and VTP M Cisco.com 深圳职业技术学院计算机系网络专业 2006,Shenzhen Polytechnic,All rights reserved
© 2006, Shenzhen Polytechnic, All rights reserved. 1 Trunk and VTP 深圳职业技术学院计算机系网络专业
教学目标(Objectives Cisco.com 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) 2006,Shenzhen Polytechnic.Allrights reserved
© 2006, Shenzhen Polytechnic. All rights reserved. 2 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) wwwwcm Cisco.com Trunk Link Shared Trunk MUX MUX Central Office George Street Co Broadway Street CO VLAN1 VLAN1 VLAN1 VLAN2 VLAN3 Backbone VLAN2 VLAN3 VLAN3 VLAN2
© 2006, Shenzhen Polytechnic. All rights reserved. 3 Trunk的历史（History of Trunking）
Trunk概念(Trunking Concepts) Cisco.com VLAN1 VLAN1 VLAN 1 VLAN 2 Sb VLAN2 VLAN2 TRUNK VLAN 1 VLAN 1 and VLAN 2 06,ShenzhenPolytechnic.Allrightsreserved
© 2006, Shenzhen Polytechnic. All rights reserved. 4 Trunk 概念（Trunking Concepts）
Trunk概念(Trunking Concepts) d石 Cisco.com 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.Truk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. 2006,Shenzhen
© 2006, Shenzhen Polytechnic. All rights reserved. 5 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) wwwccm Cisco.com 1.Trunk机制有两种，帧过滤和帧标记，帧标记被EEE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 (Cisco proprietary Inter-Switch Link protocol) 802.1Q-IEEE标准(IEEE standard)
© 2006, Shenzhen Polytechnic. All rights reserved. 6 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 Cisco.com ●LAN1 ■VLAN2 VLAN 3 Trunk提供了在一个网络内的交换机之间高效的通信 Trunking provides effective communication between switches in a network. 2006.Shenzhen Polytechnic.All rights reserved
© 2006, Shenzhen Polytechnic. All rights reserved. 7 VLANs and Trunking Trunk 提供了在一个网络内的交换机之间高效的通信
VLAN Trunk协议 (VLAN Trunking Protocol AW厦 Cisco.com ·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Trunki端口上发送通告 VTP sends advertisements on trunk ports only VTP Domain“szpt' 3.同步到最新的VLAN信息(Sync to the latestvlan information) 有新VLAN加入(“newvlan added)
© 2006, Shenzhen Polytechnic. All rights reserved. 8 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 1.有新VLAN加入（“new vlan added”） 3.同步到最新的VLAN信息（Sync to the latest vlan information） 2 VTP Domain “szpt
VTP模式(VTP Modes) wwwwcmm Cisco.com ·创建(Create vlans) ·修改(Modify vlans) ·删除(Delete vlans) Server ·发送或转发通告( Sends/forwards advertisements) ·同步(Synchronize) ·保存(Saved in NVRAM) ·转发通告(Forwards advertisements) 创建(Create vlans) ·同步(Synchronize) Client 修改(Modify vlans) ·不包存(Not saved in Transparent 删除(Delete vlans) NVRAM) 转发通告(forwards advertisements) 不同步(does not Synchronize) 保存(Saved in NVRAM)
© 2006, Shenzhen Polytechnic. All rights reserved. 9 VTP模式（VTP Modes） Transparent • 转发通告（Forwards advertisements） • 同步（Synchronize） • 不包存（Not saved in NVRAM） • 创建（Create vlans） • 修改（Modify vlans） • 删除（Delete vlans） • 发送或转发通告（ Sends/forwards advertisements） • 同步（Synchronize） • 保存（Saved in NVRAM） 创建（Create vlans） 修改（Modify vlans） 删除（Delete vlans） 转发通告（forwards advertisements） 不同步（does not Synchronize） 保存（Saved in NVRAM）
VTP怎样工作(How VTP Works) Cisco.com 。VTP通告以组播帧发送 VTP advertisements are sent as multicast frames ·VTPserver和client同步到最新的配置版本号 VTP servers and clients synchronized to latest revision number ·VTP通告在变化时，或者每5分钟发送 VTP advertisementare sent every five minutes or when there is a change 2006,Shenzhen Polytechnic.All rights reserved
© 2006, Shenzhen Polytechnic. All rights reserved. 10 VTP怎样工作（How VTP Works） • VTP通告以组播帧发送 • VTP advertisements are sent as multicast frames • VTPserver和client同步到最新的配置版本号 • VTP servers and clients synchronized to latest revision number • VTP通告在变化时，或者每5分钟发送 • VTP advertisement are sent every five minutes or when there is a change