IPv4 NLRI with IPv6 Next Hop Use Cases
draft-mishra-bess-ipv4nlri-ipv6nh-use-cases-08

Document Type Active Internet-Draft (individual)
Authors Gyan Mishra  , Mankamana Mishra  , Jeff Tantsura  , Lili Wang  , Qing Yang  , Adam Simpson  , Shuanglong Chen 
Last updated 2021-02-22
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BESS Working Group                                             G. Mishra
Internet-Draft                                              Verizon Inc.
Intended status: Best Current Practice                         M. Mishra
Expires: August 26, 2021                                   Cisco Systems
                                                             J. Tantsura
                                                            Apstra, Inc.
                                                                 L. Wang
                                                  Juniper Networks, Inc.
                                                                 Q. Yang
                                                         Arista Networks
                                                              A. Simpson
                                                                   Nokia
                                                                 S. Chen
                                                     Huawei Technologies
                                                       February 22, 2021

                 IPv4 NLRI with IPv6 Next Hop Use Cases
             draft-mishra-bess-ipv4nlri-ipv6nh-use-cases-08

Abstract

   As Enterprises and Service Providers upgrade their brown field or
   green field MPLS/SR core to an IPv6 transport such as MPLS LDPv6, SR-
   MPLSv6 or SRv6, Multiprotocol BGP (MP-BGP)now plays an important role
   in the transition of the core from IPv4 to IPv6 being able to
   continue to support legacy IPv4, VPN-IPv4, and Multicast VPN IPv4
   customers.

   This document describes the critical use case and OPEX savings of
   being able to leverage the MP-BGP capability exchange usage as a pure
   transport allowing both IPv4 and IPv6 to be carried over the same BGP
   TCP session.  By doing so, allows for the elimination of Dual
   Stacking on the PE-CE connections making the peering IPv6-ONLY to now
   carry both IPv4 and IPv6 Network Layer Reachability Information
   (NLRI).  This document now provides a solution for IXPs (Internet
   Exchange points) that are facing IPv4 address depletion at these
   peering points to use BGP-MP capability exchange defined in [RFC5549]
   to carry IPv4 (Network Layer Reachability Information) NLRI in an
   IPv6 next hop using the [RFC5565] softwire mesh framework.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute

Mishra, et al.           Expires August 26, 2021                [Page 1]
Internet-Draft      IPv4-NLRI with IPv6-NH Use Cases       February 2021

   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on August 26, 2021.

Copyright Notice

   Copyright (c) 2021 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   6
   3.  eBGP PE-CE IPv4 and IPv6 NLRI over IPv6 Next Hop Peer Use
       Case Interop Testing  . . . . . . . . . . . . . . . . . . . .   6
   4.  RFC 8950 updates to RFC 5549  . . . . . . . . . . . . . . . .   6
   5.  Operational Improvements with Single IPv6 transport peer  . .   8
   6.  Operational Considerations  . . . . . . . . . . . . . . . . .   8
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   9
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   9
     10.2.  Informative References . . . . . . . . . . . . . . . . .  10
   Appendix A.  IPv4 NLRI IPv6 Next Hop Vendor Testing . . . . . . .  12
     A.1.  Router and Switch Vendors Support and Quality Assurance
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