[Teas] Review of draft-ietf-teas-5g-ns-ip-mpls

["Wubo (lana)" <[e-mail]>]

Hi Authors, WG,

I have read draft-ietf-teas-5g-ns-ip-mpls and have several general comments:

1. On the mapping between IETF Network Slice Service SDP and 5G CE, this document and draft-5g-network-slice-application (5g-application) both provide some content. I think it would be more clear to list all 5G CE options in one document and avoid the inconsistency between the two documents. For example, Section 4 Overview of the Realization Model describes three options: VLAN, IP, and MPLS. However draft-5g-application has more options than these. This document says that 5G CEs have BGP protocol mapping, while Section 5.3 of draft-5g-application does not .
2. Section 6 Transport Planes Mapping Models introduces "tunnel group" or "transport planes'. Can you clarify how to manage the tunnel groups? Does tunnel group management also requires topology and resource allocation management? As I am wondering the difference between tunnel group management and NRP management. Per Section 4.2. Control Plane Network Resource Partition Mode of draft-ietf-teas-ns-ip-mpls, NRP has a mode of control plane without data plane encapsulation mechanism.
3. Section 3 5G Network Slicing Integration in Transport Networks defines various distributed CE-PE models which are not used in subsequent sections. Are these different models related to the implementation of QoS mapping, connectivity, or capacity planning? Could you add some text to reflect that?

Thanks,
Bo Wu