02实验指导(PVST、portfast、uplinkfast、EtherChannel

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1、实验指导(PVSTnportfast、upIinkfast>EtherChannel)一、实验任务VLAN1.VLAN3VLAN2、VLAN41、利用以前的知识，创建VLAN2-VLAN42、配置：SW1为VLAN1和VLAN3的根桥；SW2为VLAN2和VLAN4的根桥3、配置：VLAN1和VLAN3通信使用SW1和SW2Z间的上面链路；VLAN2和VLAN4通信使用SW1和SW2之间的下面链路二、实验步骤1、清除交换机的配置(在三台交换机上执行):Switch#erasestartup-configSwitch#delet

2、eflash:vian.datSvitch#reload2、灌入预配：SI:======================================interfaceFastEthernetO/13switchporttrunkencapsulationdotlqswitchportmodetrunkinterfaceFastEthernetO/14switchporttrunkencapsulationdotlqswitchportmodetrunkinterfaceFastEthernetO/15switchport

3、trunkencapsulationdotlqswitchportmodetrunkVian2Vian3Vian4KQ乙.interfaceFastEthernetO/13switchporttrunkencapsulationdotlqswitchportmodetrunkinterfaceFastEthernetO/14switchporttrunkencapsulationdotlqswitchportmodetrunkinterfaceFastEthernetO/15switchporttrunkencapsulati

4、ondotlqswitchportmodetrunkVian2Vian3Vian4S3:===========interfaceFastEthernetO/1switchportmodetrunkinterfaceFastEthernctO/1switchportmodetrunkVian2Vian3Vian43、查看默认STP：Sliishowsparrning-treevlan1S2#showsparming-treevlan1S3#showspanning-treevlan1VLAN0001SpanningRootIDt

5、reeenabledPriorityAddressThisbridgeHelloTimeprotocolicee327690009.b7a4.c380isthe2secrootMaxAge20secForwardDelay15secBridgeIDPriorityAddressHelloTimeAgingTime32769InterfaceFa0/lFaO/2(priority32768sys-id-ext1)0009.b7a4.c3802secMaxAge20secForwardDelay15sec300RoleStsCos

6、tPrio.NbrTypeDesgFWD19DesgFWD1912&1P2p12&2P2用以上命令画出各个VLAN默认的STP树的情况。4、配置STPSW1:spanning-treesparrnin£-treespanning-treespanning-treevlan1vlan3vlan2vlan4prioritypriorityprioritypriority4096409681928192SW2:sparmi昭一treespanning-treespanning-treesparming-lrcovlan2vlan4v

7、lan1vlan3prioritypriorityprioritypriority4096409681928192SW1：intfO/14(下面的链路)sparrning-trcevlan2cost4spanning-treevian4cost4SW2:intfO/13(上面的链路)spanning-treevlan1cost4spanning-treevlan3cost45、检査STP树Sliishowsparrning-treevlan1S2#showsparming-treevlan1S3#showsparmingtre

8、evlan1用以上命令画出各个VLAN默认的STP树的情况6>配置portfastSI(config)#interfacerangefO/1-4SI(config-if)#switchportmodeaccessSI(config-if)#spanning-treeportf