IEEE 802.3bz

The Ethernet standard802.3bz, known as NBase-T before standardization, specifies the parameters of the media access method, the physical layer and the management for 2.5GbE with a data rate of 2.5 Gbit/s over Cat 5e UTP cables and 5GbE with 5 Gbit/s over Cat 6, in each case over distances of 100 meters.

The 802.3bz standard achieves five times the data throughput ofGigabit Ethernet over Cat 5e and Cat 6 TP cables, which have been in use for years. PCI Express can be used as Ethernet interfaces. The technologies used correspond to those of 10GBase-T with their coding and other parameters, only the data rate has been downscaled. For 2.5GBase-T to 1/4 and for 5GBase-T to 1/2.

The 802.3bz standard allows access points ofWLANs with high data rates of over 1 Gbit/s, such as 802.11ac, to be connected via an Ethernet cable to 2.5GBase-T or 5GBase-T. Currently, corresponding access points are connected via multiple Ethernet ports and 1000Base-T. In addition, 802.3bz supports power transmission via Power over Ethernet( PoE), unlike 10 Gigabit Ethernet.