-.z.工程案例計(jì)算機(jī)網(wǎng)絡(luò)系統(tǒng)集成工程〔工程工程案例及實(shí)踐〕所在系別：計(jì)算機(jī)技術(shù)系所屬專業(yè)：計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)指導(dǎo)教師：海峰專業(yè)負(fù)責(zé)人：志成MSR使用VRRP虛地址建立GRE隧道配置一.功能需求1.RTA和RTB采用VRRP做備份；2.RTA、RTB使用VRRP虛地址與RTC起GRETunnel。3.當(dāng)RTA鏈路出現(xiàn)問題時(shí)，切換到備用RTB上，保持GREVPN不斷，PC可以快速訪問到備用效勞器；二.組網(wǎng)信息及描述三.配置步驟RTA的配置*配置接口地址，并起VRRPinterfaceGigabitEthernet0/0portlink-moderoutevrrpvrid1priority110vrrpvrid1preempt-modetimerdelay5*配置連接網(wǎng)效勞器接口地址interfaceGigabitEthernet0/1portlink-moderoute*配置GRE，此處注意，RTA和RTB上的配置參數(shù)需要一致，source地址需要配置為VRRP的虛地址。interfaceTunnel0keepalive103*配置完，切記要添加一條靜態(tài)路由，指向tunnel口。iproute-static192.168.2.0255.255.255.0Tunnel0RTB的配置*配置接口地址，并起VRRPinterfaceGigabitEthernet0/0portlink-moderoutevrrpvrid1preempt-modetimerdelay5*配置連接網(wǎng)效勞器接口地址interfaceGigabitEthernet0/1portlink-moderoute*配置GRE，此處注意，RTA和RTB上的配置參數(shù)需要一致，source地址需要配置為VRRP的虛地址。interfaceTunnel0keepalive103*iproute-static192.168.2.0255.255.255.0Tunnel0*RTC的配置*配置出口地址interfaceGigabitEthernet0/0portlink-moderoute*配置網(wǎng)地址，這里使用一個(gè)loopback地址進(jìn)展模擬interfaceLoopBack5*配置GREtunnelinterfaceTunnel0keepalive103*添加一條靜態(tài)路由，指向tunnel口iproute-static192.168.1.0255.255.255.0Tunnel0配置完成之后，在RTA上觀察VRRP[RTA]disvrrpverIPv4StandbyInformation:RunMode:StandardRunMethod:VirtualMACTotalnumberofvirtualrouters:1InterfaceGigabitEthernet0/0VRID:1AdverTimer:1AdminStatus:UpState:MasterConfigPri:110RunningPri:110PreemptMode:YesDelayTime:5AuthType:NoneVirtualMAC:0000-5e00-0101在RTB上觀察VRRP[RTB]disvrrpverIPv4StandbyInformation:RunMode:StandardRunMethod:VirtualMACTotalnumberofvirtualrouters:1InterfaceGigabitEthernet0/0VRID:1AdverTimer:1AdminStatus:UpState:BackupConfigPri:100RunningPri:100PreemptMode:YesDelayTime:5BeeMaster:3100msleftAuthType:None可以看到，RTA為mater設(shè)備。在RTA的觀察tunnel0[RTA]disinterfaceTunnel0Tunnel0currentstate:UPLineprotocolcurrentstate:UPDescription:Tunnel0InterfaceTheMa*imumTransmitUnitis1476EncapsulationisTUNNEL,service-loopback-groupIDnotset.Tunnelbandwidth64(kbps)Tunnelkeepaliveenabled,Period(10s),Retries(3)Tunnelprotocol/transportGRE/IPGREkeydisabledChecksummingofGREpacketsdisabledOutputqueue:(Urgentqueuing:Size/Length/Discards)0/100/0Outputqueue:(Protocolqueuing:Size/Length/Discards)0/500/0Outputqueue:(FIFOqueuing:Size/Length/Discards)0/75/0Lastclearingofcounters:NeverLast300secondsinput:2bytes/sec,0packets/secLast300secondsoutput:2bytes/sec,0packets/sec404packetsinput,4956bytes0inputerror233packetsoutput,5700bytes0outputerror在RTB上觀察tunnel0[RTB]disinterfaceTunnel0Tunnel0currentstate:DOWNLineprotocolcurrentstate:DOWNDescription:Tunnel0InterfaceTheMa*imumTransmitUnitis64000EncapsulationisTUNNEL,service-loopback-groupIDnotset.Tunnelbandwidth64(kbps)Tunnelkeepaliveenabled,Period(10s),Retries(3)Tunnelprotocol/transportGRE/IPGREkeydisabledChecksummingofGREpacketsdisabledOutputqueue:(Urgentqueuing:Size/Length/Discards)0/100/0Outputqueue:(Protocolqueuing:Size/Length/Discards)0/500/0Outputqueue:(FIFOqueuing:Size/Length/Discards)0/75/0Lastclearingofcounters:NeverLast300secondsinput:0bytes/sec,0packets/secLast300secondsoutput:0bytes/sec,0packets/sec0packetsinput,0bytes0inputerror0packetsoutput,0bytes0outputerror在RTC上觀察tunnel0[RTC]disintTunnel0Tunnel0currentstate:UPLineprotocolcurrentstate:UPDescription:Tunnel0InterfaceTheMa*imumTransmitUnitis1476EncapsulationisTUNNEL,service-loopback-groupIDnotset.Tunnelbandwidth64(kbps)Tunnelkeepaliveenabled,Period(10s),Retries(3)Tunnelprotocol/transportGRE/IPGREkeydisabledChecksummingofGREpacketsdisabledOutputqueue:(Urgentqueuing:Size/Length/Discards)0/100/0Outputqueue:(Protocolqueuing:Size/Length/Discards)0/500/0Outputqueue:(FIFOqueuing:Size/Length/Discards)0/75/0Lastclearingofcounters:NeverLast300secondsinput:0bytes/sec,0packets/secLast300secondsoutput:2bytes/sec,0packets/sec221packetsinput,324bytes0inputerror239packetsoutput,5844bytes0outputerror斷開RTA的連線之后，可以看到VRRP已經(jīng)切換到了RTB設(shè)備上。[RTB]disvrrpverIPv4StandbyInformation:RunMode:StandardRunMethod:VirtualMACTotalnumberofvirtualrouters:1InterfaceGigabitEthernet0/0VRID:1AdverTimer:1AdminStatus:U