What physical Ethernet topologies are no longer popular?
There are a number of physical networking components specified in the IEEE 802.3 specification, but many of those early physical networking components are not used in most modern Ethernet networks. However, there may be instances where an existing legacy network still exists which uses these older components. Since these older pieces of equipment are still part of the 802.3 specification, there are no technical reasons why an Ethernet network would not operate properly with these components. The two most popular older Ethernet technologies are 10BASE5 and 10BASE2. • 10BASE5 10BASE5 is the original Ethernet backbone, and is occasionally referred to as thicknet or thick Ethernet because of the thick 50 ohm coax that was used as the physical medium. 10BASE5 is a bus topology that uses transceiver cables to attach stations to the central 10BASE5 cable. • Maximum segment length: 500 meters • Maximum number of segments connected with repeaters: 5 (2500 meters) • Maximum attachments per segme
