5G Wireless Wireline Convergence User Plane Encapsulation (5WE)
draft-allan-5g-fmc-encapsulation-05

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Last updated 2020-08-06 (latest revision 2020-07-26)
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Internet Draft                                 Dave Allan, Ericsson ed.          
Intended status: Informational               Donald Eastlake, Futurewei         
Expires: September 2020                          David Woolley, Telstra 
                                                              July 2020 
             
 
    5G Wireless Wireline Convergence User Plane Encapsulation (5WE) 
                  draft-allan-5g-fmc-encapsulation-05 
 
 
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 snoop certain packet 
   fields, carries 5G QoS information associated with the packet data, 
   and provides efficient encoding. 
    
Status of this Memo 
    
   This Internet-Draft is submitted to IETF in full conformance 
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   This Internet-Draft will expire on January 2021. 
    
Copyright and License Notice 
    
   Copyright (c) 2020 IETF Trust and the persons identified as the 
   document authors.  All rights reserved. 
    

 
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Internet-Draft     draft-allan-5g-fmc-encapsulation           July 2020 
 

   This document is subject to BCP 78 and the IETF Trust's Legal 
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   (http://trustee.ietf.org/license-info) in effect on the date of 
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Table of Contents 
    
   1. Introduction...................................................2 
   1.1. Requirements Language........................................3 
   1.2. Acronyms.....................................................4 
   2. Data Encapsulation Format......................................4 
   3. Acknowledgements...............................................5 
   4. Security Considerations........................................5 
   5. IANA Considerations............................................6 
   6. References.....................................................6 
   6.1. Normative References.........................................6 
   6.2. Informative References.......................................6 
   7. Authors' Addresses.............................................7 
    
1. Introduction 
    
   Converged 5G ("fifth generation") wireline networks carry user data  
   between 5G residential gateways (5G-RG) and the 5G Access Gateway 
   Function (identified as an Fixed-AGF (FAGF) by 3GPP in [TS23716]) 
   across deployed access networks based on Broadband Forum [TR101] and 
   [TR178].  
    
   The transport encapsulation used needs to meet a variety of 
   requirements including the following: 
    
   -  The ability to multiplex multiple logical connections (Protocol 
     Data Unit (PDU) Sessions as defined by 3GPP) within a VLAN 
     identified point to point logical circuit between a 5G-RG and an 
     FAGF. 
    
   - To allow unmodified legacy equipment in the data path to identify 
      the encapsulation and snoop specific fields in the payload. Some 
      access nodes in the data path between the 5G-RG and the FAGF 
      (Such as digital subscriber loop access multiplexers (DSLAMs) and 
      optical line terminations (OLTs)) currently snoop into packets 
      identified by specific Ethertypes to identify protocols such as 
      the point to point protocol over ethernet (PPPoE), IP, ARP, and 

 
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Internet-Draft     draft-allan-5g-fmc-encapsulation           July 2020 
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