IPv4 NLRI with IPv6 Next Hop Use Cases
draft-mishra-bess-ipv4nlri-ipv6nh-use-cases-08
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-
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Internet-Drafts are draft documents valid for a maximum of six months
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on August 26, 2021.
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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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