event that an issue was discovered with an installed application
or line card, depending on the severity, it may be necessary to
take corrective action.
The system provides
several redundancy and fail-over mechanisms to address issues with application
and line cards in order to minimize system downtime and data loss.
These mechanisms are described below.
The system provides a mechanism to verify the Point-to-Point Protocol
session of a particular subscriber by sending Link Control Protocol (LCP)
packets to the mobile node. This functionality can be extremely useful in
determining the quality of the air link and delays that may occur.