Serial-Backhaul - Cisco Aironet 1572EC Deployment Manual

If the Master AP is a 1570 and the Slave AP is a 1520 or 1550, the Ethernet cable connects the 1572's Ethernet port to any Ethernet
port on the 1552.

Serial-Backhaul

The 1572 Daisy-chaining feature can be used to provide a serial-backhaul mesh. The Master MAP has a preferred parent selected as
the RAP. The slave AP has no preferred parent selected, but is physically connect to the Master AP.
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