什么是核心交换机的链路聚合、冗余、堆叠、热备份 _生活百科

我们前面曾多次提到对于核心交换机的选择，大家可能对于核心交换机的背板带宽、包转发率都已经有所了解，然而核心交换机主要选择
portant; overflow-wrap: break-word !important;">我portant; overflow-wrap: break-word !important;">们前面曾多次提到对于核心交换机的选择，大家可能对于核心交换机的背板带宽、包转发率都已经有所了解，然而核心交换机主要选择并不止这些参数，还需要看链路聚合、冗余、堆叠、热备份等这些功能，这些功能非常重要，决定了核心交换机在实际应用中的性能、效率、稳定性等，我们一起来了解下。【什么是核心交换机的链路聚合、冗余、堆叠、热备份】portant; overflow-wrap: break-word !important; font-size: 16px;">一、链路聚合
portant; overflow-wrap: break-word !important;">是将两个或更多数据信道结合成一个单个的信道，该信道以一个单个的更高带宽的逻辑链路出现。链路聚合一般用来连接一个或多个带宽需求大的设备，例如连接骨干网络的服务器或服务器群。portant; overflow-wrap: break-word !important;">它可以用于扩展链路带宽，提供更高的连接可靠性portant; overflow-wrap: break-word !important;"> 。
portant; overflow-wrap: break-word !important;">1、举例portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">公司有2层楼，分别运行着不同的业务，本来两个楼层的网络是分开的，但都是一家公司难免会有业务往来，这时我们就可以打通两楼之前的网络，使具有相互联系的部门之间高速通信。
portant; overflow-wrap: break-word !important;">如下图：
portant; overflow-wrap: break-word !important;">如上图所示， SwitchA和SwitchB通过以太链路分别都连接VLAN10和VLAN20的网络，且SwitchA和SwitchB之间有较大的数据流量。portant; overflow-wrap: break-word !important;">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。portant; overflow-wrap: break-word !important;">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。
portant; overflow-wrap: break-word !important;">创建Eth-Trunk接口并加入成员接口，实现增加链路带宽， 2台交换机分别配置Eth-Trunk1 分别将需要通信的3条线路的端口加入Eth-Trunk1 ，设置端口portant; overflow-wrap: break-word !important;">trunk ，答应相应的vlan通过；portant; overflow-wrap: break-word !important;">这样两楼的网络就可以正常通信了。
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66);">portant; overflow-wrap: break-word !important;">2、实现配置步骤：portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">在SwitchA上创建Eth-Trunk1并配置为LACP模式。portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">SwitchB配置过程与SwitchA类似，不再赘述portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">HUAWEI system-viewportant; overflow-wrap: break-word !important;">[HUAWEI] sysname SwitchAportant; overflow-wrap: break-word !important;">[SwitchA] interface eth-trunk 1portant; overflow-wrap: break-word !important;">[SwitchA-Eth-Trunk1] mode lacpportant; overflow-wrap: break-word !important;">[SwitchA-Eth-Trunk1] quitportant; overflow-wrap: break-word !important;">配置SwitchA上的成员接口加入Eth-Trunk 。portant; overflow-wrap: break-word !important;">SwitchB配置过程与SwitchA类似，不再赘述portant; overflow-wrap: break-word !important;">[SwitchA] interface gigabitethernet 0/0/1portant; overflow-wrap: break-word !important;">[SwitchA-GigabitEthernet0/0/1] eth-trunk 1portant; overflow-wrap: break-word !important;">[SwitchA-GigabitEthernet0/0/1] quitportant; overflow-wrap: break-word !important;">[SwitchA] interface gigabitethernet 0/0/2portant; overflow-wrap: break-word !important;">[SwitchA-GigabitEthernet0/0/2] eth-trunk 1portant; overflow-wrap: break-word !important;">[SwitchA-GigabitEthernet0/0/2] quitportant; overflow-wrap: break-word !important;">[SwitchA] interface gigabitethernet 0/0/3portant; overflow-wrap: break-word !important;">[SwitchA-GigabitEthernet0/0/3] eth-trunk 1portant; overflow-wrap: break-word !important;">[SwitchA-GigabitEthernet0/0/3] quitportant; overflow-wrap: break-word !important;">在SwitchA上配置系统优先级为100 ，使其成为LACP主动端portant; overflow-wrap: break-word !important;">[SwitchA] lacp priority 100portant; overflow-wrap: break-word !important;">在SwitchA上配置活动接口上限阈值为2portant; overflow-wrap: break-word !important;">[SwitchA] interface eth-trunk 1portant; overflow-wrap: break-word !important;">[SwitchA-Eth-Trunk1] max active-linknumber 2portant; overflow-wrap: break-word !important;">[SwitchA-Eth-Trunk1] quitportant; overflow-wrap: break-word !important;">在SwitchA上配置接口优先级确定活动链路portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">[SwitchA] interface gigabitethernet 0/0/1portant; overflow-wrap: break-word !important;">[SwitchA-GigabitEthernet0/0/1] lacp priority 100portant; overflow-wrap: break-word !important;">[SwitchA-GigabitEthernet0/0/1] quitportant; overflow-wrap: break-word !important;">[SwitchA] interface gigabitethernet 0/0/2portant; overflow-wrap: break-word !important;">[SwitchA-GigabitEthernet0/0/2] lacp priority 100portant; overflow-wrap: break-word !important;">[SwitchA-GigabitEthernet0/0/2] quit