This TimeStamp reports the sysUpTime value at the most recent creation, modification, or deletion of any row in the t11FcRouteTable for the same switch and Fibre Channel fabric, and reads 0 if no change has occurred since the management system last restarted. An admin polls this to quickly detect whether the FC routing table for a fabric has changed, without walking the whole table on every poll. For example, a value that jumps forward between polls tells the admin a route was added or removed on that fabric and a table re-read is worthwhile.