华为eNSP——VRRP实验

VRRP：（公有协议）

在多个路由器之间运行，

可以虚拟出一个或者多个网关IP地址（虚拟路由器）；

从而实现内网不同网段之间的互通

VRRP的工作过程：

1、运行VRRP的“多个”路由器之间通过VRRP报文的交互，从而选择出一个最牛的路由器，作为Master路由器，以后就用来这个设备来转发数据包；

2、Master路由器，仅仅只有一个，其他的路由器称之为backup路由器；/3、同时，Master和Backup路由器，会产生一个虚拟的路由器，也就是一个虚拟的IP地址

 

 

实验步骤

SW1

u t m
Info: Current terminal monitor is off.    
system-view 
Enter system view, return user view with Ctrl+Z.    
[Huawei]sysname SW3
[SW3]v b 10 20
Info: This operation may take a few seconds. Please wait for a moment...done.
[SW3]int e0/0/1
[SW3-Ethernet0/0/1]p l a 
[SW3-Ethernet0/0/1]p d v 10
[SW3-Ethernet0/0/1]un sh
Info: Interface Ethernet0/0/1 is not shutdown.
[SW3-Ethernet0/0/1]int e0/0/2
[SW3-Ethernet0/0/2]p l a
[SW3-Ethernet0/0/2]p d v 20
[SW3-Ethernet0/0/2]un sh
Info: Interface Ethernet0/0/2 is not shutdown.
[SW3-Ethernet0/0/2]int g0/0/1
[SW3-GigabitEthernet0/0/1]p l t 
[SW3-GigabitEthernet0/0/1]p t a v 10 20
[SW3-GigabitEthernet0/0/1]un sh
Info: Interface GigabitEthernet0/0/1 is not shutdown.
[SW3-GigabitEthernet0/0/1]int g0/0/2
[SW3-GigabitEthernet0/0/2]p l t
[SW3-GigabitEthernet0/0/2]p t a v 10 20
[SW3-GigabitEthernet0/0/2]un sh
Info: Interface GigabitEthernet0/0/2 is not shutdown.
[SW3-GigabitEthernet0/0/2] 

 

RSW1

u t m
Info: Current terminal monitor is off.    
system-view 
Enter system view, return user view with Ctrl+Z.    
[Huawei]sysname RSW1
[RSW1]v b 10 20 100
Info: This operation may take a few seconds. Please wait for a moment...done.
[RSW1]int g0/0/2
[RSW1-GigabitEthernet0/0/2]p l t
[RSW1-GigabitEthernet0/0/2]p t a v 10 20
[RSW1-GigabitEthernet0/0/2]un sh
Info: Interface GigabitEthernet0/0/2 is not shutdown.
[RSW1-GigabitEthernet0/0/2]int g0/0/1
[RSW1-GigabitEthernet0/0/1]p l a 
[RSW1-GigabitEthernet0/0/1]p d v 100
[RSW1-GigabitEthernet0/0/1]un sh
Info: Interface GigabitEthernet0/0/1 is not shutdown.
[RSW1-GigabitEthernet0/0/1]q    
[RSW1]int Vlanif 10
[RSW1-Vlanif10]ip add 192.168.10.10 24
[RSW1-Vlanif10]vrrp vrid 1 virtual-ip 192.168.10.1
[RSW1-Vlanif10]vrrp vrid 1 priority 120    
[RSW1-Vlanif10]vrrp vrid 1 track interface GigabitEthernet 0/0/1
[RSW1-Vlanif10]vrrp vrid 1 track interface GigabitEthernet 0/0/2    
[RSW1-Vlanif10]q    
[RSW1]int Vlanif 20
[RSW1-Vlanif20]ip add 192.168.20.10 24
[RSW1-Vlanif20]vrrp vrid 2 virtual-ip 192.168.20.1
[RSW1-Vlanif20]vrrp vrid 2 priority 115
[RSW1-Vlanif20]q    
[RSW1]int Vlanif 100
[RSW1-Vlanif100]ip add 11.0.0.2 30    
[RSW1-Vlanif100]q    
[RSW1]ip route-static 0.0.0.0 0.0.0.0 11.0.0.1
[RSW1]int g0/0/1    
[RSW1-GigabitEthernet0/0/1]shutdown 
[RSW1-GigabitEthernet0/0/1]un sh

