This object specifies the desired state that a
fcPingEntry should be in:
enable(1) - Attempt to activate the ping as
defined by this entry.
disable(2) - Deactivate the ping as defined by
this entry.
The actual operational state of this test is
indicated by the corresponding instance of
fcPingOperStatus.
When the ping sequence corresponding to this entry
is executing, this object cannot be modified. If this
object is read at such a time, a value of 'enable'
will be returned. When the ping sequence completes,
the value of this object will be made 'disable'
automatically by the agent.