IPv4 NLRI with IPv6 Next Hop Use Cases
draft-mishra-bess-ipv4nlri-ipv6nh-use-cases-07

Document Type Active Internet-Draft (individual)
Authors Gyan Mishra  , Mankamana Mishra  , Jeff Tantsura  , Lili Wang 
Last updated 2020-11-18
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BESS Working Group                                             G. Mishra
Internet-Draft                                              Verizon Inc.
Intended status: Standards Track                               M. Mishra
Expires: May 22, 2021                                      Cisco Systems
                                                             J. Tantsura
                                                            Apstra, Inc.
                                                                 L. Wang
                                                  Juniper Networks, Inc.
                                                       November 18, 2020

                 IPv4 NLRI with IPv6 Next Hop Use Cases
             draft-mishra-bess-ipv4nlri-ipv6nh-use-cases-07

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
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   and may be updated, replaced, or obsoleted by other documents at any

Mishra, et al.            Expires May 22, 2021                  [Page 1]
Internet-Draft      IPv4-NLRI with IPv6-NH Use Cases       November 2020

   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 22, 2021.

Copyright Notice

   Copyright (c) 2020 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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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   6
   3.  Extension of AFI/SAFI Definitions for the IPv4 Address Family   6
   4.  Use of BGP Capability Advertisement . . . . . . . . . . . . .   7
   5.  Operational Improvements with Single IPv6 transport peer  . .   9
   6.  Operational Considerations  . . . . . . . . . . . . . . . . .  10
   7.  Softwire Framework Use Cases of IPv4 NLRI with IPv6 Next Hop   10
     7.1.  VPN-IPv4 over MPLS LDPv6 or SRv6 Core . . . . . . . . . .  10
     7.2.  IPv4 VPN multicast over MPLS LDPv6 or SRv6 Core . . . . .  11
     7.3.  IPv4 Islands over MPLS LDPv6 or SRv6 Core . . . . . . . .  12
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  13
     11.2.  Informative References . . . . . . . . . . . . . . . . .  14
   Appendix A.  IPv4 NLRI IPv6 Next Hop Vendor Testing . . . . . . .  16
     A.1.  Router and Switch Vendors Support and Quality Assurance
           Engineering Lab Results.  . . . . . . . . . . . . . . . .  16
     A.2.  Router and Switch Vendors Interoperability Lab Results. .  16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17
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