List of the possible route management route status
values. Route management status are received in
transfer-allowed(TFA), transfer-prohibited(TFP),
transfer-restricted(TFR), transfer-cluster-allowed(TCA),
transfer-cluster-prohibited(TCP) and
transfer-cluster-restricted(TFR) management messages.
'unknown' : Status can not be determined.
'allowed' : traffic is allowed.
'restricted' : Traffic is restricted on route.
'prohibited' : Route is prohibited from providing
traffic.
'deleted' : Route has been removed.