WG status update

Adaption call

(1) Draft-kohno-dmm-srv6mob-arch draft

• no significant issue

(2) mup-evaluation draft

• (Tianji) Request to post the issue in detail to DMM mailing.

Presentation

1. Mobility Aware Transport Network Slicing for 5G

• draft-ietf-dmm-tn-aware-mobility, John Kaippallimalil, 15 min.

Question/Comment:

• (Chair)

  • IETF has a lot of transport technologies. Why still this draft
    is stating ppr as the transport?

  • Do you have any implementation of the udp source mapping for
    slicing? - No.

  • Need to work with the transport experts.

• (Takahiro)

  • How about c-plane slice? - the draft text covers the slicing of
    the control plane as well.

• (Sudesh)

  • Is the private network covered? - The draft could be covering
    both private and public network. But having the discussion
    offline to figure out if there are any issues.

Computing aware traffic steering use case of mobile user plane

• draft-duongph-dmm-computing-aware-ts-mup-sr, Dương Phùng Hà,
  10min.

Question/Comment:

• (John)

  • Now looks like this is trying to combine based on the reverse
    manner.

• (Tom)

  • What is the requirement on the data path? Also, what is the
    impact on 5GC? What is the expectation to 5GC? — No intention to
    make any change in 5GC

• (Tianji)

  • CATS-MUP-C could be hacked to 5GC architecture to get the UE
    location, etc which are handled by AMF, etc.. This is requesting
    a lot of things to 5GC...

• (Yuya)

  • Need to clarify the anycast service pdu session in detail...

• (Hannu)

  • Why this draft is submitted in DMM? Because this is not related
    to “mobility”

• (Marco)

  • This draft can introduce the confusion to 5GC/CATS discussion.
    The path/traffic steering should be independent from particular
    mobility system.

• (Arashmid)

  • The draft assumes to use SRv6 but any operators should pick up
    any transport technologies like SRv6, MPLS, etc…

• (Chair)

  • How to advertise the route awarding CATS? - Route is advertised
    with CATS metric (Need to describe it in the draft)

• (Tianji)

  • Why SR? it seems that SR is outhogonal to what you propose in
    the draft.

• (John)

  • You don't need interwork with 3GPP if DNS resolution for that
    service gives the anycast IP address.

• (Xia Chen)

  • Does 5G interface have a parameter to carry the Service-ID? 5GC
    can create a pdu session per slice but this draft requires a pdu
    session per service id. Is this function supported in 5GC? ==>
    The author will discuss later…

SRH Reduction for SRv6 End.M.GTP6.E

• draft-kawakami-dmm-srv6-gtp6e-reduced, Yuya Kawakami, 20min.

Question/Comment:

• (Tom)

  • Is this efficient rather than looking up SRH?
    If removing SRH, this is same as regular IPv6. So, Need to
    clarify.

• (Suresh)

  • How does adressing works for longer prefix, what does protocol
    use to send address? - Interwork segment route and session
    transform route-1 of MUP-SAFI route are used to advertise the
    address and SID.