1、SwitchA圖3-128配置VRRP主備備份組網圖VRRPVRID1VirtualIPAddress:GE1/0/210.1,1.1/24MasterfjMGE1/0/1GE1/0/1witchSwilchCGE1/0/1J92.168.1,2/24HostAGE1/0/21O.t1.100/24GE10210.1.1.2/24R|g_GEV0/3_%Pl721611/24GE1/0/2192.168.2.2/24RWGE1/0/1,1r192,168.2J/24SwrtchBBackup配置思路采用VRRP主備備份實現網關冗余備份，配置思路如下：1. 配置各設備接口IP地址及路由協議，使各

2、設備間網絡層連通。2. 在SwitchA和SwitchB上配置VRRP備份組。其中，SwitchA上配置較高優先級和20秒搶占延時，作為Master設備承擔流量轉發；SwitchB上配置較低優先級，作為備用交換機，實現網關冗余備份。操作步驟1. 配置設備間的網絡互連#配置設備各接口的IP地址，以SwitchA為例。SwitchB和SwitchC的配置與SwitchA類似，詳見配置文件。system-viewHUAWEIsysnameSwitchASwitchAvlanbatch100300SwitchAinterfacegigabitethernet1/0/1SwitchA-GigabitEt

3、hernet1/0/1portlink-typehybridSwitchA-GigabitEthernet1/0/1porthybridpvidvlan300SwitchA-GigabitEthernet1/0/1porthybriduntaggedvlan300SwitchA-GigabitEthernet1/0/1quitSwitchAinterfacegigabitethernet1/0/2SwitchA-GigabitEthernet1/0/2SwitchA-GigabitEthernet1/0/2SwitchA-GigabitEthernet1/0/2SwitchA-GigabitE

4、thernet1/0/2SwitchA interface vlanif 100SwitchA-Vlanif100 ip addressSwitchA-Vlanif100 quitSwitchA interface vlanif 300SwitchA-Vlanif300 ip addressSwitchA-Vlanif300 quitport link-type hybridport hybrid pvid vlan 100port hybrid untagged vlan 100quit2424#配置Switch的二層轉發功能。 system-viewHUAWEI sysname Switc

5、hSwitch vlan 100Switch-vlan100 quitSwitch interface gigabitethernet 1/0/1Switch-GigabitEthernet1/0/1Switch-GigabitEthernet1/0/1Switch-GigabitEthernet1/0/1Switch-GigabitEthernet1/0/1port link-type hybridport hybrid pvid vlan 100port hybrid untagged vlan 100quitSwitch-GigabitEthernet1/0/2Switch-Gigabi

6、tEthernet1/0/2Switch-GigabitEthernet1/0/2Switch-GigabitEthernet1/0/2port link-type hybridport hybrid pvid vlan 100port hybrid untagged vlan 100quit#配置SwitchA、SwitchB和SwitchC間采用OSPF協議進行互連。以SwitchA為例，SwitchB和SwitchC的配置與SwitchA類似，詳見配置文件。SwitchAospf1SwitchA-ospf-1area0networknetworkquitSwitchA-ospf-1qui

7、t2. 配置VRRP備份組#在SwitchA上創建VRRP備份組1,配置SwitchA在該備份組中白優先級為120,并配置搶占時間為20秒。SwitchAinterfacevlanif100SwitchA-Vlanif100vrrpvrid1virtual-ipvrrpvrid1priority120/設備在VRRP備份組中的優先級缺省為100,修改Master設備的優先級大于Backup設備SwitchA-Vlanif100vrrpvrid1preempt-modetimerdelay20/設備在VRRP備份組中缺省采用立即搶占方式。修改Master設備的延遲搶占時間，以避免在網絡環境不穩定

8、時，由于雙方頻繁搶占而導致流量中斷的問題SwitchA-Vlanif100quit#在SwitchB上創建VRRP備份組1,其在該備份組中的優先級采用缺省值100（不需要配置）。SwitchBinterfacevlanif100SwitchB-Vlanif100vrrpvrid1virtual-ipquit3.驗證配置結果#完成上述配置以后，在SwitchA和SwitchB上分別執行displayvrrp命令，可以看到SwitchA在備份組中的狀態為Master,SwitchB在備份組中的狀態為Backup。SwitchAdisplayvrrpVlanif100|VirtualRouter1S

9、tate:MasterVirtualIP:MasterIP:PriorityRun:120PriorityConfig:120MasterPriority:120Preempt:YESDelayTime:20sTimerRun:1sTimerConfig:1sAuthtype:NONEVirtualMAC:0000-5e00-0101CheckTTL:YESConfigtype:normal-vrrpBackup-forward:disabledCreatetime:2012-01-1220:15:46Lastchangetime:2012-01-1220:15:46SwitchBdispla

