【菜鸟IT】如何提高企业交换机之间的链路带宽和可靠性？（下）

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拓扑图

图4.1 以太网链路聚合拓扑图

场景

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。上一集讲到以太网交换机的基础配置和配置手动模式的链路聚合，今天我们会继续讲配置链路聚合，具体操作如下

操作步骤

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