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1、.思科路由器雙WAN口負載分擔并NAT及互為備份說明：客戶接入ISP1及ISP2，內(nèi)部有4個網(wǎng)段分別是：192.168.10.0/24192.168.20.0/2410.10.10.0/2420.20.20.20/24正常模式為192.168.10.0和10.10.10.0兩個網(wǎng)段優(yōu)先走ISP1，192.168.20.0和202.20.20.0兩個網(wǎng)段優(yōu)先走ISP2。當IPS1線路中斷時（即使R3接IPS1的接口是UP）192.168.10.0和10.10.10.0兩個網(wǎng)段會自動轉(zhuǎn)到ISP2，ISP2中斷時同亦。下面是拓撲圖，及各臺設(shè)備的配置
2、文檔，在GNS3上模擬測試成功。（在網(wǎng)絡(luò)上一直是伸手黨，現(xiàn)在也分享下自己的經(jīng)驗，有不當之處還請指教，謝謝）word范文.分別在R1、R2均配置loopback01.1.1.1/32為測試對象,R3為邊界路由器，配置最多放在最后R1R1#shrunBuildingconfiguration...Currentconfiguration:761bytes!version12.4servicetimestampsdebugdatetimemsecservicetimestampslogdatetimemsecnoservicepassword-en
3、cryption!hostnameR1!word范文.boot-start-markerboot-end-marker!!noaaanew-model!!ipcefnoipdomainlookup!!interfaceLoopback0ipaddress1.1.1.1255.255.255.255!interfaceFastEthernet0/0ipaddress11.11.11.3255.255.255.248duplexautospeedauto!interfaceFastEthernet0/1noipaddressshutdowndup
4、lexautospeedauto!iproute11.11.11.0255.255.255.24811.11.11.1!noiphttpservernoiphttpsecure-server!control-plane!gatekeepershutdown!!linecon0exec-timeout00loggingsynchronousstopbits1lineaux0stopbits1linevty04!word范文.endR2R2#shrunBuildingconfiguration...Currentconfiguration:761
5、bytes!version12.4servicetimestampsdebugdatetimemsecservicetimestampslogdatetimemsecnoservicepassword-encryption!hostnameR2!boot-start-markerboot-end-marker!!noaaanew-model!!ipcefnoipdomainlookup!!interfaceLoopback0ipaddress1.1.1.1255.255.255.255!interfaceFastEthernet0/0ipad
6、dress22.22.22.3255.255.255.248duplexautospeedauto!interfaceFastEthernet0/1noipaddressshutdownduplexautospeedauto!iproute22.22.22.0255.255.255.24822.22.22.1!noiphttpserverword范文.noiphttpsecure-servercontrol-plane!gatekeepershutdown!!linecon0exec-timeout00loggingsynchronousst
7、opbits1lineaux0stopbits1linevty04!endR4R4#SHRUNBuildingconfiguration...Currentconfiguration:755bytes!version12.4servicetimestampsdebugdatetimemsecservicetimestampslogdatetimemsecnoservicepassword-encryption!hostnameR4!boot-start-markerboot-end-marker!!noaaanew-model!!ipcefn
8、oipdomainlookup!!!word范文.!!!!!!!!!!!!!!!!!!!!interfaceLoopback0ipaddress10.10.10.1
