Detecting an outage by a first node in layer N of a multi-layer mesh network that is in communication with a root node via the mesh network. After waiting for a sustained outage period that expires, the first node waits for a layer-specific time interval that is based on a topology of the second layer. The first node receives a last gasp from a second node in layer N+1 of the multi-layer mesh network. The last gasp includes an identifier for the second node and an indication of layer N+1. After the layer-specific time interval expires, the first node transmits a consolidated last gasp that includes an identifier for the first node, an indication of layer N, the identifier for the second node, and the indication of layer N+1.