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Day One: Deploying Optimized Multicast in EVPN/VXLAN


This Day One book provides a quick background on multicast and EVPN technologies and then delves into EVPN BUM forwarding rules within a VLAN, and the problems of ‘flood-ing everywhere’. Various multicast optimization procedures such as Assisted Replication and Selective (SMET) Forwarding are discussed in a staged manner. The authors document the procedures of solving problems in multihoming, the cornerstone of EVPN, and the benefits are illustrated quantitatively with examples to describe the advantages of various optimiza-tions. Filled with network diagrams and configuration examples, Day One: Deploying Optimized Multicast in EVPN/VXLAN is a must read for optimizing multicast in modern network fabrics.

About the Authors

  • Vikram Nagarajan is a Senior Staff Engineer with the Routing Protocols group in Juniper Networks, Bengaluru, India. Having worked for close to 15 years in various VPN and multicast technologies, he recently hopped onto the EVPN bandwagon to partake in solving complex problems in the data center. He was involved in pioneering EVPN multicast solutions from their early days. He likes to call himself “the Multicast Philosopher.”

  • Princy Elizabeth is a Senior Staff Engineer with Juniper Networks, Bengaluru, India. She has over 15 years of experience designing, implementing, and troubleshooting L2/L3 Multicast features. She has worked from “Day One” in the design and implementation of EVPN Multicast on Junos, and this Day One book is an attempt to share that EVPN multicast expertise with readers.

  • Himanshu Agarwal is currently a Staff Engineer in Juniper’s Routing Business Unit in Bengaluru, India. He has 13 years of experience in testing and troubleshooting a wide range of routing and Ethernet switching technologies. Himanshu holds a Bachelors of Technology in Electronics and Communications and a post-graduate diploma in Embedded System Design.

Authors’ Acknowledgments

  • Vikram Nagarajan: I earnestly thank Patrick Ames for bringing out the authors in us by his encouragement, humor, and also the subtle nudge to get us back to the project, just at the right time when we were drifting away. Thanks also to our copyeditor, Nancy Koerbel. I thank my manager Ramesh Kandula for bringing out the best in me in various projects. My gratitude to my co-authors Himanshu Agarwal and Princy Elizabeth in making the overall journey in EVPN multicast pleasant and fulfilling. Thanks to the technical reviewers who were diligent in going over the details in the book and providing questions, thus giving us confidence that the book is indeed purposeful. I am grateful to my colleague and friend Chandra for his profound wisdom and guidance. I would like to thank my wife Vibha, my mother, and my children, Vasudev and Vittal, for motivating me by eagerly asking as to when they can lay hands on the book. Finally, I dedicate this effort to my late father for being my inspiration and a very close friend.

  • Princy Elizabeth: At the outset, I would like to thank my co-authors, Himanshu Agarwal for conceiving this book and Vikram Nagarajan for his infectious enthusiasm and persistence in driving it to completion. I am also grateful to my manager Ramesh Kandula for supporting and encouraging our idea to write this book. A big thank you to all the technical reviewers for taking the time to review and provide their valuable feedback. Many thanks to our Editor in Chief, Patrick Ames, for his guidance, patience and his well-timed nudges that pushed us to give our best, and to our copyeditor, Nancy Koerbel, for her assistance with the development of the book. Finally, I would like to thank my family: my parents - for everything I am today, my husband and mother-in-law - for supporting and encouraging me in everything I do, including writing this book, and my sons, Evan and Johan, for teaching me something new every day.

  • Himanshu Agarwal: I would also like to thank Editor in Chief Patrick Ames, and our copyeditor, Nancy Koerbel, for their assistance and guidance with the book. I would like to sincerely thank my co-authors Vikram and Princy. I would also like to thank my manager, Stanzin Takpa, for encouraging me to work on this book. I would like to thank my wife Archika and son Vihaan for their patience during this journey. I also want to thank my mother and late father for always keeping confidence in me.

Published by Juniper Networks Books

  • Authors: Vikram Nagarajan, Princy Elizabeth, Himanshu Agarwal

  • Editor in Chief: Patrick Ames

  • Copyeditor: Nancy Koerbel

  • Technical Reviewers: Victor Ganjian, Sudarsanan C, Wen Lin, Stefano Anchini, Bob Hayes, Christoph Plum, Michal Styszynski, Aldrin Isaac, Cantemir Olaru, Anoop Kumar Sahu, Ramesh Kandula, Beth Montoya, Barbara Matsumura

  • Printed in the USA by Vervante Corporation.

  • Version History: v1, Feb. 2020

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