LACP模式
是一种国际标准的协商方式，根据自身配置自动形成聚合链路并启动聚合链路收发数据。聚合链路形成以后，LACP负责维护链路状态，在聚合条件发生变化时，自动调整或解散聚合链路。
LACP模式名词解释
—系统优先级
—接口优先级
—成员接口备份
LACP基于标准协议802.3ad
1 二层链路聚合
eth-trunk可以捆绑相同类型的端口，在一个二层交换机上，一般把接入层sw和分布层sw之间的链路做成二层链路聚合。保持端口参数一致。
交换机操作
[sw1]vlan batch 10 20
[sw2]vlan batch 10 20
配置聚合模式
[sw1]interface Eth-Trunk 10 [sw1-Eth-Trunk10]mode lacp-static [sw2]interface Eth-Trunk 10 [sw2-Eth-Trunk10]mode lacp-static
将接口加入聚合组10
[sw1-Eth-Trunk10]trunkport GigabitEthernet 0/0/1 to 0/0/3
[sw2-Eth-Trunk10]trunkport GigabitEthernet 0/0/1 to 0/0/3
查看结果
[sw1-Eth-Trunk10]display eth-trunk 10 Eth-Trunk10's state information is: Local: LAG ID: 10 WorkingMode: STATIC //静态的LACP模式 Preempt Delay: Disabled Hash arithmetic: According to SIP-XOR-DIP System Priority: 32768 System ID: 4c1f-ccc7-4165 Least Active-linknumber: 1 Max Active-linknumber: 8 Operate status: up Number Of Up Port In Trunk: 3 --------------------------------------------------------------------- ActorPortName Status PortType PortPri PortNo PortKey PortState Weight GigabitEthernet0/0/1 Selected 1GE 32768 2 2609 10111100 1 GigabitEthernet0/0/2 Selected 1GE 32768 3 2609 10111100 1 GigabitEthernet0/0/3 Selected 1GE 32768 4 2609 10111100 1 Partner: --------------------------------------------------------------------- ActorPortName SysPri SystemID PortPri PortNo PortKey PortState GigabitEthernet0/0/1 32768 4c1f-cc53-798c 32768 2 2609 10111100 GigabitEthernet0/0/2 32768 4c1f-cc53-798c 32768 3 2609 10111100 GigabitEthernet0/0/3 32768 4c1f-cc53-798c 32768 4 2609 10111100
#max active-linknumber 2 //定义上限活动接口阈值为2
修改了最大活动链路的条目为2，现在有3条链路，所以要1条链路为非活动端口，默认端口号选G0/0/3处于非活动端口
#lacp priority 100 //修改系统LACP优先级，选择主动发起端
[sw1]lacp priority 100 [sw1]display eth-trunk 10 //交换机s1成为了主动端 Eth-Trunk10's state information is: Local: LAG ID: 10 WorkingMode: STATIC Preempt Delay: Disabled Hash arithmetic: According to SIP-XOR-DIP System Priority: 100 System ID: 4c1f-ccc7-4165 Least Active-linknumber: 1 Max Active-linknumber: 8 Operate status: up Number Of Up Port In Trunk: 3 --------------------------------------------------------------------- ActorPortName Status PortType PortPri PortNo PortKey PortState Weight GigabitEthernet0/0/1 Selected 1GE 32768 2 2609 10111100 1 GigabitEthernet0/0/2 Selected 1GE 32768 3 2609 10111100 1 GigabitEthernet0/0/3 Selected 1GE 32768 4 2609 10111100 1 Partner: --------------------------------------------------------------------- ActorPortName SysPri SystemID PortPri PortNo PortKey PortState GigabitEthernet0/0/1 32768 4c1f-cc53-798c 32768 2 2609 10111100 GigabitEthernet0/0/2 32768 4c1f-cc53-798c 32768 3 2609 10111100 GigabitEthernet0/0/3 32768 4c1f-cc53-798c 32768 4 2609 10111100
修改接口LACP优先级，选择那些是活动接口，哪些是非活动接口
#int g 0/0/2
#lacp priority 100
#int g 0/0/3
#lacp priority 100 //接口优先级变为100
#inter eth-trunk 10
#lacp preempt enable //开启抢占功能
#load-balance src-dst-mac //配置负载分担方式