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The resulting standards are named 2.5GBASE-T and 5GBASE-T. [ 1 ] [ 2 ] [ 3 ] NBASE-T refers to Ethernet equipment that supports speeds of at least 2.5 Gbit/s and sometimes 5 or 10 Gbit/s, and that can automatically use training to operate at the best speed supported by the cable quality. [ 4 ]
Small Form-factor Pluggable connected to a pair of fiber-optic cables. Small Form-factor Pluggable (SFP) is a compact, hot-pluggable network interface module format used for both telecommunication and data communications applications.
5GBASE-T: 100 m of Cat 6 2.5GBASE-T1: 802.3ch-2020 (149) use a single, bi-directional twisted pair in full duplex mode only, intended for automotive and industrial applications 5GBASE-T1 Fiber-optical cable 2.5GBASE-AU: 802.3cz-2023 (166) undefined: up to 40 m of OM3 for automotive 5GBASE-AU: up to 40 m of OM3 for automotive Other 2.5GBASE-KX
IEEE 802.3 is a working group and a collection of standards defining the physical layer and data link layer's media access control (MAC) of wired Ethernet.The standards are produced by the working group of the Institute of Electrical and Electronics Engineers (IEEE).
The physical coding sublayer (PCS) is a networking protocol sublayer in the Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet standards. It resides at the top of the physical layer (PHY), and provides an interface between the physical medium attachment (PMA) sublayer and the media-independent interface (MII).
Meaning Primary Applicability [4] Normative Reference ACK: Acknowledgement Transport and other layers TCP/IP, for example. RFC 793 ACL: Access control list Security, application layer Access control list, Cisco overview: ADSL: Asymmetric digital subscriber line Telecom ITU-T G.992.5 Annex M, for example AES: Advanced Encryption Standard Security
The services and protocols specified in IEEE 802 map to the lower two layers (data link and physical) of the seven-layer Open Systems Interconnection (OSI) networking reference model. IEEE 802 divides the OSI data link layer into two sub-layers: logical link control (LLC) and medium access control (MAC), as follows:
The line encoding used by 10GBASE-T is the basis for the newer and slower 2.5GBASE-T and 5GBASE-T standard, implementing a 2.5 or 5.0 Gbit/s connection over existing category 5e or 6 cabling. [51] Cables that will not function reliably with 10GBASE-T may successfully operate with 2.5GBASE-T or 5GBASE-T if supported by both ends.