The DeadTime setting for AAA Servers.
If 'cAAAServerDeadTime' of 'cAAASvrExtConfigTable' is zero,
this value is used.
This indicates the length of time in minutes that the
system will mark the server dead when a AAA server does
not respond to an authentication request. During the
interval of the dead time, any authentication request
that comes up would not be sent to that AAA server
that was marked as dead. The default value of 0 means
that the AAA servers will not be marked dead if they
do not respond.