网络设备:第3章_交换机.ppt
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1、第第 3 章章 交换机交换机本章目标本章目标n了解二层交换机功能了解二层交换机功能 (了解)(了解)n冗余的拓扑结构冗余的拓扑结构 (了解)(了解)n生成树协议生成树协议 (掌握)(掌握)n管理管理MAC地址表地址表 (掌握)(掌握)授课重点授课重点n生成树协议生成树协议n交换机的配置交换机的配置n转发帧的方式转发帧的方式 授课方法授课方法n建议使用投影或分屏教室,先理论授课,建议使用投影或分屏教室,先理论授课,后使用后使用Packet Tracer软件配置交换机软件配置交换机的功能。的功能。Cisco交换机介绍(补充知识点)交换机介绍(补充知识点)nCiscoCisco局域网交换机产品与技术
2、局域网交换机产品与技术nCiscoCisco园区网交换解决方案园区网交换解决方案 Cisco Catalyst SwitchCatalyst1900/2820Catalyst2900&2950 Series XLCatalyst 3500Series XLCatalyst4000SeriesCatalyst 2948G(-L3)Catalyst 4912Catalyst 5500Catalyst 6x00Catalyst 8500价格价格可扩展性可扩展性Function中小企业工作组中小企业工作组中小企业骨干中小企业骨干大型企业配线间大型企业配线间园区网园区网/城域网城域网骨干骨干Cataly
3、st 4908G-L3新新新新Catalyst 2980GCatalyst 3550-12T Catalyst Switch PositionLayer 2Voice 语音语音Layer 3企业配线间企业配线间Content-Based Switching and Routing基于内容的交换与路由基于内容的交换与路由中低端市场中低端市场骨干骨干增值业务增值业务Catalyst 2948/Catalyst 2948/35503550Catalyst 4000Catalyst 4000Catalyst 5000Catalyst 5000Catalyst Catalyst 60006000Cata
4、lyst1900/2820Catalyst1900/2820 2900/2900/29502950/3500/3500Any-to-AnyCatalyst 1900 n12 个或个或 24 个交换个交换 10BaseT 端口端口+1 个交换个交换AUI端口端口n1024 个个MAC 地址地址n所有型号均有所有型号均有2 个百兆固定端口个百兆固定端口 2个个 100BaseTX 端口端口 或或 2个个100BaseFX 端口端口;或或 1 个个 100BaseTX 端口和端口和1 个个100BaseFX 端口端口;nSPAN 端口端口n冗余电源冗余电源n集成化管理集成化管理nCDP(Cisco发
5、现协议发现协议)Catalyst 1900 定位定位:桌面桌面/工作组级交换机工作组级交换机特性特性:可堆叠和集群,可堆叠和集群,多种型号多种型号卖点卖点:高性能高性能,低价格,平滑升级低价格,平滑升级 CISCO:Catalyst 1912/1924多种型号,支持多种型号,支持100BaseTX/FX,满满足用户需要足用户需要支持支持 ISL,满足园区网规模满足园区网规模VLAN应应用用支持端到端的支持端到端的FEC,防止链路拥挤防止链路拥挤支持组播支持组播(CGMP),适应多媒体应用适应多媒体应用支持支持SNMP及及RMON,方便网络管理方便网络管理 支持每端口安全设置支持每端口安全设置,
6、防止非法使用防止非法使用支持支持CISCO独有独有Cluster集群技术集群技术,维护更方便维护更方便广播风暴抑制广播风暴抑制 802.1D 生成树生成树(spanning tree)Catalyst 2900 XL Featuresn n杰出性能杰出性能杰出性能杰出性能 3.0-3.0-3.0-3.0-M M M Mppsppsppspps转发速率转发速率转发速率转发速率n n两个扩展槽两个扩展槽两个扩展槽两个扩展槽,更灵活的上连模块更灵活的上连模块更灵活的上连模块更灵活的上连模块:GE/ATM/FE:GE/ATM/FE:GE/ATM/FE:GE/ATM/FE等等等等n n支持组播支持组播支
7、持组播支持组播(CGMP),(CGMP),(CGMP),(CGMP),提供多媒体应用支持提供多媒体应用支持提供多媒体应用支持提供多媒体应用支持n n与其他与其他与其他与其他CISCOCISCOCISCOCISCO产品紧密集成产品紧密集成产品紧密集成产品紧密集成:(VLAN,CGMP,:(VLAN,CGMP,:(VLAN,CGMP,:(VLAN,CGMP,n n FEC/GEC),FEC/GEC),FEC/GEC),FEC/GEC),提供最佳的总体网络性能提供最佳的总体网络性能提供最佳的总体网络性能提供最佳的总体网络性能n n支持支持支持支持CISCOCISCOCISCOCISCO独有独有独有独
8、有ClusterClusterClusterCluster集群技术集群技术集群技术集群技术,维护更方便维护更方便维护更方便维护更方便ISL/802.1Q VLAN 模块模块Catalyst 2900 XL ModulenISL/802.1Q VLAN 模块模块4-port 10/100 TX 2-port 100BaseFX4-port 100BaseFXISL/802.1QnGigabit Ethernet 模块模块单端口1000BaseX 插槽模块支持ISL/802.1QnATM 模块模块单端口 OC-3 ATM 模块,包括:UTP非屏蔽双绞线多模光纤单模光纤(10 Km)长距离单模光纤(
