[TOC]
链路聚合简介
链路聚合:
作用： 增加宽带，同事提供链路冗余
LACP模式支持链路备份 灵活多用
手工负载分担模式： 无法自由自定义配置
链路聚合： 手工负载配置所有活动接口都参与数据的转发分担负载流量
二层链路聚合 eth-trunk
LACP默认不转发，在一条链路断了才进行转发
三层交换机链路聚合
实验： 交换机交换机链路聚合
没捆绑之前状态LW1：
[Huawei]dis stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet0/0/1 ROOT FORWARDING NONE
0 GigabitEthernet0/0/2 ALTE DISCARDING NONE
0 GigabitEthernet0/0/3 ALTE DISCARDING NONE
0 GigabitEthernet0/0/4 ALTE DISCARDING NONE
0 GigabitEthernet0/0/5 DESI FORWARDING NONE
没捆绑之前状态LW2：
[Huawei]dis stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet0/0/1 DESI FORWARDING NONE
0 GigabitEthernet0/0/2 DESI FORWARDING NONE
0 GigabitEthernet0/0/3 DESI FORWARDING NONE
0 GigabitEthernet0/0/4 DESI FORWARDING NONE
0 GigabitEthernet0/0/5 DESI FORWARDING NONE
解释：
通过 dis stp bri 查看端口状态：
DISCARDING 预定端口状态 【阻塞状态】
FORWARDING 转发端口状态 【转发状态】
默认 stp 发现环路会自动阻塞。
二层链路捆绑方法：
模式1: 手工负载分担模式配置[默认就是这个模式]
LSW1：
[Huawei] interface Eth-Trunk 1 # 创建捆绑组
[Huawei-Eth-Trunk1]mode ?
lacp-static Static working mode 灵活分担模式
manual Manual working mode 手工负载分摊模式【默认使用】
[Huawei-Eth-Trunk1]mode manual load-balance #【默认模式，没有配置的情况下就是手工负载分担模式】
加入多个接口配置聚合，都需要使用命令
int g0/0/1 进入接口
Eth-Trunk 1 将接口加入到捆绑组1
第二中聚合方式：
int Eth-Trunk 1
trunkport GigabitEthernet 0/0/1 to 0/0/4 ## 同时将四个接口都放在 trunk 1 链路中组成聚合链路
检查命令：
dis eth-trunk 1 #查看链路聚合接口
[Huawei-Eth-Trunk1]dis eth-trunk 1
Eth-Trunk1's state information is:
WorkingMode: NORMAL Hash arithmetic: According to SIP-XOR-DIP
Least Active-linknumber: 1 Max Bandwidth-affected-linknumber: 8
Operate status: up Number Of Up Port In Trunk: 3
--------------------------------------------------------------------------------
PortName Status Weight
GigabitEthernet0/0/1 Up 1
GigabitEthernet0/0/2 Up 1
GigabitEthernet0/0/4 Up 1
dis stp brief #检查转发状态
[Huawei-Eth-Trunk1]dis stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet0/0/3 ALTE DISCARDING NONE
0 GigabitEthernet0/0/5 DESI FORWARDING NONE
0 Eth-Trunk1 ROOT FORWARDING NONE
取消接口：
[Huawei-Eth-Trunk1]undo trunkport g0/0/5
测试：
冗余性测试：
短小线路检查连通性
捆绑聚合链路也可以做trunk
捆绑聚合链路配置trunk
[Huawei-Eth-Trunk1]port link-type trunk
[Huawei-Eth-Trunk1]port trunk allow-pass vlan all
两台相连，两端都需要打trunk
dis port vlan 检查trunk
负载均衡配置：
[Huawei-Eth-Trunk1]load-balance ?