RSW2

u t m
Info: Current terminal monitor is off.    
system-view 
Enter system view, return user view with Ctrl+Z.    
[Huawei]sysname RSW2
[RSW2]v b 10 20 100
Info: This operation may take a few seconds. Please wait for a moment...done.
[RSW2]int g0/0/2
[RSW2-GigabitEthernet0/0/2]p l t
[RSW2-GigabitEthernet0/0/2]p t a v 10 20
[RSW2-GigabitEthernet0/0/2]un sh
Info: Interface GigabitEthernet0/0/2 is not shutdown.
[RSW2-GigabitEthernet0/0/2]int g0/0/1
[RSW2-GigabitEthernet0/0/1]p l a
[RSW2-GigabitEthernet0/0/1]p d v 100
[RSW2-GigabitEthernet0/0/1]un sh
Info: Interface GigabitEthernet0/0/1 is not shutdown.
[RSW2-GigabitEthernet0/0/1]q    
[RSW2]int Vlanif 10
[RSW2-Vlanif10]ip add 192.168.10.20 24
[RSW2-Vlanif10]vrrp vrid 1 virtual-ip 192.168.10.1
[RSW2-Vlanif10]vrrp vrid 1 priority 115
[RSW2-Vlanif10]q    
[RSW2]int Vlanif 20
[RSW2-Vlanif20]ip add 192.168.20.20 24
[RSW2-Vlanif20]vrrp vrid 2 virtual-ip 192.168.20.1
[RSW2-Vlanif20]vrrp vrid 2 priority 120    
[RSW2-Vlanif20]vrrp vrid 2 track interface GigabitEthernet 0/0/1
[RSW2-Vlanif20]vrrp vrid 2 track interface GigabitEthernet 0/0/2
[RSW2-Vlanif20]q    
[RSW2]int Vlanif 100
[RSW2-Vlanif100]ip add 12.0.0.2 30
[RSW2-Vlanif100]q
[RSW2]ip route-static 0.0.0.0 0.0.0.0 12.0.0.1

 

R1

u t m
Info: Current terminal monitor is off.    
system-view 
Enter system view, return user view with Ctrl+Z.    
[Huawei]sysname R1
[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 11.0.0.1 30
[R1-GigabitEthernet0/0/0]un sh
Info: Interface GigabitEthernet0/0/0 is not shutdown.
[R1-GigabitEthernet0/0/0]int g0/0/1
[R1-GigabitEthernet0/0/1]ip add 12.0.0.1 30
[R1-GigabitEthernet0/0/1]un sh
Info: Interface GigabitEthernet0/0/1 is not shutdown.
[R1-GigabitEthernet0/0/1]int loo 0
[R1-LoopBack0]ip add 1.1.1.1 24
[R1-LoopBack0]q    
[R1]ip route-static 192.168.10.0 24 11.0.0.2    
[R1]ip route-static 192.168.10.0 24 12.0.0.2 preference 70
[R1]ip route-static 192.168.20.0 24 12.0.0.2    
[R1]ip route-static 192.168.20.0 24 11.0.0.2 preference 70

总结：PC1和PC2 是互通的，当其中三层交换机（RSW1）关闭一个接口时同样会有备用线路联通。

关闭接口后，

首先抓包查看，如下图：

当RSW1上的g0/0/1接口关闭（接口由绿变红）时，优先级会减10，如下图:

 

此时，优先级为115的192.168.10.20 会抢占，如下图：