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1、背景：機房三層交換機到弱電間接入層交換機通過光纖連接，某日突然發(fā)現(xiàn)接入交換機網(wǎng)絡不通，經(jīng)過現(xiàn)場檢查發(fā)現(xiàn)光口燈不亮。用紅光筆測試發(fā)現(xiàn)光纖鏈路故障。方案一：重新從機房到弱電間拉一根光纖成本較高方案二：從弱電間的另外一個交換機接光纖到故障交換機成本較高，需要增加光模塊方案三：從弱電間的另外交換機接一根網(wǎng)線到故障交換機成本基本可以忽略方案四：從弱電間的另外交換機接兩根網(wǎng)線到故障交換機，做鏈路聚合成本可以忽略從以上四個方案，我們選擇了方案四，拓撲如下三層交換機：配置dchpserver配置部門所在的VLAN配置trunk配置vtpserver和domai
2、n、password7503#shrunBuildingconfiguration...Currentconfiguration:1532bytes!version16.3.2noservicetimestampslogdatetimemsecnoservicetimestampsdebugdatetimemsecnoservicepassword-encryption!hostname7503!!!!ipdhcppoolzhaoshangnetwork10.64.42.0255.255.255.0default-router10.64.42.
3、254dns-server10.64.25.1!!!noipcefnoipv6cef!!!!!!!!!!!!!spanning-treemodepvst!!!!!!interfaceGigabitEthernet1/0/1!interfaceGigabitEthernet1/0/2!interfaceGigabitEthernet1/0/3!interfaceGigabitEthernet1/0/4!interfaceGigabitEthernet1/0/5!interfaceGigabitEthernet1/0/6!interfaceGiga
4、bitEthernet1/0/7!interfaceGigabitEthernet1/0/8!interfaceGigabitEthernet1/0/9!interfaceGigabitEthernet1/0/10!interfaceGigabitEthernet1/0/11!interfaceGigabitEthernet1/0/12!interfaceGigabitEthernet1/0/13!interfaceGigabitEthernet1/0/14!interfaceGigabitEthernet1/0/15!interfaceGig
5、abitEthernet1/0/16!interfaceGigabitEthernet1/0/17!interfaceGigabitEthernet1/0/18!interfaceGigabitEthernet1/0/19!interfaceGigabitEthernet1/0/20!interfaceGigabitEthernet1/0/21!interfaceGigabitEthernet1/0/22!interfaceGigabitEthernet1/0/23!interfaceGigabitEthernet1/0/24!interfac
6、eGigabitEthernet1/1/1!interfaceGigabitEthernet1/1/2!interfaceGigabitEthernet1/1/3!interfaceGigabitEthernet1/1/4!interfaceVlan1noipaddressshutdown!interfaceVlan42mac-address0002.17e5.5501ipaddress10.64.42.254255.255.255.0!ipclassless!ipflow-exportversion9!!!!!!!linecon0!linea
7、ux0!linevty04login!!!endS1交換機：配置fa0/1和fa0/2的端口匯聚配置匯聚端口的trunk配置vtpclient和password、domains1#shrunBuildingconfiguration...Currentconfiguration:1267bytes!version12.1noservicetimestampslogdatetimemsecnoservicetimestampsdebugdatetimemsecnoservicepassword-encryption!hostnames1!!!!!
8、spanning-treemodepvstspanning-treeextendsystem-id!interfacePort-channel1swi
