华为链路聚合原理及配置-北京赛维博信科技发展有限公司

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来源:本人摘自网络，如有侵权请联系删除 | 作者:毛豆 | 发布时间: 2024-01-15 | 1093 次浏览 | 分享到:

华为链路聚合（Link Aggregation）是一种将多个物理链路捆绑成一个逻辑链路的技术，用于提高网络带宽和冗余性。华为设备支持两种链路聚合模式：手工模式和LACP模式。

在手工模式下，管理员手动配置每个接口的聚合组号，并将这些接口捆绑成一个逻辑链路。链路聚合的配置在设备间不会进行协商和协议交换。在手工模式下，管理员手动配置每个接口的聚合组号，并将这些接口捆绑成一个逻辑链路。链路聚合的配置在设备间不会进行协商和协议交换。

[LSW1]display 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

查看链路状态：1条链路转发状态，2条链路阻塞状态（这里可以学习stp协议的问题）

手工模式配置

启用Eth-Trunk 1

[LSW1]interface Eth-Trunk 1

[LSW1-Eth-Trunk1]mode manual load-balance

默认手工模式，所以不显示

[LSW1-Eth-Trunk1]display this

#

interface Eth-Trunk1

#

Return

端口加入到Eth-Trunk1

[LSW1]interface GigabitEthernet 0/0/1

[LSW1-GigabitEthernet0/0/1]

Eth-Trunk1

[LSW1]interface GigabitEthernet 0/0/2

[LSW1-GigabitEthernet0/0/2]eth-trunk 1

[LSW1]interface GigabitEthernet 0/0/3

[LSW1-GigabitEthernet0/0/3]eth-trunk 1

[LSW1]display 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

GigabitEthernet0/0/3 Up 1

LSW2配置Eth-Trunk 1：

[LSW2]interface Eth-Trunk 1

[LSW2-Eth-Trunk1]mode manual load-balance

[LSW2-Eth-Trunk1]trunkport GigabitEthernet 0/0/1 to 0/0/3

#快速添加端口到Eth-Trunk 1里

验证：

[LSW2]display 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

GigabitEthernet0/0/3 Up 1

抓包查看

LACP模式配置

[LSW2-Eth-Trunk1]display this

#

interface Eth-Trunk1

mode lacp-static

#

Return

查看eth-trunk1的状态

[LSW2]display 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-cc19-6deb

Least Active-linknumber: 1 Max Active-linknumber: 8

Operate status: down Number Of Up Port In Trunk: 0

--------------------------------------------------------------------------------

ActorPortName Status PortType PortPri PortNo PortKey PortState Weight

GigabitEthernet0/0/1 Unselect 1GE 32768 2 305 10100010 1

GigabitEthernet0/0/2 Unselect 1GE 32768 3 305 10100010 1

GigabitEthernet0/0/3 Unselect 1GE 32768 4 305 10100010 1

Partner:

--------------------------------------------------------------------------------

ActorPortName SysPri SystemID PortPri PortNo PortKey PortState

GigabitEthernet0/0/1 0 0000-0000-0000 0 0 0 10100011

GigabitEthernet0/0/2 0 0000-0000-0000 0 0 0 10100011

GigabitEthernet0/0/3 0 0000-0000-0000 0 0 0 10100011

状态是Unselect的原因是因为LACP模式需要两端协商，对端现在还没有配置，所以状态不生效，配置对端查看状态。

[LSW1-Eth-Trunk1]display this

#

interface Eth-Trunk1

mode lacp-static

#

Return

[LSW2-Eth-Trunk1]display 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-cc19-6deb

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 2 305 10111100 1

GigabitEthernet0/0/2 Selected 1GE 32768 3 305 10111100 1

GigabitEthernet0/0/3 Selected 1GE 32768 4 305 10111100 1

Partner:

--------------------------------------------------------------------------------

ActorPortName SysPri SystemID PortPri PortNo PortKey PortState

GigabitEthernet0/0/1 32768 4c1f-ccd3-3de7 32768 2 305 10111100

GigabitEthernet0/0/2 32768 4c1f-ccd3-3de7 32768 3 305 10111100

GigabitEthernet0/0/3 32768 4c1f-ccd3-3de7 32768 4 305 10111100

限制 active-linknumber 2 条

[LSW1-Eth-Trunk1]max active-linknumber 2

[LSW1-Eth-Trunk1]

Aug 29 2023 15:10:24-08:00 LSW1 DS/4/DATASYNC_CFGCHANGE:OID 1.3.6.1.4.1.2011.5.2

5.191.3.1 configurations have been changed. The current change number is 16, the

change loop count is 0, and the maximum number of records is 4095.

