December 2005
Intermediate to advanced
1032 pages
29h 12m
English
Content preview from The Complete Cisco VPN Configuration Guide
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Chapter 19. Troubleshooting Router Connections
This chapter will focus on how to troubleshoot IPsec sessions on Cisco routers. I’ve broken the chapter into two areas on troubleshooting: ISAKMP/IKE Phase 1 and Phase 2 issues. I’ll show you how ISAKMP/IKE Phase 1 and 2 connections are built using debug commands and what to look for when there is a problem with either of these phases. I’ll also discuss a new feature in the IOS called VPN Monitoring, which allows you to determine problems with IPsec sessions more easily. The last part of the chapter will deal with one main issue with any type of VPN implementation: fragmentation.
Note
This chapter by no means covers all possible problems you’ll experience with IPsec sessions on Cisco routers. However, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.