Node Usage Information Maintenance

With v6.1, node usage date and time stamps are maintained in a new US record in the Netmap. There is one US record for each Adjacent Node (NN) record. Note that there is no US record for the Local Node entry, but there is one for the Adjacent Node entry used for PNODE=SNODE. Connect:Direct maintains the date and time for the following events in the life of a Netmap Adjacent Node entry.
Event Effect of Event on US Record and its Date and Time fields

US Record

Node Added Fields Node Updated Fields Node Last Used as PNODE fields Node Last Used as SNODE fields

Netmap Loader Program

DGADNTLD

LOAD Created Set to program execution date and time Set to binary zeroes Set from parameter PNODE.LAST.USED if present; otherwise set to binary zeroes. Set from parameter SNODE.LAST.USED if present; otherwise set to binary zeroes.
UNLOAD   Not unloaded Not unloaded Unloaded as parameter PNODE.LAST.USED if the US record exists and has non-zero date and time in the PNODE Last Used fields. Unloaded as parameter SNODE.LAST.USED if the US record exists and has non-zero date and time in the SNODE Last Used fields

Netmap Update Program

DGADUPNT

$DELETE Deleted        
$INSERT Created Set to program execution date and time      
$REPLACE Deleted then created Set to program execution date and time      
$UPDATE   Set to program execution date and time      
Connection Adjacent Node is the PNODE       Set to connection date and time  
Adjacent Node is the SNODE         Set to connection date and time
PNODE=SNODE       Set to connection date and time Set to connection date and time