Disclosed are various embodiments for network monitoring. A processor circuit having a processor and a memory is employed. A listing of components of a network is stored in the memory, the listing including a plurality of endpoints and a plurality of nodes. One of the endpoints includes the processor circuit. A monitoring application is stored in the memory and executable by the processor. The monitoring application is configured to maintain in the memory an indication of an operational status of each of the nodes derived from a plurality of status requests transmitted between respective pairs of the endpoints.