Srv6 Network Programming: Ushering in a New Era of IP Networks

SRv6 Network Programming, beginning with the challenges for Internet Protocol version 6 (IPv6) network development, describes the background, roadmap design, and implementation of Segment Routing over IPv6 (SRv6), as well as the application of this technology in traditional and emerging services.

The book begins with the development of IP technologies by focusing on the problems encountered during MPLS and IPv6 network development, giving readers insights into the problems tackled by SRv6 and the value of SRv6. It then goes on to explain SRv6 fundamentals, including SRv6 packet header design, the packet forwarding process, protocol extensions such as Interior Gateway Protocol (IGP), Border Gateway Protocol (BGP), and Path Computation Element Protocol (PCEP) extensions, and how SRv6 supports existing traffic engineering (TE), virtual private networks (VPN), and reliability requirements. Next, SRv6 network deployment is introduced, covering the evolution paths from existing networks to SRv6 networks, SRv6 network deployment processes, involved O&M technologies, and emerging 5G and cloud services supported by SRv6. Bit Index Explicit Replication IPv6 encapsulation (BIERv6), an SRv6 multicast technology, is then introduced as an important supplement to SRv6 unicast technology. The book concludes with a summary of the current status of the SRv6 industry and provides an outlook for new SRv6-based technologies.

SRv6 Network Programming: Ushering in a New Era of IP Networks collects the research results of Huawei SRv6 experts and reflects the latest development direction of SRv6. With rich, clear, practical, and easy-to-understand content, the volume is intended for network planning engineers, technical support engineers and network administrators who need a grasp of the most cutting-edge IP network technology. It is also intended for communications network researchers in scientific research institutions and universities.

Zhenbin Li is the Chief Protocol Expert of Huawei and member of the IETF IAB, responsible for IP protocol research and standards promotion at Huawei.

Zhibo Hu is a Senior Huawei Expert in SR and IGP, responsible for SR and IGP planning and innovation.

Cheng Li is a Huawei Senior Pre-research Engineer and IP standards representative, responsible for Huawei's SRv6 research and standardization.

《SRv6網絡編程》從IPv6網絡開發的挑戰開始，描述了段路由（Segment Routing）在IPv6上的背景、路線圖設計和實現，以及該技術在傳統和新興服務中的應用。

本書首先關注MPLS和IPv6網絡開發中遇到的問題，讓讀者了解SRv6所解決的問題和其價值。然後解釋了SRv6的基礎知識，包括SRv6封包頭設計、封包轉發過程、協議擴展（如內部網關協議、邊界網關協議和路徑計算元協議的擴展）以及SRv6如何支持現有的流量工程、虛擬私有網絡和可靠性要求。接下來介紹了SRv6網絡部署，包括從現有網絡到SRv6網絡的演進路徑、SRv6網絡部署過程、相關的運維技術，以及SRv6支持的新興5G和雲服務。然後介紹了作為SRv6單播技術的重要補充的SRv6多播技術Bit Index Explicit Replication IPv6封裝（BIERv6）。本書最後總結了SRv6行業的現狀，並展望了基於SRv6的新技術。

《SRv6網絡編程：引領IP網絡的新時代》收集了華為SRv6專家的研究成果，反映了SRv6的最新發展方向。本書內容豐富、清晰、實用且易於理解，適用於需要掌握最前沿IP網絡技術的網絡規劃工程師、技術支持工程師和網絡管理員。同時也適用於科研機構和大學的通信網絡研究人員。

作者：
- Zhenbin Li 是華為的首席協議專家，也是IETF IAB的成員，負責華為的IP協議研究和標準推廣。
- Zhibo Hu 是華為的高級SR和IGP專家，負責SR和IGP的規劃和創新。
- Cheng Li 是華為的高級預研工程師和IP標準代表，負責華為的SRv6研究和標準化。