动态LACP 链路聚合

链路聚合将多条物理链路捆绑为一条逻辑链路，可以提升链路带宽、实现链路冗余备份、负载分担流量。
应用场景：交换机之间互联、交换机与服务器对接；IRF/M‑LAG 跨设备聚合，提升网络带宽与可靠性。

H3C设备为例
SW1
system-view
# 创建聚合组1
interface Bridge-Aggregation 1
    # 设置为动态LACP模式
    link-aggregation mode dynamic
    quit
    # 将物理端口加入Eth‑Trunk 1
interface range GigabitEthernet 0/1 to GigabitEthernet 0/2
    port link-aggregation group 1
    undo shutdown
    quit
interface Bridge-Aggregation 1
    # 配置接口为Trunk模式
    port link-mode trunk
    port trunk permit vlan all
SW2
system-view
# 创建聚合组1
interface Bridge-Aggregation 1
    # 设置为动态LACP模式
    link-aggregation mode dynamic
    quit
    # 将物理端口加入Eth‑Trunk 1
interface range GigabitEthernet 0/1 to GigabitEthernet 0/2
     port link-aggregation group 1
     undo shutdown
     quit
interface Bridge-Aggregation 1     
    # 配置接口为Trunk模式
    port link-mode trunk
    port trunk permit vlan all
# 查看聚合组状态
display link-aggregation summary