9、40 Km)11From Catalyst 2900 to Catalyst 2950 Catalyst 2950 ProductDescriptionCatalyst 2924-XL-EN(WS-C2924-XL-EN)24 10/100 ports+2 10/100/1000BASE-T portsCurrent 2900XL ProductCatalyst 2950T-24(WS-C2950T-24)24 10/100 portsCatalyst 2950-24(WS-C2950-24)Catalyst 2912-XL-EN(WS-C2912-XL-EN)12 10/100 portsC
10、atalyst 2950-12(WS-C2950-12)Catalyst 2924C-XL-EN(WS-C2924C-XL-EN)24 10/100 ports+2 100BASE-FX portsCatalyst 2950C-24(WS-C2950C-24)ORNEWCatalyst 3500 XL SeriesForty-Eight Forty-Eight 10/100 Ports10/100 PortsTwo GBIC-Based Two GBIC-Based GE PortsGE PortsCisco Switch Cisco Switch ClusteringClusteringSt
11、ackable,One Stackable,One RURUIdeal for High Ideal for High Density Desktop Density Desktop ConnectionsConnectionsCatalyst 3548 XLCatalyst 3548 XLTwelve 10/100 Twelve 10/100 PortsPortsTwo GBIC-Based Two GBIC-Based GE PortsGE PortsCisco Switch Cisco Switch Clustering Clustering Stackable,One Stackabl
12、e,One RURUIdeal for Small Ideal for Small Network Network AggregationAggregationCatalyst 3512 XLCatalyst 3512 XLMedium Port Medium Port DensityDensity Twenty-Four Twenty-Four 10/100 Ports10/100 PortsTwo GBIC-Based Two GBIC-Based GE PortsGE PortsCisco Switch Cisco Switch ClusteringClusteringStackable
13、,One Stackable,One RURUIdeal for DesktopIdeal for DesktopConnectionsConnectionsCatalyst 3524 XLCatalyst 3524 XLCatalyst 3508G XLCatalyst 3508G XLEight GBIC-Eight GBIC-Based Based GE PortsGE PortsCisco Switch Cisco Switch ClusteringClusteringStackable,One Stackable,One RURUIdeal for Stack Ideal for S
14、tack AggregationAggregationUnit PriceUnit PriceLow Port Low Port DensityDensityGigabit Gigabit Ethernet Ethernet AggregationAggregationMedium Port Medium Port DensityDensity Twenty-Four Twenty-Four 10/100 Ports10/100 PortsTwo GBIC-Based Two GBIC-Based GE PortsGE PortsCisco Switch Cisco Switch Cluste
15、ringClusteringStackable,One Stackable,One RURUIn-line PowerIn-line PowerIdeal for Ideal for Converged Converged DesktopDesktopConnectionsConnectionsCatalyst 3524-PWR XLCatalyst 3524-PWR XLHigh Port DensityHigh Port DensityCatalyst 3524-PWR Series XLIP Inline PowerCatalyst 3524-PWR Series XLUPSUPSUPS