dst-ip 根据目标IP哈希算法
dst-mac 根据目标MAC哈希算法
src-dst-ip 根据源/目标IP哈希算法实现src-dst-ip [默认负载方法]
src-dst-mac 根据源/目标MAC哈希算法
src-ip 根据源IP哈希算法实现
src-mac 根据源MAC哈希算法
修改负载均衡方式：
注意： 两端交换机或路由器都需要同时修改
如： 都改成 src-mac
int eth-trunk 1
load-balance src-mac
路聚合路由器和路由器
R1：
[Huawei]int Eth-Trunk 1 #进入 trunk1口
[Huawei-Eth-Trunk1]undo portswitch #配置为三层接口
[Huawei-Eth-Trunk1]ip add 12.1.1.1 24 #配置trunk 1 ip地址
[Huawei]int g0/0/1
[Huawei-GigabitEthernet0/0/1]eth-trunk 1 #加入到 trunk 1
[Huawei]int g0/0/0
[Huawei-GigabitEthernet0/0/0]eth-trunk 1 #加入到 trunk 1
R2：
[Huawei]int g0/0/1
[Huawei-GigabitEthernet0/0/1]eth-trunk 1 #加入到 trunk 1
[Huawei]int g0/0/0
[Huawei-GigabitEthernet0/0/1]eth-trunk 1 #加入到 trunk 1
[Huawei]int Eth-Trunk 1 #进入 trunk1口
[Huawei-Eth-Trunk1]undo portswitch #配置为三层接口
[Huawei-Eth-Trunk1]ip add 12.1.1.2 24 #配置trunk 1 ip地址
ping测试：
[Huawei]ping 12.1.1.1
PING 12.1.1.1: 56 data bytes, press CTRL_C to break
Reply from 12.1.1.1: bytes=56 Sequence=1 ttl=255 time=100 ms
Reply from 12.1.1.1: bytes=56 Sequence=2 ttl=255 time=20 ms
Reply from 12.1.1.1: bytes=56 Sequence=3 ttl=255 time=20 ms
Reply from 12.1.1.1: bytes=56 Sequence=4 ttl=255 time=20 ms
Reply from 12.1.1.1: bytes=56 Sequence=5 ttl=255 time=30 ms
检查状态：
<Huawei>dis eth-trunk 1
Eth-Trunk1's state information is:
WorkingMode: NORMAL Hash arithmetic: According to SIP-XOR-DIP
Least Active-linknumber: 1 Max Bandwidth-affected-linknumber: 8
Operate status: up Number Of Up Port In Trunk: 2
--------------------------------------------------------------------------------
PortName Status Weight
GigabitEthernet0/0/0 Up 1
GigabitEthernet0/0/1 Up 1
三层链路聚合 交换机和交换机
思路:
交换机上创建vlan 将接口划入到vlan，其他步骤与上面没啥区别
拓扑：
LSW3:
[Huawei]interface Eth-Trunk 1 #创建捆绑口
[Huawei]int g0/0/1
[Huawei-GigabitEthernet0/0/1]eth-trunk 1
[Huawei]int g0/0/2
[Huawei-GigabitEthernet0/0/1]eth-trunk 1
ip地址配置:
[Huawei]vlan 10
[Huawei]quit
[Huawei]interface Eth-Trunk1
[Huawei-Eth-Trunk1]port link-type access
[Huawei-Eth-Trunk1]port default vlan 10 #将捆绑接口划入到vlan10
[Huawei-Eth-Trunk1]int vlan 10
[Huawei-Vlanif10]ip add 12.1.1.1 24
LSW4:
[Huawei]vlan 10
[Huawei]quit
[Huawei]interface Eth-Trunk 1 #创建捆绑口
[Huawei]int g0/0/1
[Huawei-GigabitEthernet0/0/1]eth-trunk 1
[Huawei]int g0/0/2
[Huawei-GigabitEthernet0/0/2]eth-trunk 1
[Huawei]int Eth-Trunk 1
[Huawei-Eth-Trunk1] port link-type access
[Huawei-Eth-Trunk1] port default vlan 10 #将捆绑接口划入到vlan10
[Huawei-Eth-Trunk1]int vlan 10
[Huawei-Vlanif10]ip add 12.1.1.2 24
三层链路聚合路由器和多层交换机
R1:
[Huawei]interface Eth-Trunk 1
[Huawei]int g0/0/1
[Huawei-GigabitEthernet0/0/1]eth-trunk 1
[Huawei]int g0/0/0
[Huawei-GigabitEthernet0/0/0]eth-trunk 1
SW1：
[Huawei]un in en
[Huawei]vlan 10
Huawei]int Eth-Trunk 1
[Huawei-Eth-Trunk1]trunkport g0/0/1
[Huawei-Eth-Trunk1]trunkport g0/0/2
[Huawei-Eth-Trunk1]quit
[Huawei]int Eth-Trunk 1
[Huawei-Eth-Trunk1]port link-type access
[Huawei-Eth-Trunk1]port default vlan 10
[Huawei-Eth-Trunk1]dis this
#
interface Eth-Trunk1
port link-type access
port default vlan 10
#
return
测试：
AR1:
SW1：
测试ping 然后断掉一个 看是否切换：
LACP模式讲解
LACP模式下 可以自定义备份链路，能发现链路问题，自定义备份链路，手工负载是无法做到的
实例：
SW2：
[Huawei]interface Eth-Trunk 1
[Huawei-Eth-Trunk1]mode lacp-static ##更改为 lacp模式
