网络互联基础 Basicework Interconnection mmmmm Cisco.com 深圳职业技术学院计算机系网络专业 2006,Shenzhen Polytechnic,All rightsreserved
© 2006, Shenzhen Polytechnic, All rights reserved. 1 网络互联基础 Basic of Network Interconnection 深圳职业技术学院计算机系网络专业
教学目标（Objectives ) Cisco.com 1.思科认证(Cisco Certifications) 2.OSI参考模型与TCP/IP参考模型 (OSI RM and TCP/IP RM) 3.数据封装（Data Encapsulation) 4.广域网设备及其功能 (Function of WAN Devices 5.广域网物理层(WAN Physical Layer) 6.广域网数据链路层(WAN Data Link Layer)
© 2006, Shenzhen Polytechnic. All rights reserved. 2 教学目标（ Objectives ） 1. 思科认证（ Cisco Certifications ） 2. OSI参考模型与TCP/IP参考模型 （OSI RM and TCP/IP RM） 3. 数据封装（ Data Encapsulation ） 4. 广域网设备及其功能 （Function of WAN Devices ） 5. 广域网物理层（ WAN Physical Layer ） 6. 广域网数据链路层（ WAN Data Link Layer ）
思科认证(Cisco Certifications) wm Cisco.com CCIE(Cisco Certified Internetwork Expert) -Routing and Switching -Security Expert. Communications and Services CCNP(Cisco Certified Network Professional) -Routing and Switching Support CCIPTM(Cisco Certified Internetwork Professional) Professional. -Communications and Services CCNA*(Cisco Certified Network Associate) -Routing and Switching Support Associate 06,ShenzhenPolytechnic.All
© 2006, Shenzhen Polytechnic. All rights reserved. 3 思科认证（ Cisco Certifications ）
思科常用图标(Cisco Icons and Symbols) Cisco.com ATM Bridge File Switch Network Server Cloud Router Hub Building Switch Modem Laptop Comm Server Home Office Phone Phones ISDN Customer Switch 2006,ShenzhenPolytechnic.All rights reserved
© 2006, Shenzhen Polytechnic. All rights reserved. 4 思科常用图标（Cisco Icons and Symbols）
计算机网络的发展(Evolution of Networking) 厦 Cisco.com
© 2006, Shenzhen Polytechnic. All rights reserved. 5 计算机网络的发展（Evolution of Networking）
OSI与TCP/IP参考模型(OSI RM and TCP/IP RM) AIIIET Cisco.com Comparing TCP/IP with OSI TCP/IP Model OSI Model Application Application Presentation Application Protocols Session Layers Transport Transport Internet Network Data Flow Network Data Link Access Networks Layers Physical
© 2006, Shenzhen Polytechnic. All rights reserved. 6 OSI与TCP/IP参考模型（OSI RM and TCP/IP RM）
OSI模型的好处(Benefit of OSI Model) Cisco.com 7 Application 6 Presentation 5 Session 4 Transport 3 Network 2 Data Link 1 Physical Benefits of the OSI Model OS1模型的好处 ·Reduces complexity 减少复杂性 Standardizes interfaces 标准化接口 .Facilitates modular engineering 便于慎块化设计 Ensures interoperable technology 确保技术兼容性 Accelerates evolution 加速发展 Simplifies teaching and learning 箭化教与学 006,ShenzhenPolytechnic.All rights reserved
© 2006, Shenzhen Polytechnic. All rights reserved. 7 OSI模型的好处（Benefit of OSI Model ） OSI模型的好处 减少复杂性 标准化接口 便于模块化设计 确保技术兼容性 加速发展 简化教与学
OSl物理层(OSI Physical Layer) Cisco.com 7 Application 6 Presentation 5 Session 4 Transport 3 Network 2 Data Link Physical Binary Transmission 二进制传愉 ©2006，shn All rights reserved
© 2006, Shenzhen Polytechnic. All rights reserved. 8 OSI物理层（OSI Physical Layer）
OSl数据链路层(OSI Data Link Layer) wwwwcmm Cisco.com 7 Application 6 Presentation 5 Session 4 Transport 3 Network 2 Data Link Direct Link Control,Access to Media 介质访问控制 Physical -…----，-…----
© 2006, Shenzhen Polytechnic. All rights reserved. 9 OSI数据链路层（OSI Data Link Layer） 介质访问控制
OSl网络层(OSI Network Layer) Cisco.com 7 Application 6 Presentation Session 4 Transport 3 Network Network Address and Best Path Determination 阿络寻址和最佳路径选择 2 Data Link Physical 2006.ShenzhenPolytechnic.Allrightsreserved. 10
© 2006, Shenzhen Polytechnic. All rights reserved. 10 OSI网络层（OSI Network Layer）