[bcause] Short and long term goal

[Liang GENG <[e-mail]>]

Hi all,

Many who attended the BoF agreed on use case and requirement of this work. It is a shame that the "uncertainty" of requirement from other SDOs is blocking on the way. This reminds me the back and forth discussion on Network Slicing Management between IETF and 3GPP 2 years ago. The result was that IP network slicing is so left behind compared with the progress on Core Network (3GPP) and Optical Transport Network (ITU-T). We don't even have a reasonable simple tool for cross-domain VPN service - given the fact it is a most simplest type of network slicing.

I simply don't see a point to let this happening again in IETF. And I see the following 2 main reasons why IETF should take this work on in a timely manner

  1.  As an operator, we have clear requirement to standardize protocol / interface between BNG-UP and BNG-CP for fixed line services. And believe me, if taking FMC/WWC as an extended use case is the concern, China Mobile would be the first to support it as a long term goal - given that we are one of the few operators across the globe who has clear SA 5GC deployment plan. However, there is no conflicts between fulfilling short-term (and clear) goal and being open to the work for long-term goal. It is also too early for a proposed WG to decide a single solution that fulfill all use cases. It makes perfect sense to start with one clear use case and proceed to more when the requirements and interests are there.
  2.  Being called BNG does not make it less-IETF - most of the basic protocols are IETF technologies. I think there is no better place to work this out than in IETF - given the fact this is needed timely and we need an organization with enough people who would like to contribute. See the number of people who attend the BoF. Although the chairs did not ask the "willing to contribute" question - there is no doubt of good participation rate.

I would encourage people should continue the discussion on charter updates in the mailing list - of course it is the AD's decision on advising the next steps.

Best wishes
Liang