The Architecture and Transport Architecture (ATA) Working Area (WA) has a rich history in defining various BNG architectures and requirements, from classic functions such as L2TP LAC to more recent functions such as Network Enhanced Residential Gateway (NERG) and Public Wi-Fi access in MS-BNG. The MS-Disaggregated BNG (DBNG) is an on-going project at ATA. TR-459 serve as a foundation document in defining the the architecture and requirements for a DBNG. Standardizing interfaces and protocols will ensure interoperability between various types of control planes and user planes deployments. One of the key objective TR-459 is to ensure the DBNG provides the same broadband service offerings as a classic MS-BNG. Compared to a classic MS-BNG, the MS-DBNG have several key advantages such as independent user plane and control plane scaling, independent control and user plane life cycle management, and centralized control plane for configuration. The separation of the control plane and user plane enables more efficient use of resources and simplifies operations. In addition, BBF is a forum that allows synergy amongst various work area and creates a unified vision for the broadband industry. An example of this is WT-459 the protocol selected for the State Control Interface (SCI) named, Packet Forwarding Control Protocol (PFCP). PFCP, a protocol defined by 3GPP in TS 29.244 for control and user plane separation (CUPS) communication, is used for 4G and 5G 3GPP architecture. In WT-458, CUPS for fixed mobile convergence, BBF again selected PFCP for the SCI. This is one of many examples of how BBF is providing a platform for all stakeholders to collaborate and create synergy across different Working Areas with a unified vision for Broadband. The DBNG project continue to define and study new architecture and new requirement of interest to service providers and vendors. DBNG YANG modeling, DBNG CG-NAT, and DBNG User Plane traffic steering are just some of the current working projects related to DBNG. New DBNG topics are encouraged to be brought to the ATA group through contributions, the following link provide the most up-to-date topics.
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