response received by the node and the setting of the flush and terminate indicators in its header table 7 shows the action taken by a tandem node when it receives a restore path response from one of its neighbors fig1 illustrates the process performed at the target node once the rpr finally reaches that node when the rpr reaches its designated target node the target node begins processing of the rpr by first determining whether this is the first instance of this rpr that has been received step 1100 if that is not the case a nak is sent with a terminate indicator sent to the originating node step 1105 if this is the first instance of the rpr received the target node determines whether or not the vp specified in the rpr actually terminates at this node step 1110 if the vp does not terminate at this node the target node again sends a nak with a terminate to the originating node step 1105 by sending a nak with a terminate indicator resources allocated along the path are freed by the corresponding tandem nodes if the vp specified in the rpr terminates at this node i e this node is indeed the target node the target node determines whether an rpre exists for the rpr received step 1115 if an rpre already exists for this rpr the existing rpre is updated e g the rpre 39 s lastsequencenumber field is updated step 1120 and the rpre deletion timer is restarted step 1125 if no rpre exists for this rpr in the target node i e if this is the first copy of the.