[Teas] IETF TE Topology YANG Model Design Meeting Notes - 2016-05-23

[Xufeng Liu <[e-mail]>]

Participants:
Igor, Xufeng, Pavan, Dieter, Sergio, Himanshu

- Information sources
  > Discussed two use cases related to information sources:
    1) Provider applies policies to pick the most preferred.
    2) Provider does not apply policies and the decision is done by customer.
  > The model currently supports 1) well, but is not clear on 2).
  > Agreed to clarify the model by:
    1) Change "alt-information-sources" to "information-sources" to
       include all sources, including the selected one.
    2) For use case 1), the applied attribute has the selected value, and
       "information-sources" list all available sources.
       For use case 2), the applied attribute does not have value, and
       "information-sources" list all available sources.

- Connectivity Matrix
  > Discussed the comment from Cyril "to add a Label (Following
    RFC7579) restrictions".
  > Participants agreed that such constraint information is useful.
  > Participants agreed that such constraint information is generic
    enough to be used in various layers and use cases, including optical
    OTN, and abstract network topologies.
  > Participants agreed to send the suggestion TEAS WG to add such
    information to te-topology model.
  > The potential model change can be:
    For each connectivity-matrix entry, add:
      list of labels
        list types
               o inclusive-list
               o exclusive-list
               o inclusive-range
               o exclusive-range
               For each label
               o exclusivity (true/false)
Working members: please provide any comments.

Thanks,

- Xufeng

Note: Please drop me an email if you need an invite for joining the weekly call.

PS. Meeting on May 30 will be canceled for US holiday.