Re: [Last-Call] Last Call: <draft-allan-5g-fmc-encapsulation-07.txt> (5G Wireless Wireline Convergence User Plane Encapsulation (5WE)) to Informational RFC

[Abdussalam Baryun <abdussalambaryun@xxxxxxxxx>]

Dear All,

I still think it needs to be proposed standard (even after receiving explanation from authors) because it includes a different field than RFC2516 which is the QoS field, this field is used in 5WE (5G wireline user plane encapsulation), furthermore the format-TYPE used in this encapsulation is 0x01 for upstream (while in the daft it mentions that this is for downstream, please explain how?), This encapsulation will be used in both PPPoE handling and in 5WE handling.

For this VER=2, ....I suggest two encapsulation TYPE, one for UL and one for DL as mentioned in [TS38.415], the TYPE=0x00 is downstream with RQI and PPI, and the TYPE=0x01 is the upstream without, so the Session ID field replaces the field of spare in [TS38.415]. The PPI field is important for IPv4/IPv6 services as mentioned in [TS23501 ] for DL encapsulations.

The document needs to give information on the session stage (ethertype=0x8864) related to DL 5WE (or downstream) and UL 5WE (upstream). It SHOULD  not be similar to the RFC2516 section 6.

The R bit and o bit should be changed for the UL encapsulations TO, RQI and PPI bit and adding PPP field.

 

This document should mention the sending method per fields in the format, as mentioned in page9  [TS38.415]. The handling of sending and receiving bits, in 5WE may be different than PPPoE, but if the same needs to be mentioned in this document.

Regarding to security consideration I don't think the protocol ID field is needed to be in the format, also the security section should mention the security architecture for 5WE, which may be by referencing TS33.501.

Best Regards

AB

On Fri, Jan 22, 2021 at 4:53 PM The IESG <iesg-secretary@xxxxxxxx> wrote:

The IESG has received a request from an individual submitter to consider the
following document: - '5G Wireless Wireline Convergence User Plane
Encapsulation (5WE)'
  <draft-allan-5g-fmc-encapsulation-07.txt> as Informational RFC

This requests the start of a 2nd IETF Last Call with the intent of expressly calling
attention to the IPR claim associated with this document
(https://datatracker.ietf.org/ipr/3663/).

The IESG plans to make a decision in the next few weeks, and solicits final
comments on this action. Please send substantive comments to the
last-call@xxxxxxxx mailing lists by 2021-02-05. Exceptionally, comments may
be sent to iesg@xxxxxxxx instead. In either case, please retain the beginning
of the Subject line to allow automated sorting.

Abstract


   As part of providing wireline access to the 5G Core (5GC), deployed
   wireline networks carry user data between 5G residential gateways
   and the 5G Access Gateway Function (AGF). The encapsulation method
   specified in this document supports the multiplexing of traffic for
   multiple PDU sessions within a VLAN delineated access circuit,
   permits legacy equipment in the data path to inspect certain packet
   fields, carries 5G QoS information associated with the packet data,
   and provides efficient encoding. It achieves this by specific points
   of similarity with the RFC 2516 PPPoE data packet encapsulation.




The file can be obtained via
https://datatracker.ietf.org/doc/draft-allan-5g-fmc-encapsulation/


The following IPR Declarations may be related to this I-D:

   https://datatracker.ietf.org/ipr/3663/






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