Figure 4-1: A Short History of Ethernet standards Ethernet standards are osi Standards Single networks, including LANS, are governed by physical and data link layer standards Layer 1 and Layer 2 standards are almost universally OSI standards Ethernet is no exception The IEEE makes 802.3 standards: Iso ratifies them In practice, when 802.3 finishes standards, vendors begin building compliant products 4-54-5 Figure 4-1: A Short History of Ethernet Standards • Ethernet Standards are OSI Standards – Single networks, including LANs, are governed by physical and data link layer standards – Layer 1 and Layer 2 standards are almost universally OSI standards – Ethernet is no exception – The IEEE makes 802.3 standards; ISO ratifies them – In practice, when 802.3 finishes standards, vendors begin building compliant products