链路聚合：顾名思义，就是将多条链路聚合成一条链路，这条链路的带宽等于所有有效链路的总和；属于可靠性技术。

主要作用是：提高带宽，增加可靠性

在eNSP中，交换机是只可以启用二层的链路聚合，路由器中则可以将链路切换到第三层；

interface Eth-trunk [id]

//创建聚合口，并进入聚合口接口视图，id范围0~63，id只在本设备中起作用

例如：interface Eth-trunk 0

mode lacp-static

//使用静态lacp模式

命令使用视图：链路聚合口接口视图

例如：[Huawei-Eth-Trunk1]mode lacp-static

trunkport [接口类型Ethernet | GigabitEthernet] [接口id] [to [接口id]]

//将接口加入聚合链路中

命令使用视图：链路聚合口接口视图

例如：[Huawei-Eth-Trunk1]trunkport GigabitEthernet 0/0/1 to 0/0/3

eth-trunk [聚合口-id]

//将接口加入聚合链路中

命令使用视图：交换机接口视图

例如：[Huawei-GigabitEthernet0/0/1]eth-trunk 1

max active-linknumber [1-8]

//配置有效链路最大数量，当聚合链路超过最大数时，将多余出来的链路作为备份链路，当有效链路中有链路down掉后，则从备用链路中选取出新的链路来替代down的链路；

命令使用视图：链路聚合口接口视图

例如：[Huawei-Eth-Trunk1]max active-linknumber 3

load-balance [负载均衡模式]

//配置链路的负载均衡模式

负载均衡模式

src-mac

源mac地址

dst-mac

目的mac地址

src-ip

源ip地址

dst-ip

目的ip地址

src-dst-mac

源和目的mac地址

src-dst-ip

源和目的ip地址（默认配置）

命令使用视图：链路聚合口接口视图

例如：[Huawei-Eth-Trunk1]load-balance src-dst-mac

undo portswitch

//切换三层路由模式

命令使用视图：链路聚合口接口视图

例如：[Huawei-Eth-Trunk1]undo portswitch

配置注意事项：配置聚合链路模式前不可以先添加物理接口，添加物理接口后才可以配置接口模式及相关参数，否则会造成添加物理接口失败！

本篇只讲关于Eth-trunk的配置，本实验中不涉及三层的链路聚合

其他相关配置：https://blog.csdn.net/weixin_46678521/article/details/126472140

S1

[S1]interface Eth-trunk 1

[S1-Eth-Trunk1]trunkport g 0/0/1 to 0/0/2

Info: This operation may take a few seconds. Please wait for a moment...done.

[S1-Eth-Trunk1]port link-type trunk

[S1-Eth-Trunk1]port trunk allow-pass vlan 10 100

[S1-Eth-Trunk1]load-balance src-dst-mac

[S1-Eth-Trunk1]quit

S2

[S2]interface Eth-trunk 1

[S2-Eth-Trunk1]trunkport g 0/0/1 to 0/0/2

Info: This operation may take a few seconds. Please wait for a moment...done.

[S2-Eth-Trunk1]port link-type trunk

[S2-Eth-Trunk1]port trunk allow-pass vlan 20 100

[S2-Eth-Trunk1]load-balance src-dst-mac

[S2-Eth-Trunk1]quit

S3

[S3]interface Eth-trunk 1

[S3-Eth-Trunk1]trunkport g 0/0/1 to 0/0/2

Info: This operation may take a few seconds. Please wait for a moment...done.

[S3-Eth-Trunk1]port link-type trunk

[S3-Eth-Trunk1]port trunk allow-pass vlan 30 100

[S3-Eth-Trunk1]load-balance src-dst-mac

[S3-Eth-Trunk1]quit

S4

[S4]interface Eth-trunk 1

[S4-Eth-Trunk1]trunkport g 0/0/1 to 0/0/2

Info: This operation may take a few seconds. Please wait for a moment...done.

