tailieunhanh - Bài giảng Mạng máy tính căn bản: Chương 6 - Phan Vĩnh Thuần

Bài giảng Mạng máy tính căn bản - Chương 6: Nguyên lý cơ bản của Ethernet (Ethernet fundamentals) giúp người học nắm được những kiến thức cơ bản của công nghệ Ethernet, giải thích quy tắc đặt tên của công nghệ Ethernet, xác định mô hình tương tác OSI và Ethernet, tương tác, mô tả quá trình khung Ethernet và cấu trúc khung,. | Chương 6 NGUYÊN LÝ CƠ BẢN CỦA ETHERNET (ETHERNET FUNDAMENTALS) Phan Vĩnh Thuần Overview Ethernet is now the dominant LAN technology in the world. Ethernet is not one technology but a family of LAN technologies and may be best understood by using the OSI reference model. Phan Vĩnh Thuần All LANs must deal with the basic issue of how individual stations (nodes) are named, and Ethernet is no exception. Ethernet specifications support different media, bandwidths, and other Layer 1 and 2 variations. However, the basic frame format and addressing scheme is the same for all varieties of Ethernet. Phan Vĩnh Thuần For multiple stations to access physical media and other networking devices, various media access control strategies have been invented. Understanding how network devices gain access to the network media is essential for understanding and troubleshooting the operation of the entire network. Phan Vĩnh Thuần Students completing this module should be able to: . | Chương 6 NGUYÊN LÝ CƠ BẢN CỦA ETHERNET (ETHERNET FUNDAMENTALS) Phan Vĩnh Thuần Overview Ethernet is now the dominant LAN technology in the world. Ethernet is not one technology but a family of LAN technologies and may be best understood by using the OSI reference model. Phan Vĩnh Thuần All LANs must deal with the basic issue of how individual stations (nodes) are named, and Ethernet is no exception. Ethernet specifications support different media, bandwidths, and other Layer 1 and 2 variations. However, the basic frame format and addressing scheme is the same for all varieties of Ethernet. Phan Vĩnh Thuần For multiple stations to access physical media and other networking devices, various media access control strategies have been invented. Understanding how network devices gain access to the network media is essential for understanding and troubleshooting the operation of the entire network. Phan Vĩnh Thuần Students completing this module should be able to: Describe the basics of Ethernet technology. Explain naming rules of Ethernet technology. Define how Ethernet and the OSI model interact. Describe the Ethernet framing process and frame structure. List Ethernet frame field names and purposes. Phan Vĩnh Thuần Identify the characteristics of CSMA/CD. Describe the key aspects of Ethernet timing, interframe spacing and backoff time after a collision. Define Ethernet errors and collisions. Explain the concept of auto-negotiation in relation to speed and duplex. Phan Vĩnh Thuần . Ethernet Fundamentals . Introduction to Ethernet Most of the traffic on the Internet originates and ends with Ethernet connections. From its beginning in the 1970s, Ethernet has evolved to meet the increasing demand for high speed LANs. When a new media was produced, such as optical fiber, Ethernet adapted to take advantage of the superior bandwidth and low error rate that fiber offers. Now, the same protocol that transported data at 3 Mbps in 1973 is .