This 64-bit counter tracks the cumulative total number of packets received across every remote-access session the device has handled, both currently active and previously terminated ones, since the counter was last reset, typically at boot. It matters as a long-run traffic-volume baseline; an admin graphing this over time gets a sense of overall inbound remote-access traffic growth trends, and using the 64-bit counter specifically avoids the wraparound issues a 32-bit equivalent would suffer on a busy concentrator. A steadily increasing slope in this counter over weeks would indicate organic growth in remote-access usage that might eventually require capacity planning even before session-count limits are approached.