Aggregation at the physical layer

Aggregation at the physical layer (APL) allows a single IEEE 802.3 media access control (MAC) sublayer to treat a collection of underlying physical layer (PHY) devices as a single logical link. APL creates Ethernet links with bandwidths greater than can be achieved with a single physical link. The primary purpose of APL is to support the next generation Ethernet link speeds of 40 and 100 Gb/s.