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1、第三章 配置虚拟局域网（VLAN),虚拟局域网VLAN,网络分段灵活性安全性,3rd floor,2nd floor,1st floor,SALES,HR,ENG,每个VLAN都等于一个广播域,VLAN的操作与特性,每个VLAN都类似一个物理网段一个VLAN可跨越多个交换机干道（Trunk）携载多个VLAN的信息,VLAN的成员模式,静态：由管理员静态（人工）配置动态：基于MAC地址、IP地址等识别其成员资格,VLAN5,静态 VLAN,动态 VLAN,VLAN10,Port e0/9,Port e0/4,基于端口的VLAN划分,VLAN 2,VLAN 1,VLAN 3,VLAN的标准,Cis
2、co ISL,Initial MACAddress,Initial Type/Data,New CRC,2-Byte TPID2-Byte TCI,ISL Header26 bytes,Encapsulated Ethernet frame,CRC4 bytes,IEEE802.1Q,配置静态VLAN,EngineeringVLAN,MarketingVLAN,SalesVLAN,Floor#1,Floor#2,Floor#3,Physical LayerLAN Switch,Human Layer,Network Layer,Routing FunctionInterconnects VLA
3、Ns,Data-Link LayerBroadcastDomains,All users attached to same switch port must be in the same VLAN.,x,VLAN的配置步骤,定义Trunk创建VLAN划分VLAN成员检查配置结果,Defining a Trunk,trunk on|off|desirable|auto|nonegotiate,wg_sw_a(config-if)#,On=Set trunk on and negotiate with other sideOff=Set trunk off and negotiate with o
4、ther sideDesirable=Negotiate with other side.Trunk on if other side is on,desirable,or autoAuto=Will be a trunk only if the other side is on or desirableNon-negotiate=Set trunk on and will not negotiate,Defining a Trunk,wg_sw_a#conf terminal Enter configuration commands,one per line.End with CNTL/Zw
5、g_sw_a(config)#interface f0/26wg_sw_a(config-if)#trunk on,First trunk port(Port A),On=Set trunk on and negotiate with other sideOff=Set trunk off and negotiate with other sideDesirable=Negotiate with other side.Trunk on if other side is on,desirable,or autoAuto=Will be a trunk only if the other side
6、 is on or desirableNon-negotiate=Set trunk on and will not negotiate,trunk on|off|desirable|auto|nonegotiate,wg_sw_a(config-if)#,Verifying a Trunk,wg_sw_a#show trunk A|B,中国最庞大的数据库下载,Verifying a Trunk,wg_sw_a#show trunk aDISL state:On,Trunking:On,Encapsulation type:ISL,wg_sw_a#show trunk A|B,Adding a
7、 VLAN,vlan vlan#name vlan-name,wg_sw_a(config)#,Adding a VLAN,wg_sw_a#conf terminal Enter configuration commands,one per line.End with CNTL/Zwg_sw_a(config)#vlan 9 name switchlab2,vlan vlan#name vlan-name,wg_sw_a(config)#,Verifying a VLAN,wg_sw_a#show vlan vlan#,Verifying a VLAN,wg_sw_a#sh vlan 9VLA
8、N Name Status Ports-9 switchlab2 Enabled-VLAN Type SAID MTU Parent RingNo BridgeNo Stp Trans1 Trans2-9 Ethernet 100009 1500 0 1 1 Unkn 0 0-,wg_sw_a#show vlan vlan#,Modifying a VLAN Name,vlan vlan#name vlan-name,wg_sw_a#conf terminal Enter configuration commands,one per line.End with CNTL/Zwg_sw_a(co
9、nfig)#vlan 9 name switchlab90,wg_sw_a#show vlan 9VLAN Name Status Ports-9 switchlab90 Enabled-,wg_sw_a(config)#,Assigning Switch Ports to a VLAN,vlan-membership static vlan#|dynamic,wg_sw_a(config-if)#,Assigning Switch Ports to a VLAN,wg_sw_a#conf terminal Enter configuration commands,one per line.E
10、nd with CNTL/Zwg_sw_a(config)#interface ethernet 0/8wg_sw_a(config-if)#vlan-membership static 9,vlan-membership static vlan#|dynamic,wg_sw_a(config-if)#,Verifying VLAN Membership,wg_sw_a#show vlan-membership,Verifying VLAN Membership,wg_sw_a#show vlan-membership Port VLAN Membership Type Port VLAN Membership Type-1 5 Static 13 1 Static 2 1 Static 14 1 Static 3 1 Static 15 1 Static 4 1 Static 16 1 Static 5 1 Static 17 1 Static 6 1 Static 18 1 Static 7 1 Static 19 1 Static 8 9 Static 20 1 Static,Note:port 1=e0/1,port 2=e0/2.,wg_sw_a#show vlan-membership,使用终端检查,
