1. MSR6 Introduction [EN]

Publication URL: PDF - MSR6 Introduction

2. BIERv6 Introduction [EN]

Publication URL: PDF - BIERv6 Introduction

3. BIERv6 eBook [EN]

Publication URL: https://support.huawei.com/enterprise/en/doc/EDOC1100201299

4. BIERv6 eBook [CN]

Publication URL: https://support.huawei.com/enterprise/zh/doc/EDOC11001950879

5. MSR6 Presentation in MPLS Congress 2023 [EN]

Publication URL: https://github.com/IPv6Plus/IPv6Plus.github.io-resources/blob/master/MSR6/Multicast_Source_Routing_over_IPv6.pdf


Part 1: MSR6 / BIERv6

1. MSR6 Design Consideration

Publication URL: https://datatracker.ietf.org/doc/html/draft-cheng-spring-ipv6-msr-design-consideration


This document discusses the design consideration of IPv6 source routing multicast solution, including MSR6 Deployment Modes, Requirements and the relationship with existing IETF work.

2. MSR6 Problem Satement

Publication URL: https://datatracker.ietf.org/doc/draft-liu-msr6-problem-statement/


This document analyses the gaps of the existing IPv6 multicast solutions under discussion in IETF based on the requirements.

3. MSR6 Gap Analysis

Publication URL: https://datatracker.ietf.org/doc/html/draft-li-spring-ipv6-msr-gap-analysis


This document analyses the gaps of the existing IPv6 multicast solutions under discussion in IETF based on the requirements..

4. RGB (Replication through Global Bitstring) Segment for MSR6

Publication URL: https://datatracker.ietf.org/doc/html/draft-lx-msr6-rgb-segment


This document introduces the RGB (Replication through Global Bitstring) Segment and the corresponding encapsulation for Multicast Source Routing over IPv6.

5. Source Segment for MSR6

Publication URL: https://datatracker.ietf.org/doc/html/draft-xl-msr6-source-segment


This document defines the general concept of source segment which is used as the IPv6 source address in an IPv6 packet. Source segment for multicast service is introduced in this document.

6. MSR6 Traffic Engineering

Publication URL: https://datatracker.ietf.org/doc/html/draft-geng-msr6-traffic-engineering


This document defines 2 new types of segment: End.RL and End.RL.X, and the corresponding packet processing procedures over the IPv6 data plane for the MSR6(Multicast Source Routing over IPv6) TE solutions.

7. Stateless SRv6 Point-to-Multipoint Path

Publication URL: https://datatracker.ietf.org/doc/html/draft-chen-pim-srv6-p2mp-path


This document describes a solution for a SRv6 Point-to-Multipoint (P2MP) Path/Tree to deliver the traffic from the ingress of the path to the multiple egresses/leaves of the path in a SR domain. There is no state stored in the core of the network for a SR P2MP path like a SR Point-to-Point (P2P) path in this solution.

8. MSR6 Side Meeting @IETF112

Publication URL: https://github.com/XuesongGeng/IETF-112-MSR6-Side-Meeting


MSR6 Side Meeting was to introduce the requirement for Multicast Source Routing over IPv6, including MSR6 BE, MSR6 TE, MSR6 Network Slicing and the corresponding potential solutions.

9. MSR6 BOF @IETF114

Publication URL: https://datatracker.ietf.org/doc/bofreq-liu-multicast-source-routing-over-ipv6msr6/


MSR6 BOF focuses on source routing multicast based on native IPv6 (IPv6 and IPv6 extension headers), including Best Effort and Traffic Engineering solutions, to decouple multicast forwarding from per-flow state at intermediate nodes.

Part 2: BIER

1. Tree Engineering for Bit Index Explicit Replication (BIER-TE)

Publication URL: https://datatracker.ietf.org/doc/html/draft-ietf-bier-te-arch


This document introduces per-packet stateless strict and loose path steered replication and forwarding for Bit Index Explicit Replication packets (RFC8279). This is called BIER Tree Engineering (BIER-TE).

2. BIER Fast ReRoute

Publication URL: https://datatracker.ietf.org/doc/html/draft-chen-bier-frr


This document describes a mechanism for fast re-route (FRR) protection against the failure of a node or link in the core of a “Bit Index Explicit Replication” (BIER) domain.

