This read-only INTEGER reports whether the last vPC peer-keepalive message reception attempt succeeded or failed. Administrators use it to assess the receiving side of the keepalive exchange independently from the sending side, helping isolate whether a keepalive problem is on the transmit or receive path. For example, a failure reported here while send status shows success would point the admin toward a problem on the peer's transmission or the return path rather than the local switch's own sending capability.