· 掌握接口速率的配置方法
· 掌握使用手动模式配置链路聚合的方法
· 掌握使用静态LACP模式配置链路聚合的方法
· 掌握在静态LACP模式下配置接口优先级的方法
图4.1 以太网链路聚合拓扑图
您是公司的网络管理员。现在公司购买了两台华为的S5700系列的交换机，为了提高交换机之间链路带宽以及可靠性，您需要在交换机上配置链路聚合功能。
步骤一 以太网交换机基础配置
华为交换机接口默认开启了自协商功能。
首先修改交换机的设备名称，然后查看SW1上G0/0/9和G0/0/10接口的详细信息。
<Huawei>system-view
[Huawei]sysname SW1
[SW1]
[SW1]display interface GigabitEthernet 0/0/9
GigabitEthernet0/0/9 current state : UP
Line protocol current state : UP
Description:
Switch Port, Link-type : trunk(negotiated),
PVID : 1, TPID : 8100(Hex), The Maximum Frame Length is 9216
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is d0d0-4ba6-aab0
Current system time: 2019-11-23 14:18:37
Port Mode: COMMON COPPER
Speed : 1000, Loopback: NONE
Duplex: FULL, Negotiation: ENABLE
Mdi : AUTO, Flow-control: DISABLE
Last 300 seconds input rate 256 bits/sec, 0 packets/sec
Last 300 seconds output rate 912 bits/sec, 0 packets/sec
Input peak rate 13976 bits/sec, Record time: 2019-11-22 14:59:12
Output peak rate 13976 bits/sec, Record time: 2019-11-22 14:59:12
……output omit……[SW1]display interface GigabitEthernet 0/0/10
GigabitEthernet0/0/10 current state : UP
Line protocol current state : UP
Description:
Switch Port, Link-type : trunk(negotiated),
PVID : 1, TPID : 8100(Hex), The Maximum Frame Length is 9216
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is d0d0-4ba6-aab0
Current system time: 2019-11-23 14:22:22
Port Mode: COMMON COPPER
Speed : 1000, Loopback: NONE
Duplex: FULL, Negotiation: ENABLE
Mdi : AUTO, Flow-control: DISABLE
Last 300 seconds input rate 72 bits/sec, 0 packets/sec
Last 300 seconds output rate 1024 bits/sec, 0 packets/sec
Input peak rate 14032 bits/sec, Record time: 2019-11-22 14:59:12
Output peak rate 14032 bits/sec, Record time: 2019-11-22 14:59:12
……output omit……步骤二 配置手动模式的链路聚合
在SW1和SW2上创建Eth-Trunk 1，然后将G0/0/9和G0/0/10接口加入Eth-Trunk 1（注意：将接口加入Eth-Trunk前需确认成员接口下没有任何配置）。
[SW1]interface Eth-Trunk 1
[SW1-Eth-Trunk1]quit
[SW1]interface GigabitEthernet 0/0/9
[SW1-GigabitEthernet0/0/9]eth-trunk 1
[SW1-GigabitEthernet0/0/9]quit
[SW1]interface GigabitEthernet 0/0/10
[SW1-GigabitEthernet0/0/10]eth-trunk 1[SW2]interface Eth-Trunk 1
[SW2-Eth-Trunk1]quit
[SW2]interface GigabitEthernet 0/0/9
[SW2-GigabitEthernet0/0/9]eth-trunk 1
[SW2-GigabitEthernet0/0/9]quit
[SW2]interface GigabitEthernet 0/0/10
[SW2-GigabitEthernet0/0/10]eth-trunk 1验证Eth-Trunk的配置结果。
[SW1]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: 2
----------------------------------------------------------------------------
PortName Status Weight
GigabitEthernet0/0/9 Up 1
GigabitEthernet0/0/10 Up 1 [SW2]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: 2
----------------------------------------------------------------------------
PortName Status Weight
GigabitEthernet0/0/9 Up 1
GigabitEthernet0/0/10 Up 1 回显信息中灰色阴影标注的部分表明Eth-Trunk工作正常，成员接口都已正确加入。
在SW1上查看接口聚合后带宽
[SW1]display interface Eth-Trunk 1
Eth-Trunk1 current state : UP
Line protocol current state : UP
Description:
Switch Port, PVID : 1, Hash arithmetic : According to SIP-XOR-DIP,Maximal BW: 2G, Current BW: 2G, The Maximum Frame Length is 9216
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 4c1f-cc16-05ac
Current system time: 2020-03-15 15:33:56-08:00Input bandwidth utilization : 0%Output bandwidth utilization : 0%
-------------------------------------------------------------------
PortName Status Weight
-------------------------------------------------------------------
GigabitEthernet0/0/9 UP 1
GigabitEthernet0/0/10 UP 1
-------------------------------------------------------------------
The Number of Ports in Trunk : 2
The Number of UP Ports in Trunk : 2在SW2上查看接口聚合后带宽
[SW2]display interface Eth-Trunk 1
Eth-Trunk1 current state : UP
Line protocol current state : UP
Description:
Switch Port, PVID : 1, Hash arithmetic : According to SIP-XOR-DIP,Maximal BW: 2G, Current BW: 2G, The Maximum Frame Length is 9216
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 4c1f-cc78-50fb
