This Counter64 counts octets belonging to frames that were tagged DE for exceeding CIR but staying within the Be allowance, the byte-volume counterpart to circuitInFramesTagged. This gives an admin the actual data volume, not just frame count, of traffic riding in this circuit's excess-but-tolerated zone, useful for deciding whether to raise the committed rate (circuitFwdTDParam1) to better match real usage. For example, if this counter shows a consistently large volume of tagged octets every polling interval, it suggests the circuit's real average usage is regularly exceeding its configured CIR and a permanent rate increase may be warranted rather than continuing to rely on the burst allowance.