This field reports the pause packets received on this PM instance, exposed here as cienaCesPmExtendedTxRxTotalStatsBinRxPausePkts. On this Ciena CES port's PM data, this counts 802.3x PAUSE frames THIS device received on this port, meaning the link partner is the one asking to be throttled — the partner's own ingress buffers were filling up, and this device is expected to slow its transmit rate on this link in response; and this is the running grand-total counter for the extended Tx/Rx PM group, tallied since the bin's own StartTime (in practice since the PM instance was created or last reset), so treat it as a lifetime tally rather than a per-interval number. For example, a link under light load might show a low but steady 23,000 PAUSE frames received for this bin; it's the rate of growth, not the presence of a nonzero number, that would flag a real problem.