Part 3: SR Multicast

1. SR Replication Segment for Multi-point Service Delivery

Publication URL: https://datatracker.ietf.org/doc/html/draft-ietf-spring-sr-replication-segment


This document describes the SR Replication segment for Multi-point service delivery. A SR Replication segment allows a packet to be replicated from a Replication Node to downstream nodes.

2. Segment Routing Point-to-Multipoint Policy

Publication URL: https://datatracker.ietf.org/doc/html/draft-ietf-pim-sr-p2mp-policy


This document describes an architecture to construct a Point-to-Multipoint (P2MP) tree to deliver Multi-point services in a Segment Routing domain. A SR P2MP tree is constructed by stitching a set of Replication segments together. A SR Point-to-Multipoint (SR P2MP) Policy is used to define and instantiate a P2MP tree which is computed by a PCE.

3. Multicast and Ethernet VPN with Segment Routing Point-to-Multipoint Trees

Publication URL: https://datatracker.ietf.org/doc/html/draft-ietf-bess-mvpn-evpn-sr-p2mp


A Point-to-Multipoint (P2MP) Tree in a Segment Routing domain efficiently carries traffic from a Root to a set of Leaves. This document describes extensions to BGP encodings and procedures for P2MP trees used in BGP/MPLS IP VPNs and Ethernet VPNs.

4. YANG Data Model for p2mp sr policy

Publication URL: https://datatracker.ietf.org/doc/html/draft-hb-spring-sr-p2mp-policy-yang


This document defines a YANG data model for SR P2MP Policy Configuration and operation.

5. PCEP extensions for p2mp sr policy

Publication URL: https://datatracker.ietf.org/doc/html/draft-ietf-pce-sr-p2mp-policy


SR P2MP policies are set of policies that enable architecture for P2MP service delivery. This document specifies extensions to the Path Computation Element Communication Protocol (PCEP) that allow a stateful PCE to compute and initiate P2MP paths from a Root to a set of Leaves.

6. Advertising p2mp policies in BGP

Publication URL: https://datatracker.ietf.org/doc/html/draft-hb-idr-sr-p2mp-policy


This document specifies a new BGP SAFI with a new NLRI in order to advertise P2MP policy from a controller to a set of nodes.

7. P2MP Policy Ping

Publication URL: https://datatracker.ietf.org/doc/html/draft-hb-pim-p2mp-policy-ping


This document describes a simple and efficient mechanism that can be used to detect data plane failures in P2MP Policy Candidate Paths (CPs) and Path Instances (PIs).

Part 4: PCECC for Multicast

1. PCECC for Multicast

Publication URL: https://datatracker.ietf.org/doc/html/draft-dhody-pce-pcep-extension-pce-controller-p2mp


This document specifies the procedures and Path Computation Element Communication Protocol (PCEP) extensions for using the PCE as the central controller for provisioning labels along the path of the static P2MP LSP.


1. Technical requirement of BIER IPv6


This is the standard project in CCSA which defines the BIERv6 technology and procedure. The document has been approved by WG.


1. BIERv6 Test Report White Paper [EN]

Publication URL: PDF - White Paper


China Unicom Beijing branch, in conjunction with Huawei, has tested BIERv6 multicast solution with the IPTV service in existing metro network. This test is an end-to-end verification of the actual IPTV video service, proving that BIERv6 solution has the advantages of easy deployment, on-demand access, high reliability and intelligent operation and maintenance. This white paper covers the topology, network device and the features that have been tested.



1. China Unicom Beijing Branch has developed BIERv6 trial

Publication URL: https://m.c114.com.cn/w241-1153570.html


In February 2021, China Unicom successfully validated BIERv6 solution over its Beijing Metro network.

2. China Mobile Gansu Branch has developed G-BIER trial

Publication URL: https://m.c114.com.cn/w241-1181956.html


In November 2021, China Mobile successfully validated G-BIER solution in Gansu.

3. China Unicom Achieve the First Commercial Use of BIERv6 in China

Publication URL: https://news.sina.cn/sx/2022-05-16/detail-imcwipik0144808.d.html


In May 2022, Guangdong Unicom Partnered with Huawei to Achieve the First Commercial Use of BIERv6 in China.