partnership win for Microsofts Hyper-V from the world of virtual, programmable switching. NEC's OpenFlow-based network fabric, ProgrammableFlow, will be integrated with Windows Server 8 and Hyper-V when Windows Server 8 becomes available, NEC says.
Microsoft has not formally revealed when that will be, although years ago Redmond promised a 2012 delivery date and it previewed developer versions of the Windows 8 client and server operating systems at its BUILD conference earlier this month.
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The NEC announcement is interesting for network professionals interested in exploring a standardized, open source virtual switch like OpenFlow's software-defined networking architecture. NEC's new product, dubbed for now as the ProgrammableFlow vPFS Virtual Switch for Windows Server 8, will make use of new capabilities coming in Windows Server 8. It will offer features like network policy mobility, monitoring, programmability for Hyper-V environments. The virtual switch will include multi-path load balancing functions.
An OpenFlow-based virtual switch offers advantages to both Microsoft and Hyper-V users compared to Cisco's approach, says an NEC spokesperson. "Cisco presented Nexus 1000v which is a proprietary solution. However, NEC is based on OpenFlow which is an open solution, which is an advantage for Microsoft because it will not be locked in to any particular vender. Also, NEC's solution doesn't change any packet format such as adding tags," the spokesperson told Network World.
OpenFlow is an open source protocol for software-defined networking, meaning system builders can modify it and users can program it to define the paths their network traffic should take and under what conditions, regardless of the underlying hardware. OpenFlow puts more network design controls into the hands of the system builders, application developers and network architects compared to traditional switches that use proprietary software and controls.