[LSW1-Eth-Trunk1]display eth

[LSW1-Eth-Trunk1]display 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-ccd3-3de7

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 1GE 32768 2 305 10111100 1

GigabitEthernet0/0/2 Selected 1GE 32768 3 305 10111100 1

GigabitEthernet0/0/3 Unselect 1GE 32768 4 305 10100000 1

Partner:

--------------------------------------------------------------------------------

ActorPortName SysPri SystemID PortPri PortNo PortKey PortState

GigabitEthernet0/0/1 32768 4c1f-cc19-6deb 32768 2 305 10111100

GigabitEthernet0/0/2 32768 4c1f-cc19-6deb 32768 3 305 10111100

GigabitEthernet0/0/3 32768 4c1f-cc19-6deb 32768 4 305 10110000

[LSW2-Eth-Trunk1]display 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-cc19-6deb

Least Active-linknumber: 1 Max Active-linknumber: 8

Operate status: up Number Of Up Port In Trunk: 2

--------------------------------------------------------------------------------

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 Unselect 1GE 32768 4 305 10110000 1

Partner:

--------------------------------------------------------------------------------

ActorPortName SysPri SystemID PortPri PortNo PortKey PortState

GigabitEthernet0/0/1 32768 4c1f-ccd3-3de7 32768 2 305 10111100

GigabitEthernet0/0/2 32768 4c1f-ccd3-3de7 32768 3 305 10111100

GigabitEthernet0/0/3 32768 4c1f-ccd3-3de7 32768 4 305 10100000

交换机的LSW1的mac地址小，是主动端。LSW2是被动端。

设置LSW1的2、3口为转发状态

[LSW1]interface GigabitEthernet 0/0/2

[LSW1-GigabitEthernet0/0/2]lacp priority 4096

Aug 29 2023 15:23:24-08:00 LSW1 DS/4/DATASYNC_CFGCHANGE:OID 1.3.6.1.4.1.2011.5.2

5.191.3.1 configurations have been changed. The current change number is 17, the

change loop count is 0, and the maximum number of records is 4095.

[LSW1-GigabitEthernet0/0/2]quit

[LSW1]interface GigabitEthernet 0/0/3

[LSW1-GigabitEthernet0/0/3]lacp priority 4096

[LSW1-GigabitEthernet0/0/1]display 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-ccd3-3de7

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 Unselect 1GE 32768 2 305 10100000 1

GigabitEthernet0/0/2 Selected 1GE 4096 3 305 10111100 1

GigabitEthernet0/0/3 Selected 1GE 4096 4 305 10111100 1

Partner:

--------------------------------------------------------------------------------

ActorPortName SysPri SystemID PortPri PortNo PortKey PortState

GigabitEthernet0/0/1 32768 4c1f-cc19-6deb 32768 2 305 10110000

GigabitEthernet0/0/2 32768 4c1f-cc19-6deb 32768 3 305 10111100

GigabitEthernet0/0/3 32768 4c1f-cc19-6deb 32768 4 305 10111100

以上配置更改转发状态后不生效的情况下，可以重启eth-trunk1或者端口解决。

查看LSW2的eth-trunk 1状态

[LSW2]display 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-cc19-6deb

Least Active-linknumber: 1 Max Active-linknumber: 8

Operate status: up Number Of Up Port In Trunk: 2

--------------------------------------------------------------------------------

ActorPortName Status PortType PortPri PortNo PortKey PortState Weight

GigabitEthernet0/0/1 Unselect 1GE 32768 2 305 10110000 1

GigabitEthernet0/0/2 Selected 1GE 32768 3 305 10111100 1

GigabitEthernet0/0/3 Selected 1GE 32768 4 305 10111100 1

Partner:

