This read-only Counter32 counts the number of Bulk Resync messages sent to the PXM from the VISM card since the last reset. An admin cares because bulk resyncs typically reconcile many connections' state at once, so a rising count here suggests larger-scale state divergence requiring wholesale reconciliation rather than per-connection resyncs. For example, an operator seeing this counter spike after a card reload would consider it an expected part of the card resynchronizing its full connection table with the PXM.