Troubleshooting Virtual Private Networks (VPN)

Troubleshooting Virtual Private Networks (VPN)

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Master advanced troubleshooting techniques for IPSec, MPLS Layer-3, MPLS Layer-2 (AToM), L2TPv3, L2TPv2, PPTP, and L2F VPNsLearn the step-by-step, end-to-end methodology essential for troubleshooting virtual private networks (VPNs) Gain the in-depth knowledge necessary for fast and efficient troubleshooting of IPSec, MPLS Layer-3, MPLS Layer-2 (AToM), L2TPv3, L2TPv2, PPTP, and L2F VPNs Master advanced troubleshooting tools and techniques for all applicable VPN types Debug and fix IPSec site-to-site and remote access VPN issues, such as IKE (ISAKMP) phase 1 and phase 2 negotiation failure, ESP and AH traffic drops, certificate enrollment failures, and maximum transmission unit (MTU) problems Locate and resolve MPLS Layer-3 VPN problems, such as those involving route exchange and label switched path (LSP) failure, MPLS VPN over traffic engineering tunnels, and Multicast VPNs (MVPN) Discover solutions for issues in AToM and L2TPv3-based Layer-2 VPNs, including pseudowire setup failures, attachment circuit problems, and MTU issues Obtain answers for L2TPv2, PPTP, and L2F control connection establishment, session setup, PPP negotiation, and VPN performance issues Refer to specially designed flowcharts to identify issues and find solutions fast Consolidate VPN troubleshooting knowledge through bonus hands-on labs Read and understand detailed analysis of all relevant VPN show and debug command outputTroubleshooting Virtual Private Networks presents a systematic troubleshooting methodology for network engineers, administrators, and architects tasked with managing and deploying Cisco IOS VPNs. With eight self-contained chapters designed to facilitate rapid and straightforward troubleshooting, this book provides detailed information on addressing all common and not-so-common issues with IPSec VPNs, MPLS Layer-3 VPNs, Any Transport over MPLS (AToM)-based Layer-2 VPNs, L2TP Version 3 (L2TPv3)-based Layer-2 VPNs, L2TP Version 2 (L2TPv2) VPNs, PPTP VPNs, and L2F VPNs. This book not only shows you how to correct problems but also how to avoid them in the first place with expert VPN configuration guidance and optimization tips.Each chapter in Troubleshooting Virtual Private Networks includes a step-by-step, end-to-end troubleshooting approach to a different VPN technology. In-depth technical discussions and configuration reviews orient you to the VPN technology and get you ready to work. To help you access the answers you need, you'll find flowcharts in each chapter that provide a roadmap for rapid issue resolution. Solutions to complex or unusual issues can be found in case studies at the end of each chapter, along with review questions that test your knowledge. Bonus troubleshooting labs are also included to help you consolidate the skills learned throughout the book.Whether you are looking to update or hone your skills, Troubleshooting Virtual Private Networks is your first and last reference for mastering advanced VPN troubleshooting.This book is part of the Networking Technology Series from Cisco Press? which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful more

Product details

  • Hardback | 840 pages
  • 196 x 228 x 50mm | 1,601.2g
  • Pearson Education (US)
  • Cisco Press
  • Indianapolis, United States
  • English
  • 1587051044
  • 9781587051043

Table of contents

Introduction. Basic Troubleshooting Methodology. reparatory Steps: Baselining Your Network. What to Do When Problems Occur. Open Systems Interconnection Model. End-to-End, Bottom-Up (or Top-Down) Troubleshooting. Troubleshooting Tools. Summary. 1. Troubleshooting Layer Two Forwarding Protocol VPNs. Technical Overview of L2F. Configuring L2F. Troubleshooting L2F. Case Studies. Additional Commands for Troubleshooting. Error Messages. show and debug Command Summary. Review Questions. Troubleshooting Practice Labs. 2. Troubleshooting Point-to-Point Tunneling Protocol VPNs. Technical Overview of PPTP. Configuring PPTP. Troubleshooting PPTP. Case Studies. Additional Troubleshooting Commands. show and debug Command Summary. Review Questions. 3. Troubleshooting the Layer 2 Tunneling Protocol Version 2 VPNs. L2TPv2 Technical Overview. Case Studies. Additional L2TP Troubleshooting Commands. Error Messages. show and debug Command Summary. Review Questions. L2TP Troubleshooting Practice Labs. 4. Troubleshooting L2TPv3 Based VPNs. Technical Overview of L2TPv3. Configuring L2TPv3. Troubleshooting L2TPv3. Other Commands. Command Summary. Review Questions. 5. Troubleshooting Multiprotocol Label Switching Layer 3 VPNs. Technical Overview. Configuring MPLS VPNs. Configuring MVPNs. Configuring TE Tunnels to Carry MPLS VPN Traffic. Troubleshooting MPLS VPNs. Case Studies. Additional Troubleshooting Commands. show and debug Command Summary. Review Questions. MPLS VPN Troubleshooting Practice Labs. 6. Troubleshooting Any Transport over MPLS Based VPNs. Technical Overview of AtoM. Configuring AtoM. Troubleshooting AtoM. Other AToM Troubleshooting Commands. Troubleshooting AToM: Command Summary. Review Questions. 7.Troubleshooting IPSec VPNs. Technical Overview of IPSec. Configuring IPSec VPNs. Troubleshooting IPSec VPNs. Case Studies. Additional Troubleshooting Commands. show and debug Command Summary. Review Questions. Practice Labs. Appendix A: view Questions and Answers. Chapters 2-8 Review Questions & Answers. Appendix B: Lab Instructions and Solutions. Setting Up Your Routers and Loading the Configuration Files. Chapter 2: L2F Troubleshooting Lab Solutions. Chapter 4: L2TPv2 Troubleshooting Lab Solutions. Chapter 6: MPLS Layer 3 VPN Troubleshooting Lab Solutions. Chapter 8: IPSec Troubleshooting Lab Solutions. Indexshow more

About Mark Lewis

Mark Lewis, CCIE No. 6280, is technical director of MJL Network Solutions (, a leading provider of internetworking solutions that focuses on helping service provider and enterprise customers to implement cutting edge technologies, deploy security solutions, and optimize their networks, as well as providing them with advanced training. Mark specializes in VPN technologies and has many years of experience designing, implementing, and troubleshooting IP networks. Mark is also a certified Cisco Systems more

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