13.21-三层链路聚合

一、路由器和路由器聚合

负载均衡+冗余，断掉任何一条线缆，通信不受影响

[R1]int Eth-Trunk 1
[R1-Eth-Trunk1]undo portswitch 
[R1-Eth-Trunk1]ip add 12.1.1.1 24
[R1-Eth-Trunk1]int g0/0/0
[R1-GigabitEthernet0/0/0]eth-trunk 1
[R1-GigabitEthernet0/0/0]int g0/0/1
[R1-GigabitEthernet0/0/1]eth-trunk 1

[R1-Eth-Trunk1]undo portswitch #将二层逻辑接口提升为三层接口

调式命令：

[R1]dis ip int brief

同样的配置R2

[R2]int Eth-Trunk 1
[R2-Eth-Trunk1]undo portswitch 
[R2-Eth-Trunk1]ip add 12.1.1.2 24
[R2-Eth-Trunk1]int g0/0/0	
[R2-GigabitEthernet0/0/0]eth-trunk 1
[R2-GigabitEthernet0/0/0]int g0/0/1 
[R2-GigabitEthernet0/0/1]eth-trunk 1

验证测试

<R1>ping -c 10000 12.1.1.2 #路由器不能ping -t，-c 包数量

ping测试的同时断开一条线缆，网络不受影响

二、多层交换机与多层交换机聚合

SW1配置命令：

[SW1]vlan 10
[SW1-vlan10]qu
[SW1]int Eth-Trunk 1
[SW1-Eth-Trunk1]port link-ty access 
[SW1-Eth-Trunk1]port default vlan 10
[SW1-Eth-Trunk1]int g0/0/1
[SW1-GigabitEthernet0/0/1]eth-trunk 1
[SW1-GigabitEthernet0/0/1]int g0/0/2	
[SW1-GigabitEthernet0/0/2]eth-trunk 1
[SW1-GigabitEthernet0/0/2]int vlan 10
[SW1-Vlanif10]ip add 12.1.1.1 24

同样的配置SW2，略

测试验证：

[SW1]ping -c 10000 12.1.1.2

三、路由器和多层交换机聚合

路由器R1配置：

[R1]int Eth-Trunk 1
[R1-Eth-Trunk1]undo portswitch 
[R1-Eth-Trunk1]ip add 12.1.1.1 24
[R1-Eth-Trunk1]int g0/0/0
[R1-GigabitEthernet0/0/0]e 1
[R1-GigabitEthernet0/0/0]int g0/0/1 
[R1-GigabitEthernet0/0/1]e 1

交换机SW1配置：

[SW1]vlan 10
[SW1-vlan10]qu
[SW1]int Eth-Trunk 1
[SW1-Eth-Trunk1]port link-type access 
[SW1-Eth-Trunk1]port default vlan 10
[SW1-Eth-Trunk1]int g0/0/1
[SW1-GigabitEthernet0/0/1]eth-trunk 1
[SW1-GigabitEthernet0/0/1]int g0/0/2
[SW1-GigabitEthernet0/0/2]eth-trunk 1
[SW1-GigabitEthernet0/0/2]int vlan 10
[SW1-Vlanif10]ip add 12.1.1.2 24

测试验证：

[R1]ping -c 10000 12.1.1.2

*链路聚合成功完成后，任意断开任何一条线缆网络都不会中断