Deployment Guidelines for Edge Peering IPv4-NLRI with IPv6-NH
draft-mishra-bess-deployment-guide-ipv4nlri-ipv6nh-04

Document Type Replaced Internet-Draft (individual)
Authors Gyan Mishra  , Mankamana Mishra  , Jeff Tantsura  , Lili Wang  , Qing Yang  , Adam Simpson  , Shuanglong Chen 
Last updated 2021-04-26
Replaced by draft-ietf-bess-deployment-guide-ipv4nlri-ipv6nh
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-mishra-bess-deployment-guide-ipv4nlri-ipv6nh-04.txt

Abstract

As Enterprises and Service Providers upgrade their brown field or green field MPLS/SR core to an IPv6 transport, Multiprotocol BGP (MP- BGP)now plays an important role in the transition of their Provider (P) core network as well as Provider Edge (PE) Edge network from IPv4 to IPv6. Operators must be able to continue to support IPv4 customers when both the Core and Edge networks are IPv6-Only. This document details an important External BGP (eBGP) PE-CE Edge IPv6-Only peering design that leverages the MP-BGP capability exchange by using IPv6 peering as pure transport, allowing both IPv4 Network Layer Reachability Information (NLRI) and IPv6 Network Layer Reachability Information (NLRI)to be carried over the same (Border Gateway Protocol) BGP TCP session. The design change provides the same Dual Stacking functionality that exists today with separate IPv4 and IPv6 BGP sessions as we have today. With this design change from a control plane perspective a single IPv6 is required for both IPv4 and IPv6 routing updates and from a data plane forwarindg perspective an IPv6 address need only be configured on the PE and CE interface for both IPv4 and IPv6 packet forwarding. This document provides a much needed solution for Internet Exchange Point (IXP) that are facing IPv4 address depletion at large peering points. With this design, IXP can now deploy PE-CE IPv6-Only eBGP Edge peering design to eliminate IPv4 provisioning at the Edge. This core and edge IPv6-Only peering design paradigm change can apply to any eBGP peering, public internet or private, which can be either Core networks, Data Center networks, Access networks or can be any eBGP peering scenario. This document provides interoperability test cases for the IPv6-Only peering design as well as test results between five major vendors stakeholders in the routing and switching indusrty, Cisco, Juniper, Arista, Nokia and Huawei. With the test results provided for the IPv6-Only Edge peering design, the goal is that all other vendors around the world that have not been tested will begin to adopt and implement this new Best Current Practice for eBGP IPv6-Only Edge peering. As this issue with IXP IPv4 address depletion is a critical issue around the world, it is imperative for an immediate solution that can be implemented quickly. This Best Current Practice IPv6-only eBGP peering design specification will help proliferate IPv6-Only deployments at the eBGP Edge network peering points to starting immediately at a minimum with operators around the world using Cisco, Juniper, Arista, Nokia and Huawei. As other vendors start to implement this Best Current Practice, the IXP IPv4 address depletion gap will eventually be eliminated.

Authors

Gyan Mishra (gyan.s.mishra@verizon.com)
Mankamana Mishra (mankamis@cisco.com)
Jeff Tantsura (jefftant.ietf@gmail.com)
Lili Wang (liliw@juniper.net)
Qing Yang (qyang@arista.com)
Adam Simpson (adam.1.simpson@nokia.com)
Shuanglong Chen (chenshuanglong@huawei.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)