如何使用链路聚合技术，提高交换机网络的可靠性和可用性？

互推小编 2023-06-01

网络通信中，链路聚合技术是一项重要的技术手段，它能够将多条物理链路合并为一条逻辑链路，提高带宽利用率和网络可靠性。在企业网络中，使用链路聚合技术已经成为了一种常见的做法，而交换机则是实现链路聚合的关键设备之一。在本文中，我将介绍如何在交换机上配置链路聚合功能，帮助您优化网络性能和提高网络可靠性。以华为交换机为例，详细讲解如何进行链路聚合的配置，让您轻松了解该技术。

网络拓扑

组网需求

1、SwitchA和SwitchB通过以太链路分别都连接VLAN10和VLAN20的网络，且SwitchA和Swi

tchB之间有较大的数据流量。

2、用户希望SwitchA和SwitchB之间能够提供较大的链路带宽来使相同VLAN间互相通信。同

时用户也希望能够提供一定的冗余度，保证数据传输和链路的可靠性。

通过负载分担模式链路聚合

操作步骤

SwitchA 配置

<Huawei>sys Enter system view, return user view with Ctrl+Z. [Huawei]undo inf [Huawei]undo info-center en Info: Information center is disabled. [Huawei]sysname SwitchA [SwitchA] [SwitchA] #创建Eth-Trunk接口并加入成员接口 [SwitchA]int [SwitchA]interface eth [SwitchA]interface Eth-Trunk 1 [SwitchA-Eth-Trunk1]tr [SwitchA-Eth-Trunk1]trunkport [SwitchA-Eth-Trunk1]tr [SwitchA-Eth-Trunk1]trun [SwitchA-Eth-Trunk1]trunkport giga [SwitchA-Eth-Trunk1]trunkport GigabitEthernet 0/0/1 to 0/0/3 #创建vlan 并将相关接口加入vlan [SwitchA] [SwitchA]int [SwitchA]interface et [SwitchA]vlan bat [SwitchA]vlan batch 10 20 Info: This operation may take a few seconds. Please wait for a moment...done. [SwitchA] [SwitchA] [SwitchA]int [SwitchA]interface gi [SwitchA]interface GigabitEthernet 0/0/4 [SwitchA-GigabitEthernet0/0/4]port link [SwitchA-GigabitEthernet0/0/4]port link-t [SwitchA-GigabitEthernet0/0/4]port link-type tr [SwitchA-GigabitEthernet0/0/4]port link-type trunk [SwitchA-GigabitEthernet0/0/4]prot [SwitchA-GigabitEthernet0/0/4]port tr [SwitchA-GigabitEthernet0/0/4]port trunk al [SwitchA-GigabitEthernet0/0/4]port trunk allow-pass vlan 10 [SwitchA-GigabitEthernet0/0/4] [SwitchA-GigabitEthernet0/0/4]q [SwitchA]int gi 0/0/5 [SwitchA-GigabitEthernet0/0/5]por [SwitchA-GigabitEthernet0/0/5]port link [SwitchA-GigabitEthernet0/0/5]port link-t [SwitchA-GigabitEthernet0/0/5]port link-type tr [SwitchA-GigabitEthernet0/0/5]port link-type trunk [SwitchA-GigabitEthernet0/0/5]port tr [SwitchA-GigabitEthernet0/0/5]port trunk al [SwitchA-GigabitEthernet0/0/5]port trunk allow-pass vl [SwitchA-GigabitEthernet0/0/5]port trunk allow-pass vlan 20 [SwitchA-GigabitEthernet0/0/5]q [SwitchA] # 配置Eth-Trunk1接口允许VLAN10和VLAN20通过 [SwitchA] [SwitchA]int [SwitchA]interface et [SwitchA]interface Eth-Trunk 1 [SwitchA-Eth-Trunk1]port link-type trunk [SwitchA-Eth-Trunk1]port trunk allow-pass vlan 10 20 [SwitchA-Eth-Trunk1] #配置Eth-Trunk1的负载分担方式 [SwitchA-Eth-Trunk1] [SwitchA-Eth-Trunk1]lo [SwitchA-Eth-Trunk1]load-balance src [SwitchA-Eth-Trunk1]load-balance src-? src-dst-ip src-dst-mac src-ip src-mac [SwitchA-Eth-Trunk1]load-balance src-ds [SwitchA-Eth-Trunk1]load-balance src-dst-? src-dst-ip src-dst-mac [SwitchA-Eth-Trunk1]load-balance src-dst-m [SwitchA-Eth-Trunk1]load-balance src-dst-mac ? <cr> [SwitchA-Eth-Trunk1]load-balance src-dst-mac [SwitchA-Eth-Trunk1] [SwitchA-Eth-Trunk1]qu [SwitchA]

SwitchB 配置

<Huawei>sys Enter system view, return user view with Ctrl+Z. [Huawei]undo inf [Huawei]undo info-center en Info: Information center is disabled. [Huawei] [Huawei]sysname SwitchB [SwitchB] #创建Eth-Trunk接口并加入成员接口 [SwitchB]interface Eth-Trunk 1 [SwitchB-Eth-Trunk1]trunk [SwitchB-Eth-Trunk1]trunkport giga [SwitchB-Eth-Trunk1]trunkport GigabitEthernet 0/0/1 to 0/0/3 Info: This operation may take a few seconds. Please wait for a moment...done. [SwitchB-Eth-Trunk1] [SwitchB-Eth-Trunk1]dis th # interface Eth-Trunk1 # return [SwitchB-Eth-Trunk1] [SwitchB-Eth-Trunk1]q [SwitchB] #创建vlan，并将相关接口加入vlan [SwitchB] [SwitchB]vlan bat [SwitchB]vlan batch 10 20 Info: This operation may take a few seconds. Please wait for a moment...done. [SwitchB] [SwitchB]int [SwitchB]interface gi [SwitchB]interface GigabitEthernet 0/0/4 [SwitchB-GigabitEthernet0/0/4]port link-type trunk [SwitchB-GigabitEthernet0/0/4]port trunk allow-pass vlan 10 [SwitchB-GigabitEthernet0/0/4] [SwitchB-GigabitEthernet0/0/4]q [SwitchB] [SwitchB]int GigabitEthernet 0/0/5 [SwitchB-GigabitEthernet0/0/5]port link-type trunk [SwitchB-GigabitEthernet0/0/5]port trunk allow-pass vlan 20 [SwitchB-GigabitEthernet0/0/5]q [SwitchB] # 配置Eth-Trunk1接口允许VLAN10和VLAN20通过 [SwitchB]int [SwitchB]interface et [SwitchB]interface Eth-Trunk 1 [SwitchB-Eth-Trunk1]port li [SwitchB-Eth-Trunk1]port link-type tr [SwitchB-Eth-Trunk1]port link-type trunk [SwitchB-Eth-Trunk1]port tr [SwitchB-Eth-Trunk1]port trunk vl [SwitchB-Eth-Trunk1]port trunk al [SwitchB-Eth-Trunk1]port trunk allow-pass vl [SwitchB-Eth-Trunk1]port trunk allow-pass vlan 10 20 [SwitchB-Eth-Trunk1] #配置Eth-Trunk1的负载分担方式 [SwitchB-Eth-Trunk1] [SwitchB-Eth-Trunk1]lo [SwitchB-Eth-Trunk1]load-balance src [SwitchB-Eth-Trunk1]load-balance src-ds [SwitchB-Eth-Trunk1]load-balance src-dst-m [SwitchB-Eth-Trunk1]load-balance src-dst-mac [SwitchB-Eth-Trunk1]q [SwitchB] [SwitchB]