Fragmentation Problems

Summary

This chapter showed you the basics of troubleshooting IPsec VPNs on Cisco routers. It is by no means an all-encompassing coverage of troubleshooting VPN problems; however, I've tried to discuss some of the most common problems you'll experience and how to pinpoint those problems using show and debug commands on Cisco routers.

Next up is Part IV, "PIX Firewalls," where I show you how to set up VPN features on Cisco PIX and ASA appliances.