O'Reilly logo

Troubleshooting Virtual Private Networks by Mark Lewis

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Troubleshooting L2F

Fast and efficient troubleshooting of L2F is dependent upon a good understanding of L2F protocol operation, L2F configuration, and PPP. Additionally, if remote access clients dial into the NAS, a good knowledge of ISDN and asynchronous modems is also important. In this section, you will see how to apply the end-to-end troubleshooting methodology to L2F.

The flowchart in Figure 2-26 describes the troubleshooting process used with L2F. You can use this flowchart to quickly access the section of the chapter relevant to problems you are experiencing on your network.

Figure 2-26. L2F Troubleshooting Flowchart

Before beginning the troubleshooting process, it is worth briefly re-examining the tunnel establishment ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required