[S4-Eth-Trunk1]port link-type trunk

[S4-Eth-Trunk1]port trunk allow-pass vlan 40 100

[S4-Eth-Trunk1]load-balance src-dst-mac

[S4-Eth-Trunk1]quit

SW1

[SW1]interface Eth-trunk 1

[SW1-Eth-Trunk1]trunkport g 0/0/11 to 0/0/12

Info: This operation may take a few seconds. Please wait for a moment...done.

[SW1-Eth-Trunk1]port link-type trunk

[SW1-Eth-Trunk1]port trunk allow-pass vlan 10 100

[SW1-Eth-Trunk1]load-balance src-dst-mac

[SW1-Eth-Trunk1]quit

[SW1]interface Eth-trunk 2

[SW1-Eth-Trunk2]trunkport g 0/0/13 to 0/0/14

Info: This operation may take a few seconds. Please wait for a moment...done.

[SW1-Eth-Trunk2]port link-type trunk

[SW1-Eth-Trunk2]port trunk allow-pass vlan 20 100

[SW1-Eth-Trunk2]load-balance src-dst-mac

[SW1-Eth-Trunk2]quit

[SW1]interface Eth-trunk 3

[SW1-Eth-Trunk3]trunkport g 0/0/23 to 0/0/24

Info: This operation may take a few seconds. Please wait for a moment...done.

[SW1-Eth-Trunk3]port link-type trunk

[SW1-Eth-Trunk3]port trunk allow-pass vlan  6 100

[SW1-Eth-Trunk3]load-balance src-dst-ip

[SW1-Eth-Trunk3]quit

SW2

[SW2]interface Eth-trunk 1

[SW2-Eth-Trunk1]trunkport g 0/0/11 to 0/0/12

Info: This operation may take a few seconds. Please wait for a moment...done.

[SW2-Eth-Trunk1]port link-type trunk

[SW2-Eth-Trunk1]port trunk allow-pass vlan 30 100

[SW2-Eth-Trunk1]load-balance src-dst-mac

[SW2-Eth-Trunk1]quit

[SW2]interface Eth-trunk 2

[SW2-Eth-Trunk2]trunkport g 0/0/13 to 0/0/14

Info: This operation may take a few seconds. Please wait for a moment...done.

[SW2-Eth-Trunk2]port link-type trunk

[SW2-Eth-Trunk2]port trunk allow-pass vlan 40 100

[SW2-Eth-Trunk2]load-balance src-dst-mac

[SW2-Eth-Trunk2]quit

[SW2]interface Eth-trunk 3

[SW2-Eth-Trunk3]trunkport g 0/0/23 to 0/0/24

Info: This operation may take a few seconds. Please wait for a moment...done.

[SW2-Eth-Trunk3]port link-type trunk

[SW2-Eth-Trunk3]port trunk allow-pass vlan  6 100

[SW2-Eth-Trunk3]load-balance src-dst-ip

[SW2-Eth-Trunk3]quit

LSW1

[LSW1]interface Eth-trunk 1

[LSW1-Eth-Trunk1]trunkport g 0/0/23  to 0/0/24

Info: This operation may take a few seconds. Please wait for a moment...done.

[LSW1-Eth-Trunk1]port link-type trunk

[LSW1-Eth-Trunk1]port trunk allow-pass vlan 2 to 5 7

[LSW1-Eth-Trunk1]load-balance src-dst-mac

[LSW1-Eth-Trunk1]quit

LSW2

[LSW2]interface Eth-trunk 1

[LSW2-Eth-Trunk1]trunkport g 0/0/23  to 0/0/24

Info: This operation may take a few seconds. Please wait for a moment...done.

[LSW2-Eth-Trunk1]port link-type trunk

[LSW2-Eth-Trunk1]port trunk allow-pass vlan 2 to 5 7

[LSW2-Eth-Trunk1]load-balance src-dst-mac

[LSW2-Eth-Trunk1]quit