Description: Enabling a specific alert allows that alert to be

generated, or displayed at the console.

If chipAlertIndex is set to port-up-down(5) then this object

either overrides the port filter database by enabling or

disabling all port alerts, or if this object is set to filter(3),

then olPortAlertFilter in the olPortTable is consulted for

when generating alerts for each individual port.

Note that only port-up-down(5) alerts may be filtered. Setting

this object to filter(3) for entries other than port-up-down(5)

will return the invalidData object.