The adminitratively configured hello time in hundredth
of seconds on a port for IEEE MST. The granularity
of this timer is 1 second. An agent may return a badValue
error if a set is attempted to a value which is not a
whole number of seconds. This object value of zero
means the hello time is not specifically configured on
this port and object value of stpxSMSTPortConfigedHelloTime
retrieved for this port will take on the value of
dot1dStpBridgeHelloTime defined in BRIDGE-MIB.