[Huawei-Eth-Trunk1]trunkport GigabitEthernet 0/0/1 to 0/0/4 #修改接口
[Huawei-Eth-Trunk1]port link-type trunk
[Huawei-Eth-Trunk1]port trunk allow-pass vlan all #trunk接口
SW1：
[Huawei]interface Eth-Trunk 1
[Huawei-Eth-Trunk1]mode lacp-static ##更改为 lacp模式
[Huawei-Eth-Trunk1]trunkport GigabitEthernet 0/0/1 to 0/0/4 #修改接口
[Huawei-Eth-Trunk1]port link-type trunk
[Huawei-Eth-Trunk1]port trunk allow-pass vlan all #改trunk接口
[Huawei-Eth-Trunk1]max active-linknumber 2 # 激活接口的数量(就是几个接口参与转发，这里2个)
[Huawei-Eth-Trunk1]dis eth-trunk 1 #这里能看到两个Selected状态，为激活状态 Unselect 关闭状态
Eth-Trunk1's state information is:
Local:
LAG ID: 1 WorkingMode: STATIC
Preempt Delay: Disabled Hash arithmetic: According to SIP-XOR-DIP
System Priority: 32768 System ID: 4c1f-cc26-5849
Least Active-linknumber: 1 Max Active-linknumber: 2
Operate status: up Number Of Up Port In Trunk: 2
--------------------------------------------------------------------------------
ActorPortName Status PortType PortPri PortNo PortKey PortState Weight
GigabitEthernet0/0/1 Selected[激活] 1GE 32768 2 305 10111100 1
GigabitEthernet0/0/2 Selected[激活] 1GE 32768 3 305 10111100 1
GigabitEthernet0/0/3 Unselect 1GE 32768 4 305 10100000 1
GigabitEthernet0/0/4 Unselect 1GE 32768 5 305 10100000 1
Partner:
--------------------------------------------------------------------------------
ActorPortName SysPri SystemID PortPri PortNo PortKey PortState
GigabitEthernet0/0/1 32768 4c1f-cce2-10ea 32768 2 305 10111100
GigabitEthernet0/0/2 32768 4c1f-cce2-10ea 32768 3 305 10111100
GigabitEthernet0/0/3 32768 4c1f-cce2-10ea 32768 4 305 10110000
GigabitEthernet0/0/4 32768 4c1f-cce2-10ea 32768 5 305 10110000
检查状态：
[Huawei]dis eth-trunk 1
Eth-Trunk1's state information is:
Local:
LAG ID: 1 WorkingMode: STATIC
Preempt Delay: Disabled Hash arithmetic: According to SIP-XOR-DIP
System Priority: 32768 System ID: 4c1f-cce2-10ea
Least Active-linknumber: 1 Max Active-linknumber: 8
Operate status: up Number Of Up Port In Trunk: 4
--------------------------------------------------------------------------------
ActorPortName Status PortType PortPri PortNo PortKey PortState Weight
GigabitEthernet0/0/1 Selected 1GE 32768 2 305 10111100 1
GigabitEthernet0/0/2 Selected 1GE 32768 3 305 10111100 1
GigabitEthernet0/0/3 Selected 1GE 32768 4 305 10111100 1
GigabitEthernet0/0/4 Selected 1GE 32768 5 305 10111100 1
【转发接口】
Partner:
--------------------------------------------------------------------------------
ActorPortName SysPri SystemID PortPri PortNo PortKey PortState
GigabitEthernet0/0/1 32768 4c1f-cc26-5849 32768 2 305 10111100
GigabitEthernet0/0/2 32768 4c1f-cc26-5849 32768 3 305 10111100
GigabitEthernet0/0/3 32768 4c1f-cc26-5849 32768 4 305 10111100
GigabitEthernet0/0/4 32768 4c1f-cc26-5849 32768 5 305 10111100
这样就是被配置为了 lacp模式的链路聚合
可选配置：
最大活跃端口配置
[Huawei]interface Eth-Trunk 1
[Huawei-Eth-Trunk1]max active-linknumber 2 #指定最大活跃接口数量，如果up链路少于两个 则整条捆绑链路down
接口优先级：
[Huawei]int g0/0/1
[Huawei] lacp priority 10 #优先级越小越优先选用
[Huawei]interface Eth-Trunk 1
[Huawei-Eth-Trunk1]mode lacp-static ##更改为 lacp模式
最后修改：2019-06-27 04:33:44
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