10、yvrrpVlanif100|VirtualRouter1State:BackupVirtualIP:MasterIP:PriorityRun:100PriorityConfig:100MasterPriority:120Preempt:YESDelayTime:0sTimerRun:1sTimerConfig:1sAuthtype:NONEVirtualMAC:0000-5e00-0101CheckTTL:YESConfigtype:normal-vrrpBackup-forward:disabledCreatetime:2012-01-1220:15:46Lastchangetime:20

11、12-01-1220:15:46#在SwitchA和SwitchB上執行displayiprouting-table命令，SwitchA上可以看到路由表中有一條目的地址為虛擬IP地址的直連路由，而SwitchB上該路由為OSPF路由。SwitchA和SwitchB上的顯示信息如下。SwitchAdisplayiprouting-tableRouteFlags:R-relay,D-downloadtofibRoutingTables:PublicRoutes : 10Destinations:9Destination/MaskProto Pre CostFlags NextHopInterfac

12、eDirect00DDirect00DDirect 00DDirect00DVlanif100Vlanif100Vlanif100InLoopBack0Direct00DInLoopBack0OSPF102DVlanif300Direct00DVlanif300Direct00DVlanif300OSPF102DVlanif100OSPF102DVlanif300SwitchBdisplayiprouting-tableRouteFlags:R-relay,D-downloadtofibRoutingTables:PublicDestinations:9Routes:10Destination

13、/MaskProtoPreCostFlagsNextHopInterfaceDirect00DVlanif100Direct00DVlanif100OSPF102DVlanif100Direct00DInLoopBack0Direct00DInLoopBack0OSPF102DVlanif200OSPF102DVlanif100OSPF102DVlanif200Direct00DVlanif200Direct00DVlanif200#在SwitchA的接口GE1/0/2上執行shutdown命令，模擬SwitchA出現故障。SwitchAinterfacegigabitethernet1/0/

14、2SwitchA-GigabitEthernet1/0/2shutdownSwitchA-GigabitEthernet1/0/2quit#在SwitchB上執行displayvrrp命令查看VRRP狀態信息，可以看到SwitchB的狀態是Master。SwitchBdisplayvrrpVlanif100|VirtualRouter1State:MasterVirtualIP:MasterIP:PriorityRun:100PriorityConfig:100MasterPriority:100Preempt:YESDelayTime:0sTimerRun:1sTimerConfig:1sA

15、uthtype:NONEVirtualMAC:0000-5e00-0101CheckTTL:YESConfigtype:normal-vrrpBackup-forward:disabledCreatetime:2012-01-1220:15:46Lastchangetime:2012-01-1220:18:40#在SwitchA的接口GE1/0/2上執行undoshutdown命令。SwitchA interface gigabitethernet 1/0/2SwitchA-GigabitEthernet1/0/2undoshutdownSwitchA-GigabitEthernet1/0/2

16、quit#等待20秒后，在SwitchA上執行displayvrrp命令查看VRRP狀態信息，可以看到SwitchA的狀態恢復成Master。SwitchAdisplayvrrpVlanif100|VirtualRouter1State:MasterVirtualIP:MasterIP:PriorityRun:120PriorityConfig:120MasterPriority:120Preempt:YESDelayTime:20sTimerRun:1sTimerConfig:1sAuthtype:NONEVirtualMAC:0000-5e00-0101CheckTTL:YESConfig

17、type:normal-vrrpBackup-forward:disabledCreatetime:2012-01-1220:15:46Lastchangetime:2012-01-1220:20:56配置文件SwitchA的配置文件#sysnameSwitchA#vlanbatch100300#interfaceVlanif100ipaddressvrrpvrid1virtual-ipvrrpvrid1priority120vrrpvrid1preempt-modetimerdelay20#interfaceVlanif300ipaddressGigabitEthernet1/0/1port

18、link-typehybridporthybridpvidvlan300porthybriduntaggedvlan300#interfaceGigabitEthernet1/0/2portlink-typehybridporthybridpvidvlan100porthybriduntaggedvlan100#ospf1areanetworknetwork的配置文件#sysnameSwitchB#vlanbatch100200#interfaceVlanif100ipaddressvrrpvrid1virtual-ipVlanif200ipaddressGigabitEthernet1/0/1portlink-typehybridporthybridpvidvlan200porthybriduntaggedvlan200#interfaceGigabitEthernet1/0/2portlink-typehybridporthybridpvidvlan100porthybriduntaggedvlan100#ospf1areanetworknetwork的配置文件#sysnameSw