Virtual Extensible LAN VXLAN
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Virtual Extensible LAN VXLAN

A Practical guide to VXLAN solution Part 1.

About the Book

This book is based on my personal blog "The Network Times" ( The first quarter of the book focuses on the Underlay Network solutions used in VXLAN fabric. It starts by explaining the operation of OSPF focusing Dijkstra algorithm and Shortest Path Tree calculation process. Then it discusses the differences between OSPF and IS-IS routing protocols from the Underlay Network perspective. The first part also introduces three BGP based Underlay Network routing solutions with Single-AS solution, Dual-AS solution, and Multi-AS solution. After the Unicast Routing section, this book explains the Multicast Routing solution used for L2VNI specific L2BUM traffic forwarding by introducing the Anycast-RP with PIM and the PIM BiDir solutions. The focus of the second quarter is VXLAN with BGP EVPN Control Plane. This part of the book explains the basic building blocks and configuration needed for both Layer2 and Layer3 services. It also discusses the BGP EVPN Control Plane operation showing how BGP EVPN NLRI information is advertised within a VXLAN fabric and how this information is used in Data Plane. The third quarter discusses of multi-homing solution focusing vPC explaining the following solutions; vPC Multi-homing, vPC and GIR, and vPC Peer-Link as an Underlay Network Backup Path. In addition to vPC, this section explains how to implement Firewall into VXLAN Fabric. The Last quarter of this book starts by explains the standard based EVPN ESI Multi-homing solution. It also discusses the Data Center Interconnect (DCI) solution based on the EVPN Multi-Site architecture. The newest chapter introduces the Tenant Routed Multicast. It starts by explaining a Shared and Source-Specific Multicast distribution trees for Intra-VN and Inter-VN perspective. Then it introduces the operation of BGP IPv4 MVPN focusing two route-types: "Source Active Auto-Discovery" and A "Source Tree Join".

Each chapter includes various configuration and verification examples as well as traffic captures. The only physical device used in labs is my personal computer and the example labs are done by using both Cisco "Virtual Internet Routing Lab" (VIRL) and Emulated Virtual Environment - Next Generation (EVE-NG). 

About the Author

Toni Pasanen
Toni Pasanen

Toni Pasanen. CCIE No. 28158 (RS), Distinguished Engineer at Fujitsu Finland. Toni started his IT carrier in 1998 at Tieto, where he worked as a Service Desk Specialist moving via the LAN team to the Data Center team as a 3rd. Level Network Specialist. Toni joined Teleware (Cisco Learning partner) in 2004, where he spent two years teaching network technologies focusing on routing/switching and MPLS technologies. Toni joined Tieto again in 2006, where he spent the next six years as a Network Architect before joining Fujitsu. Toni works closely with customers in his current role, helping them select the right network solutions from technology and business perspectives. He is also the author of books:

- Virtual Extensible LAN – VXLAN: The Practical Guide to Understand VXLAN Solution - 2019

- LISP with VXLAN in Campus Fabric - 2020

- VXLAN Fabric with BGP EVPN Control-Plane. Design Considerations – 2020

- Object-Based Approach to Cisco ACI: The Logic Behind the Application Centric Infrastructure - 2020

- Cisco SD-WAN: A Practical Guide to Understand the Basics of Cisco Viptela Based SD-WAN Solution- 2021

- Network Virtualization: LISP, OMP, and BGP EVPN Operation and Interaction

- AWS Networking Fundamentals: A Practical Guide to Understand How to Build a Virtual Datacenter into the AWS Cloud

- Azure Networking Fundamentals: A Practical Guide to Understand How to Build a Virtual Datacenter into the Azure Cloud

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