VRRP基础配置

拓扑图





实验过程

1. pc的配置

Router>en Router#conf t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#no ip domain-lookup Router(config)#line con 0 Router(config-line)#no exec-timeout Router(config-line)#loggin syn Router(config-line)#exit Router(config)#host pc pc(config)#no ip routing pc(config)#int f0/0 pc(config-if)#no shut pc(config-if)#ip add 192.168.1.1 255.255.255.0 pc(config-if)#exit pc(config)#ip default-gateway 192.168.1.254 pc(config)#end

2. R1的配置

Router>en Router#conf t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#no ip domain-lookup Router(config)#line con 0 Router(config-line)#no exec-timeout Router(config-line)#loggin syn Router(config-line)#exit Router(config)#host R1 R1(config)#int f0/0 R1(config-if)#no shut R1(config-if)#ip add 192.168.1.10 255.255.255.0 R1(config-if)#vrrp 10 ip 192.168.1.254 //[/b]配置vrrp[/b]组10[/b]的IP[/b] R1(config-if)#end[/b]

3. R2的配置

Router>en Router#conf t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#no ip domain-lookup Router(config)#line con 0 Router(config-line)#no exec-timeout Router(config-line)#loggin syn Router(config-line)#exit Router(config)#host R2 R2(config)#int f0/0 R2(config-if)#no shut R2(config-if)#ip add 192.168.1.20 255.255.255.0 R2(config-if)#vrrp 10 ip 192.168.1.254[/b] R2(config-if)#end

4. 查看vrrp信息

R1#show vrrp bri Interface Grp Pri Time Own Pre State Master addr Group addr Fa0/0 10 100 3609 Y Backup[/b] 192.168.1.20 192.168.1.254 R2#show vrrp bri Interface Grp Pri Time Own Pre State Master addr Group addr Fa0/0 10 100 3609 Y Master[/b] 192.168.1.20 192.168.1.254

说明：现在R1[/b]是Backup Router[/b]，R2[/b]是Master Router[/b]，R2[/b]处于转发状态。[/b]

5. 关闭R2的f0/0，模拟故障。

R2(config)#int f0/0 R2(config-if)#shut R1#show vrrp br Interface Grp Pri Time Own Pre State Master addr Group addr Fa0/0 10 100 3609 Y Master 192.168.1.10 192.168.1.254

说明：现在R1[/b]是Master Router[/b]，处于转发状态[/b]
6. 测试连通性

pc#ping 192.168.1.254 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.1.254, timeout is 2 seconds: .!!!![/b] Success rate is 80 percent (4/5), round-trip min/avg/max = 12/40/64 ms pc#traceroute 192.168.1.254 Type escape sequence to abort. Tracing the route to 192.168.1.254 1 192.168.1.10 56 msec * 36 msec //pc[/b]现在走R1[/b]

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