Addressing Messages in a Two-Tier Network

In one embodiment, a method includes accessing a frame including a baseline header including a recipient address (RA) field, a transmitter address (TA) field, a destination address (DA) field, and a source address (SA) field. The method includes inserting into the frame a mesh header including a mesh destination address (MDA) field and a mesh source address (MSA) field. The MSA field specifies an address of a first edge node of the wireless mesh network, and the MDA field specifies an address of a second edge node of the wireless mesh network. The first edge node is a first transmitter of the frame with the baseline and mesh headers in the wireless mesh network, and the second edge node is a last recipient of the frame with the baseline and mesh headers in the wireless mesh network. The RA, TA, DA, and SA fields precede the MDA and MSA fields in the frame after insertion of the mesh header into the frame.