Current system time: 2020-03-15 15:35:33-08:00Input bandwidth utilization : 0%Output bandwidth utilization : 0%
-------------------------------------------------------------------
PortName Status Weight
-------------------------------------------------------------------
GigabitEthernet0/0/9 UP 1
GigabitEthernet0/0/10 UP 1
-------------------------------------------------------------------
The Number of Ports in Trunk : 2
The Number of UP Ports in Trunk : 2步骤三 配置静态LACP模式的链路聚合
删除SW1和SW2上的G0/0/9和G0/0/10接口下的配置。
[SW1]interface GigabitEthernet 0/0/9
[SW1-GigabitEthernet0/0/9]undo eth-trunk
[SW1-GigabitEthernet0/0/9]quit
[SW1]interface GigabitEthernet 0/0/10
[SW1-GigabitEthernet0/0/10]undo eth-trunk[SW2]interface GigabitEthernet 0/0/9
[SW2-GigabitEthernet0/0/9]undo eth-trunk
[SW2-GigabitEthernet0/0/9]quit
[SW2]interface GigabitEthernet 0/0/10
[SW2-GigabitEthernet0/0/10]undo eth-trunk创建Eth-Trunk 1并配置该Eth-Trunk为静态LACP模式。然后将G0/0/9和G0/0/10接口加入Eth-Trunk 1。
[SW1]interface Eth-Trunk 1
[SW1-Eth-Trunk1]mode lacp
[SW1-Eth-Trunk1]quit
[SW1]interface GigabitEthernet 0/0/9
[SW1-GigabitEthernet0/0/9]eth-trunk 1
[SW1-GigabitEthernet0/0/9]quit
[SW1]interface GigabitEthernet 0/0/10
[SW1-GigabitEthernet0/0/10]eth-trunk 1[SW2]interface Eth-Trunk 1
[SW2-Eth-Trunk1]mode lacp
[SW2-Eth-Trunk1]quit
[SW2]interface GigabitEthernet 0/0/9
[SW2-GigabitEthernet0/0/9]eth-trunk 1
[SW2-GigabitEthernet0/0/9]quit
[SW2]interface GigabitEthernet 0/0/10
[SW2-GigabitEthernet0/0/10]eth-trunk 1查看交换机上Eth-Trunk的信息，查看链路是否协商成功。
[SW1]disp 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-cc16-05ac
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
GigabitEthernet0/0/9 Selected 1GE 32768 10 305 10111100 1
GigabitEthernet0/0/10 Selected 1GE 32768 11 305 10111100 1 Partner:
--------------------------------------------------------------------------------
ActorPortName SysPri SystemID PortPri PortNo PortKey PortState
GigabitEthernet0/0/9 32768 4c1f-cc78-50fb 32768 10 305 10111100
GigabitEthernet0/0/10 32768 4c1f-cc78-50fb 32768 11 305 10111100[SW2]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-cc78-50fb
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
GigabitEthernet0/0/9 Selected 1GE 32768 10 305 10111100 1
GigabitEthernet0/0/10 Selected 1GE 32768 11 305 10111100 1 Partner:
--------------------------------------------------------------------------------
ActorPortName SysPri SystemID PortPri PortNo PortKey PortState
GigabitEthernet0/0/9 32768 4c1f-cc16-05ac 32768 10 305 10111100
GigabitEthernet0/0/10 32768 4c1f-cc16-05ac 32768 11 305 10111100在SW1上配置LACP的系统优先级为100，使其成为LACP主动端。
[SW1]lacp priority 100
配置接口的优先级确定活动链路。
[SW1]interface GigabitEthernet 0/0/9
[SW1-GigabitEthernet0/0/9]lacp priority 100
[SW1-GigabitEthernet0/0/9]quit
[SW1]interface GigabitEthernet 0/0/10
[SW1-GigabitEthernet0/0/10]lacp priority 100
验证Eth-Trunk的配置结果。
[SW1]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-cc16-05ac
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
GigabitEthernet0/0/9 Selected 1GE 100 10 305 10111100 1
GigabitEthernet0/0/10 Selected 1GE 100 11 305 10111100 1 Partner:
--------------------------------------------------------------------------------
ActorPortName SysPri SystemID PortPri PortNo PortKey PortState
GigabitEthernet0/0/9 32768 4c1f-cc78-50fb 32768 10 305 10111100
GigabitEthernet0/0/10 32768 4c1f-cc78-50fb 32768 11 305 10111100[SW2]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-cc78-50fb
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
GigabitEthernet0/0/9 Selected 1GE 32768 10 305 10111100 1
GigabitEthernet0/0/10 Selected 1GE 32768 11 305 10111100 1
Partner:
--------------------------------------------------------------------------------
ActorPortName SysPri SystemID PortPri PortNo PortKey PortState
GigabitEthernet0/0/9 100 4c1f-cc16-05ac 100 10 305 10111100
GigabitEthernet0/0/10 100 4c1f-cc16-05ac 100 11 305 10111100配置文件
[SW1]display current-configuration
[SW2]display current-configuration end
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