The OpenDaylight project is a multi-stakeholder effort being run under the auspices of the Linux Foundation. In addition to Cisco, other vendors participating in the effort include Arista Networks, Big Switch Networks, Brocade, Citrix, Dell, Ericsson, Fujitsu, HP, IBM, Intel, Juniper Networks, Microsoft, NEC, Nuage Networks, PLUMgrid, Red Hat, and VMware.
At the core of OpenDaylight is the goal of creating an open source Software Defined Networking (SDN) 
framework. Part of that framework will be some form of SDN controller, which is where Cisco might have a big impact.
Cisco ONE (One Network Environment) is a broad effort from Cisco, first announced in June of 2012. The Cisco ONE Controller technology was announced in February of this year.
David Ward, CTO of engineering and chief architect at Cisco Systems, said during an investor call on Thursdaythat the OpenDaylight effort is a new tool for Cisco to help build a developer community around SDN.
Read the full story at Enterprise Networking Planet:
What is Cisco’s Biggest Open Source Contribution Ever?
Sean Michael Kerner is a senior editor at InternetNews.com, the news service of the IT Business Edge Network, the network for technology professionals Follow him on Twitter @TechJournalist.