--------------------------------------------------------------------------------

ActorPortName SysPri SystemID PortPri PortNo PortKey PortState

GigabitEthernet0/0/1 32768 4c1f-ccd3-3de7 32768 2 305 10100000

GigabitEthernet0/0/2 32768 4c1f-ccd3-3de7 4096 3 305 10111100

GigabitEthernet0/0/3 32768 4c1f-ccd3-3de7 4096 4 305 10111100

把主动端该成LSW2，链路会重置

[LSW2]lacp priority 100

[LSW2]

Aug 29 2023 15:39:14-08:00 LSW2 %%01IFNET/4/IF_STATE(l)[0]:Interface Eth-Trunk1

has turned into DOWN state.

Aug 29 2023 15:39:14-08:00 LSW2 %%01IFNET/4/IF_STATE(l)[1]:Interface Eth-Trunk1

has turned into UP state.

Aug 29 2023 15:39:14-08:00 LSW2 DS/4/DATASYNC_CFGCHANGE:OID 1.3.6.1.4.1.2011.5.2

5.191.3.1 configurations have been changed. The current change number is 9, the

change loop count is 0, and the maximum number of records is 4095.

查看LSW2的链路选择

[LSW2]display 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: 100 System ID: 4c1f-cc19-6deb

Least Active-linknumber: 1 Max Active-linknumber: 8

Operate status: up Number Of Up Port In Trunk: 2

--------------------------------------------------------------------------------

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 Unselect 1GE 32768 4 305 10110000 1

Partner:

--------------------------------------------------------------------------------

ActorPortName SysPri SystemID PortPri PortNo PortKey PortState

GigabitEthernet0/0/1 32768 4c1f-ccd3-3de7 32768 2 305 10111100

GigabitEthernet0/0/2 32768 4c1f-ccd3-3de7 4096 3 305 10111100

GigabitEthernet0/0/3 32768 4c1f-ccd3-3de7 4096 4 305 10100000

查看LSW1的链路选择，和LSW2（主动端）一致

[LSW1]display 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-ccd3-3de7

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 1GE 32768 2 305 10111100 1

GigabitEthernet0/0/2 Selected 1GE 4096 3 305 10111100 1

GigabitEthernet0/0/3 Unselect 1GE 4096 4 305 10100000 1

Partner:

--------------------------------------------------------------------------------

ActorPortName SysPri SystemID PortPri PortNo PortKey PortState

GigabitEthernet0/0/1 100 4c1f-cc19-6deb 32768 2 305 10111100

GigabitEthernet0/0/2 100 4c1f-cc19-6deb 32768 3 305 10111100

GigabitEthernet0/0/3 100 4c1f-cc19-6deb 32768 4 305 10110000

抓包查看

least active-linknumber命令用来配置链路聚合组活动接口数目的下限阈值，缺省情况下，链路聚合组活动接口数的下限阈值是1

设置下限阈值2

[LSW2]interface Eth-Trunk 1

[LSW2-Eth-Trunk1]least active-linknumber ?

INTEGER<1-8> The data of least active-linknumber

[LSW2-Eth-Trunk1]least active-linknumber 2

关闭端口，模拟小于阈值2

[LSW2]interface GigabitEthernet 0/0/1

[LSW2-GigabitEthernet0/0/1]shutdown

[LSW2]interface GigabitEthernet 0/0/2

[LSW2-GigabitEthernet0/0/1]shutdown

查看eth-trunk 1情况，已经关闭

[LSW2]display 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: 100 System ID: 4c1f-cc19-6deb

Least Active-linknumber: 2 Max Active-linknumber: 8

Operate status: down Number Of Up Port In Trunk: 0

--------------------------------------------------------------------------------

ActorPortName Status PortType PortPri PortNo PortKey PortState Weight

GigabitEthernet0/0/1 Unselect 1GE 32768 2 305 10100010 1

GigabitEthernet0/0/2 Unselect 1GE 32768 3 305 10100010 1

GigabitEthernet0/0/3 Unselect 1GE 32768 4 305 10100000 1

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