
Operation and Evaluation/Troubleshooting 89
the Monitor section of the output, the status of the registration is displayed, along with the
current FA and CoA.
Finally, if the registration looks good and matches what the Home Agent has for the registration,
you likely have a data plane problem. Check the interface counters and verify that traffic is
coming into an out of the Mobile Node. You often find outbound traffic, but no inbound traffic.
In this case, you likely have a problem with the tunneling. A number of common tunneling
problems and solutions are covered in Chapter 6, “Metro Mobility: Client-Based Mobile IP,”
and Chapter 8, “Deployment Scalability ...