This field is used by DC-RSVP to determine whether it should set the Path State Removed flag on a PathErr (and therefore remove corresponding state and generate a PathTear). Each bit of this flags field corresponds to a situation where DC-RSVP may generate a PathErr. Setting a particular bit will result in DC-RSVP removing state, setting the Path State Removed flag and generating a PathTear in that corresponding situation. The possible bit values are as follows. - pathErrPSRSet: DC-RSVP has received a PathErr message with the Path State Removed flag set. - pathErrPSRNotSet: DC-RSVP has received a PathErr message with the Path State Removed flag unset. - ldbCommonRcvd: DC-RSVP has received a negative response to an ATG_LDB_RESERVE_LSP_XC or ATG_LDB_CONNECT_LSP_XC message. - ldbPreempted: DC-RSVP has received a Preemption message from Label Manager. - routingError: DC-RSVP has received a Negative response to an ATG_IPR_QUERY_ROUTE message. - invalidPathMsg: DC-RSVP has received an invalid Path message. - unableToRepairRoute: A route has been removed and DC-RSVP is unable to start local repair. - unableToRepairIf: An interface has been removed and DC-RSVP is unable start local repair. - reachedRetryLimit: An initial Path Message has reached its retry limit. - unableToRefresh: DC-RSVP has been unable to refresh an LSP. - resvErrTurnaround: DC-RSVP has received a ResvErr at the Egress node containing a REROUTING object and this is to be turned round into a PathErr. - incomingIfDown: The incoming MPLS data interface for an LSP has been deactivated. - outgoingIfDown: The outgoing MPLS data interface for an LSP has been deactivated.