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Bài giảng Mạng máy tính căn bản: Chương 8 - Phan Vĩnh Thuần

Bài giảng Mạng máy tính căn bản - Chương 8: Ethernet switching giúp người học xác định cầu nối và chuyển đổi, xác định và mô tả các nội dung địa chỉ bộ nhớ (CAM), xác định độ trễ, mô tả lưu trữ và chuyển tiếp qua chuyển đổi chế độ, xác định va chạm, chương trình phát sóng, lĩnh vực va chạm và các lĩnh vực phát sóng. | Chương 8: ETHERNET SWITCHING Overview Shared Ethernet works extremely well under ideal conditions. When the number of devices trying to access the network is low, the number of collisions stays well within acceptable limits. Phan Vĩnh Thuần when the number of users on the network increases, the increased number of collisions can cause intolerably bad performance. Bridging was developed to help ease performance problems that arose from increased collisions. Switching evolved from bridging to become the key technology in modern Ethernet LANs. Phan Vĩnh Thuần The concept of collision domains and broadcast domains is concerned with the ways that networks can be designed to limit the negative effects of collisions and broadcasts. This module explores the effects of collisions and broadcasts on network traffic and then describes how bridges and routers are used to segment networks for improved performance. Phan Vĩnh Thuần Students completing this module should be able to: . | Chương 8: ETHERNET SWITCHING Overview Shared Ethernet works extremely well under ideal conditions. When the number of devices trying to access the network is low, the number of collisions stays well within acceptable limits. Phan Vĩnh Thuần when the number of users on the network increases, the increased number of collisions can cause intolerably bad performance. Bridging was developed to help ease performance problems that arose from increased collisions. Switching evolved from bridging to become the key technology in modern Ethernet LANs. Phan Vĩnh Thuần The concept of collision domains and broadcast domains is concerned with the ways that networks can be designed to limit the negative effects of collisions and broadcasts. This module explores the effects of collisions and broadcasts on network traffic and then describes how bridges and routers are used to segment networks for improved performance. Phan Vĩnh Thuần Students completing this module should be able to: Define bridging and switching. Define and describe the content-addressable memory (CAM) table. Define latency. Describe store-and forward and cut-through switching modes. Explain Spanning-Tree Protocol (STP). Define collisions, broadcasts, collision domains, and broadcast domains. Identify the Layer 1, 2, and 3 devices used to create collision domains and broadcast domains. Discuss data flow and problems with broadcasts. Explain network segmentation and list the devices used to create segments. Phan Vĩnh Thuần 8.1. Ethernet Switching 8.1.1 Layer 2 bridging As more nodes are added to an Ethernet physical segment, contention for the media increases. Ethernet is a shared media, which means only one node can transmit data at a time. The addition of more nodes increases the demands on the available bandwidth and places additional loads on the media. Phan Vĩnh Thuần By increasing the number of nodes on a single segment, the probability of collisions increases, resulting in more .