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【计算机】第十六章 TRUNK和VTP
Trunk and VTP 深圳职业技术学院计算机系网络专业 教学目标( Objectives ) 1. Trunk 概念(Trunking Concepts) 2. Trunk 操作(Trunking Operation) 3. VTP模式(VTP Modes) 4. VTP怎样工作(How VTP Works) 5. 配置VTP( Configuring and Verifying VTP ) 6. 配置和验证Trunk(Configuring and Verifying Trunk) Trunk的历史(History of Trunking) Trunk 概念(Trunking Concepts) Trunk 概念(Trunking Concepts) 1.Trunk是两个交换机之间网络信息传递的物理和逻辑的连接 A trunk is a physical and logical connection between two switches across which network traffic travels. 2.一个Trunk就是支持传递多个VLAN信息的点到点的链路 A trunk is a point-to-point link that supports several VLANs. 3.Trunk的目的是保留端口。 The purpose of a trunk is to conserve ports. 4.Trunk将在一个物理链路上绑定多个虚链路,从而在两台交换机之间允许在单一物理链路上传输多个VLAN的信息Trunking will bundle multiple virtual links over one physical link by allowing the traffic for several VLANs to travel over a single cable between the switches. Trunk 操作(Trunking Operation) 1.Trunk机制有两种,帧过滤和帧标记,帧标记被IEEE标准化 Currently two types of trunking mechanisms exist, frame filtering and frame tagging. Frame tagging has been adopted as the standard trunking mechanism by IEEE. 2.帧标记在帧中插入标识符,这样可以更容易管理 Trunking protocols that use a frame tagging mechanism assign an identifier to the frames to make their management easier. 3.在以太网中,帧标记有两种方案 Tagging schemes for Ethernet segments : ISL?– Cisco私有(Cisco proprietary Inter-Switch Link protocol) 802.1Q?– IEEE标准(IEEE standard ) VLANs and Trunking VLAN Trunk 协议(VLAN Trunking Protocol ) 1.VTP是一个通告VLAN信息的信息系统 A messaging system that advertises VLAN configuration information 2.VTP维护整个管理域VLAN信息的一致性 Maintains VLAN configuration consistency throughout a common administrative domain 3.VTP仅在Trunk端口上发送通告 VTP sends advertisements on trunk ports only VTP模式(VTP Modes) VTP怎样工作(How VTP Works) 配置VTP(VTP Configuration) 配置Trunk接口 (Enable trunking ) 配置VTP域名 (VTP domain name ) 指定VTP模式 (VTP mode (server/client/transparent)—VTP server mode is the default) VTP密码(VTP password) 验证VTP配置(Verifying VTP Configurations) 定义Trunk(Defining a Trunk) 验证Trunk(Verifying a Trun
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