Virtual Business Gateway - TR-328


  • The first standard for distributed virtualized Customer Premises Equipment (vCPE)
  • Meets today’s provider demand for standardized, carrier-class, interoperable solutions
  • Technical and business platform for multi-vendor, multi-service growth
  • Various deployment options shown below
Download the TR-328 specification on the Technical Reports page

TR-328 Summary


  • TR-328 specifies the virtual Business Gateway (vBG) system architecture. The vBG system virtualizes some of the functionality of a Business Gateway into a flexible hosting environment which may be located at the customer premises, in the operator's network, such as a CloudCO or using a combination of the two
  • With the vBG system architecture, the functions provided traditionally by the BG are now distributed between a simplified on-site physical device called the pBG (physical Business Gateway) and a virtualized component - the virtual Business Gateway. The vBG hosting environment can benefit both from network equipment and recent network virtualization technology
  • TR-328 describes the motivations to deploy the vBG System architecture, based on the use cases that it enables. In particular, it facilitates simplification of the customer located equipment, customer self-provision through a portal, rapid introduction of new services, decommissioning of unsuccessful ones, and upselling value-added services. All without the need to deploy specialized hardware devices to remote enterprise sites. Examples of value-added services include: enterprise class firewall, Wide Area Network optimization, etc.

What's the impact?

  • Accelerates revenue with the ability of providers to market more value-added services
  • TR-328 enables SD-WAN spearheaded by The Open Networking User Group (ONUG)
  • With 50% of infrastructure spending slated to move to the cloud, standardized delivery from virtualized CloudCO will enable this significant shift in the industry

Public Resources

Related workTitle
TR-359
A Framework for Virtualization
TR-345
Broadband Network Gateway and Network Function Virtualization
TR-328
Virtual Business Gateway
TR-317
Network Enhanced Residential Gateway

Why now?

  • Service providers are seeking this solution as part of their SDN/NFV transformation. This is evidenced by providers in the Forum's own Service Provider Action Council, analyst surveys, and public statements and commentary
  • Following trials and early adoptions the market is ready for standards based on experience gained from specific experiences
  • Open source facilitates creating minimum viable products(MVP) but does not lend itself to the development of mass-market fully scalable products. This new work facilitates of consistent, interopable solutions need for mass deployment
  • Open source is good and rapid way to start projects but has limitations in carrier-class quality and interoperability. It's standards that create very large markets and is the motivation for TR-328

Why the Broadband Forum?

  • TR-328 connects to all of the Broadband 20/20 initiatives, especially TR-317 virtual Residential Gateway, Ultrafast, CloudCO and Performance-Aware IP services
  • Missing a standardization framework, ISG has defined a top-level frameworks and NFVI infrastructure and how it's built and used in limited use cases  (e.g. vCPE). This is the much-needed first standard to define both equipment specification and systems/functional, distributed architecture - defining the customer and CloudCo physical and virtual components."
  • This new BBF specification complements work of other bodies working on SD-WAN and NFV
  • This work draws on experience gained thus far by providers and integrators and provides the first standard that can be used as a trusted practical reference in RFPs