16、UPSUPSRPSUPSCatalyst 3524-PWR Catalyst 3524-PWR series XL series XL 能够自动发现能够自动发现没有外接电源的没有外接电源的IPIP电话机,电话机,并通过标准的并通过标准的5 5类双绞线类双绞线为电话机提供直流电源为电话机提供直流电源Catalyst 3550 Series Intelligent Ethernet SwitchesCatalyst 3550-12GCatalyst 3550-24Catalyst 3550-48Unit PriceMedium Port DensityMedium Port DensityCata
17、lyst 3550-12T24 10/100 Ports24 10/100 Ports2 GBIC ports2 GBIC portsStackable,1 RUStackable,1 RUEnterprise-class Enterprise-class intelligent servicesintelligent servicesHigh performance IP High performance IP routingroutingIdeal for desktop Ideal for desktop connectivityconnectivityCisco Cluster Cis
18、co Cluster Management SuiteManagement SuiteGigabit Ethernet AggregationGigabit Ethernet AggregationNEWHigh Port DensityHigh Port Density48 10/100 Ports48 10/100 Ports2 GBIC ports2 GBIC portsStackable,1 RUStackable,1 RUEnterprise-class Enterprise-class intelligent servicesintelligent servicesHigh per
19、formance IP High performance IP routingroutingIdeal for desktop Ideal for desktop connectivityconnectivityCisco Cluster Cisco Cluster Management SuiteManagement Suite10 10/100/1000 Ports10 10/100/1000 Ports2 GBIC ports2 GBIC portsStackable,1.5 RUStackable,1.5 RUEnterprise-class Enterprise-class inte
20、lligent servicesintelligent servicesHigh performance IP High performance IP routingroutingIdeal for stack Ideal for stack aggregation,server aggregation,server aggregation,or in small aggregation,or in small network backbonenetwork backboneCisco Cluster Cisco Cluster Management SuiteManagement Suite
21、10 GBIC Ports10 GBIC Ports2 10/100/1000 Ports2 10/100/1000 PortsStackable,1.5 RUStackable,1.5 RUEnterprise-class Enterprise-class intelligent servicesintelligent servicesHigh performance IP High performance IP routingroutingIdeal for stack Ideal for stack aggregation,server aggregation,server aggreg
22、ation,or in small aggregation,or in small network backbonenetwork backboneCisco Cluster Cisco Cluster Management SuiteManagement SuiteNEW3.1 二层交换机的功能二层交换机的功能n学习地址学习地址n转发及过滤转发及过滤帧帧n消除环路消除环路3.1.1 学习地址学习地址n初始的物理地址表是空的初始的物理地址表是空的MAC address table0260.8c01.11110260.8c01.22220260.8c01.33330260.8c01.4444E0
23、E1E2E3ABCD3.1.1 学习地址(续)学习地址(续)n主机主机A A向向主机主机C C发送一个帧发送一个帧n交换机的缓存中将从交换机的缓存中将从E0E0端口学习到主机端口学习到主机A A的的物理地址物理地址n从主机从主机A A除了端口除了端口E0E0外将向外将向其他所有端口泛洪其他所有端口泛洪 (不知道不知道的单播将泛洪的单播将泛洪)物理地址表物理地址表0260.8c01.11110260.8c01.22220260.8c01.33330260.8c01.4444E0:0260.8c01.1111E0E1E2E3DCBA3.1.1 学习地址(续)学习地址(续)n主机主机D D向主机向主
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