实验拓扑

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基础配置

配置SW1

# 创建vlan，配置链路聚合
[SW1]vlan batch 10 20 
[SW1]int Eth-Trunk 1
[SW1-Eth-Trunk1]trunkport GigabitEthernet 0/0/10 0/0/11
[SW1-Eth-Trunk1]port link-type trunk 
[SW1-Eth-Trunk1]port trunk allow-pass vlan all 
[SW1-Eth-Trunk1]q
# 配置接口类型
[SW1]int g0/0/1 
[SW1-GigabitEthernet0/0/1]port link-type trunk 
[SW1-GigabitEthernet0/0/1]port trunk allow-pass vlan all 
[SW1-GigabitEthernet0/0/1]int g0/0/2
[SW1-GigabitEthernet0/0/2] port link-type trunk
[SW1-GigabitEthernet0/0/2] port trunk allow-pass vlan 2 to 4094
[SW1-GigabitEthernet0/0/2]q

配置SW2

# SW2创建vlan，配置链路聚合
[SW2]vlan batch 10 20 
[SW2]int Eth-Trunk 1
[SW2-Eth-Trunk1]trunkport GigabitEthernet 0/0/10 0/0/11
[SW2-Eth-Trunk1]port link-type trunk 
[SW2-Eth-Trunk1]port trunk allow-pass vlan all 
[SW2-Eth-Trunk1]q
# SW2配置接口类型
[SW2]int g0/0/1 
[SW2-GigabitEthernet0/0/1]port link-type trunk 
[SW2-GigabitEthernet0/0/1]port trunk allow-pass vlan all 
[SW2-GigabitEthernet0/0/1]int g0/0/2
[SW2-GigabitEthernet0/0/2] port link-type trunk
[SW2-GigabitEthernet0/0/2] port trunk allow-pass vlan 2 to 4094
[SW2-GigabitEthernet0/0/2]q

配置SW3、SW4

# SW3配置
[SW3]vlan ba 10 20
[SW3]int g0/0/2
[SW3-GigabitEthernet0/0/2]port link-type trunk
[SW3-GigabitEthernet0/0/2] port trunk allow-pass vlan 2 to 4094
[SW3-GigabitEthernet0/0/2]int g0/0/
[SW3-GigabitEthernet0/0/3]port link-type trunk
[SW3-GigabitEthernet0/0/3] port trunk allow-pass vlan 2 to 4094
[SW3-GigabitEthernet0/0/3]q
[SW3]int g0/0/1
[SW3-GigabitEthernet0/0/1]port link-type access 
[SW3-GigabitEthernet0/0/1]port default vlan 10

# SW4配置
[SW4]vlan ba 10 20
[SW4]int g0/0/2
[SW4-GigabitEthernet0/0/2]port link-type trunk
[SW4-GigabitEthernet0/0/2] port trunk allow-pass vlan 2 to 4094
[SW4-GigabitEthernet0/0/2]int g0/0/3
[SW4-GigabitEthernet0/0/3]port link-type trunk
[SW4-GigabitEthernet0/0/3] port trunk allow-pass vlan 2 to 409
[SW4]int g0/0/1
[SW4-GigabitEthernet0/0/1]port link-type access 
[SW4-GigabitEthernet0/0/1]port default vlan 20

AR1配置

[AR1]int g0/0/0
[AR1-GigabitEthernet0/0/0]ip ad 10.1.1.1 24
[AR1-GigabitEthernet0/0/0]q
[AR1]ip route-static 0.0.0.0 0 10.1.1.254  //配置静态路由，否则无法互通

配置VRRP

SW1配置

# 配置vlanif的IP地址，配置VRRP
[SW1]int Vlanif 10
[SW1-Vlanif10]ip ad 10.1.1.2 24
[SW1-Vlanif10]vrrp vrid 1 virtual-ip 10.1.1.254  //配置VRID 1的虚拟网关为10.1.1.254
[SW1-Vlanif10]vrrp vrid 1 priority 120  //配置VRID 1的优先级
[SW1-Vlanif10]q
[SW1]int Vlanif 20
[SW1-Vlanif20]ip ad 20.1.1.2 24
[SW1-Vlanif20]vrrp vrid 2 virtual-ip 20.1.1.254  //配置VRID 2的虚拟网关为20.1.1.254

SW2配置

[SW2]int Vlanif 10
[SW2-Vlanif10]ip ad 10.1.1.3 24
[SW2-Vlanif10]vrrp vrid 1 virtual-ip 10.1.1.254
[SW2-Vlanif10]q
[SW2]int Vlanif 20
[SW2-Vlanif20]ip ad 20.1.1.3 24
[SW2-Vlanif20]vrrp vrid 2 virtual-ip 20.1.1.254
[SW2-Vlanif20]vrrp vrid  2 priority 120  //配置VRID 2的优先级为120

实验结果

当SW2down掉之后（down之前记得save），VRRP可以迅速切换备用网关，进行数据转发，当SW2恢复时，可以迅速切换会主交换机

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拓展

vrrp vrid 1 preempt-mode timer delay 20修改抢占时延

vrrp vrid 1 track interface GigabitEthernet0/0/1 reduced 20配置上行接口down后，自身优先级降20

以上内容均属原创，如有不详或错误，敬请指出。

本文作者： 坏坏

本文链接： https://blog.csdn.net/qq_45668124/article/details/106016943