The value of vRtrMaxMcastNumRoutesLogOnly specifies the action to
be taken when the maximum number of multicast routes that can be held
within a given VRF context is reached. If the value is 'true'
the event is logged (a trap is sent) and the learning of
new multicast routes is not disabled. If the value is 'false' the
event is logged and the learning of new routes is disabled.