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1、.项目案例计算机网络系统集成项目（工程项目案例及实践）所在系别： 计算机技术系 所属专业： 计算机网络技术 指导教师： 张海峰 专业负责人： 孙志成 MSR使用VRRP虚地址建立GRE隧道配置一.功能需求1.RTA和RTB采用VRRP做备份；2.RTA、RTB使用VRRP虚地址与RTC起GRE Tunnel。3.当RTA链路出现问题时，切换到备用RTB上，保持GRE VPN不断，PC可以快速访问到备用服务器；二.组网信息及描述三.配置步骤RTA的配置#配置接口地址，并起VRRPinterface GigabitEthernet0/0port link-mode routeip address
2、1.1.1.2 255.255.255.0vrrp vrid 1 virtual-ip 1.1.1.4vrrp vrid 1 priority 110vrrp vrid 1 preempt-mode timer delay 5#配置连接内网服务器接口地址interface GigabitEthernet0/1port link-mode routeip address 192.168.1.1 255.255.255.0#配置GRE，此处注意，RTA和RTB上的配置参数需要一致，source地址需要配置为VRRP的虚地址。interface Tunnel0ip address 10.1.1.1
3、255.255.255.0source 1.1.1.4destination 1.1.1.10keepalive 10 3#配置完，切记要添加一条静态路由，指向tunnel口。ip route-static 192.168.2.0 255.255.255.0 Tunnel0RTB的配置#配置接口地址，并起VRRPinterface GigabitEthernet0/0port link-mode routeip address 1.1.1.3 255.255.255.0vrrp vrid 1 virtual-ip 1.1.1.4vrrp vrid 1 preempt-mode timer de
4、lay 5#配置连接内网服务器接口地址interface GigabitEthernet0/1port link-mode routeip address 192.168.1.1 255.255.255.0#配置GRE，此处注意，RTA和RTB上的配置参数需要一致，source地址需要配置为VRRP的虚地址。interface Tunnel0ip address 10.1.1.1 255.255.255.0source 1.1.1.4destination 1.1.1.10keepalive 10 3#ip route-static 192.168.2.0 255.255.255.0 Tunn
5、el0#RTC的配置#配置出口地址interface GigabitEthernet0/0port link-mode routeip address 1.1.1.10 255.255.255.0#配置内网地址，这里使用一个loopback地址进行模拟interface LoopBack5ip address 192.168.2.2 255.255.255.255#配置GRE tunnelinterface Tunnel0ip address 10.1.1.2 255.255.255.0source 1.1.1.10destination 1.1.1.4keepalive 10 3#添加一条静
6、态路由，指向tunnel口ip route-static 192.168.1.0 255.255.255.0 Tunnel0配置完成之后，在RTA上观察VRRPRTAdis vrrp verIPv4 Standby Information:Run Mode: StandardRun Method: Virtual MACTotal number of virtual routers : 1Interface GigabitEthernet0/0VRID: 1Adver Timer : 1Admin Status: UpState: MasterConfig Pri: 110Running Pr
7、i : 110Preempt Mode: YesDelay Time: 5Auth Type: NoneVirtual IP: 1.1.1.4Virtual MAC: 0000-5e00-0101Master IP: 1.1.1.2在RTB上观察VRRPRTBdis vrrp verIPv4 Standby Information:Run Mode: StandardRun Method: Virtual MACTotal number of virtual routers : 1Interface GigabitEthernet0/0VRID: 1Adver Timer : 1Admin S
8、tatus: UpState: BackupConfig Pri: 100Running Pri : 100Preempt Mode: YesDelay Time: 5Become Master: 3100ms leftAuth Type: NoneVirtual IP: 1.1.1.4Master IP: 1.1.1.2可以看到，RTA为mater设备。在RTA的观察tunnel0RTAdis interface Tunnel 0Tunnel0 current state: UPLine protocol current state: UPDescription: Tunnel0 Inter
9、faceThe Maximum Transmit Unit is 1476Internet Address is 20.1.1.1/24 PrimaryEncapsulation is TUNNEL, service-loopback-group ID not set.Tunnel source 1.1.1.4, destination 1.1.1.10Tunnel bandwidth 64 (kbps)Tunnel keepalive enabled, Period(10 s), Retries(3)Tunnel protocol/transport GRE/IPGRE key disabl
10、edChecksumming of GRE packets disabledOutput queue : (Urgent queuing : Size/Length/Discards)0/100/0Output queue : (Protocol queuing : Size/Length/Discards)0/500/0Output queue : (FIFO queuing : Size/Length/Discards)0/75/0Last clearing of counters:NeverLast 300 seconds input:2 bytes/sec, 0 packets/sec
11、Last 300 seconds output:2 bytes/sec, 0 packets/sec404 packets input,4956 bytes0 input error233 packets output,5700 bytes0 output error在RTB上观察tunnel0RTBdis interface Tunnel 0Tunnel0 current state: DOWNLine protocol current state: DOWNDescription: Tunnel0 InterfaceThe Maximum Transmit Unit is 64000Int
12、ernet Address is 10.1.1.1/24 PrimaryEncapsulation is TUNNEL, service-loopback-group ID not set.Tunnel source 1.1.1.4, destination 1.1.1.10Tunnel bandwidth 64 (kbps)Tunnel keepalive enabled, Period(10 s), Retries(3)Tunnel protocol/transport GRE/IPGRE key disabledChecksumming of GRE packets disabledOu
13、tput queue : (Urgent queuing : Size/Length/Discards)0/100/0Output queue : (Protocol queuing : Size/Length/Discards)0/500/0Output queue : (FIFO queuing : Size/Length/Discards)0/75/0Last clearing of counters:NeverLast 300 seconds input:0 bytes/sec, 0 packets/secLast 300 seconds output:0 bytes/sec, 0 packets/sec0 packets input,0 bytes0 input error0 packets output,0 bytes0 output error在RTC上观察tunnel0RTCdis int Tunnel 0Tunnel0 current state: UPLine protocol current state: UP
