目录
第六章 VLAN特性与配置
实验 6-1 VLAN配置
学习目的
·掌握Eth-trunk的配置方法
拓扑图
图6-1 VLAN配置
场景
你是公司的网络管理员。现在公司网络是由二台交换机组成的以太网环境。图中路由器模拟网络中的计算机，R3是一台服务器。为了优化这个网络，需要你提升S1和S2相连链路的速度和可靠性。
学习任务
步骤一.基础配置与IP编址
给所有设备配置IP地址和掩码。
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R1
[R1]interface GigabitEthernet 0/0/1
[R1-GigabitEthernet0/0/1]ip address 10.0.10.1 24
[R1-GigabitEthernet0/0/1]quit
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R2
[R2]interface GigabitEthernet 0/0/1
[R2-GigabitEthernet0/0/1]ip address 10.0.10.2 24
[R2-GigabitEthernet0/0/1]quit
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname R3
[R3]interface GigabitEthernet 0/0/2
[R3-GigabitEthernet0/0/2]ip address 10.0.10.3 24
[R3-GigabitEthernet0/0/2]quit
给交换机配置名称。
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname S1
<Huawei>system-view
Enter system view, return user view with Ctrl+Z.
[Huawei]sysname S2
步骤二.Eth-trunk链路聚合
Eth-trunk可以将二条或多条链路捆绑成一条链路以提升链路带宽和可靠性。将S1和S2的G0/0/9和G0/0/10接口加入到同一个Eth-trunk组可以实现企业需求。
创建Eth-trunk接口。
[S1]interface Eth-Trunk 1
[S1-Eth-Trunk1]
[S2]interface Eth-Trunk 1
[S2-Eth-Trunk1]
配置Eth-trunk的工作模式为LACP模式。
[S1-Eth-Trunk1]mode lacp
[S1-Eth-Trunk1]quit
[S2-Eth-Trunk1]mode lacp
[S2-Eth-Trunk1]quit
将S1和S2的G0/0/9和G0/0/10接口加入到Eth-trunk接口。
[S1]interface GigabitEthernet 0/0/9
[S1-GigabitEthernet0/0/9]eth-trunk 1
[S1-GigabitEthernet0/0/9]quit
[S1]interface GigabitEthernet 0/0/10
[S1-GigabitEthernet0/0/10]eth-trunk 1
[S1-GigabitEthernet0/0/10]quit
[S2]interface GigabitEthernet 0/0/9
[S2-GigabitEthernet0/0/9]eth-trunk 1
[S2-GigabitEthernet0/0/9]quit
[S2]interface GigabitEthernet 0/0/10
[S2-GigabitEthernet0/0/10]eth-trunk 1
[S2-GigabitEthernet0/0/10]quit
使用命令dispay eth-trunk查看配置情况。
[S1]display eth-trunk
Eth-Trunk1's state information is:
Local:
LAG ID: 1 WorkingMode: LACP
Preempt Delay: Disabled Hash arithmetic: According to SIP-XOR-DIP
System Priority: 32768 System ID: d0d0-4ba6-aab0
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 1 305 10111100 1
GigabitEthernet0/0/10 Selected 1GE 32768 2 305 10111100 1
Partner:
----------------------------------------------------------------------------
ActorPortName SysPri SystemID PortPri PortNo PortKey PortState
GigabitEthernet0/0/9 32768 d0d0-4ba6-ac20 32768 1 305 10111100
GigabitEthernet0/0/10 32768 d0d0-4ba6-ac20 32768 2 305 10111100
输出信息显示，此时链路运行模式为LACP模式，并且最大活动接口数阈值是8条链路。同时G0/0/9和G0/0/10接口都处于活动状态。
使用命令更改活动接口数阈值。
[S1]interface Eth-Trunk 1
[S1-Eth-Trunk1]max active-linknumber 1
[S1-Eth-Trunk1]quit
[S2]interface Eth-Trunk 1
[S2-Eth-Trunk1]max active-linknumber 1
[S2-Eth-Trunk1]quit
查看Eth-trunk链路配置情况。
[S1]display eth-trunk 1
Eth-Trunk1's state information is:
Local:
LAG ID: 1 WorkingMode: LACP
Preempt Delay: Disabled Hash arithmetic: According to SIP-XOR-DIP
System Priority: 32768 System ID: d0d0-4ba6-aab0
Least Active-linknumber: 1 Max Active-linknumber: 1
Operate status: up Number Of Up Port In Trunk: 1
----------------------------------------------------------------------------
ActorPortName Status PortType PortPri PortNo PortKey PortState Weight
GigabitEthernet0/0/9 Selected 1GE 32768 1 305 10111100 1
GigabitEthernet0/0/10 Unselect 1GE 32768 2 305 10100000 1
Partner:
----------------------------------------------------------------------------
ActorPortName SysPri SystemID PortPri PortNo PortKey PortState
GigabitEthernet0/0/9 32768 d0d0-4ba6-ac20 32768 1 305 10111100
GigabitEthernet0/0/10 32768 d0d0-4ba6-ac20 32768 2 305 10100000
从输出信息可以看到，G0/0/10接口状态改变为Unselect。实现了Eth-trunk聚合链路下一条链路传输数据，另一条链路备份的功能，提升了网络可靠性。
通过关闭S1的G0/0/9接口验证备份链路功能。
[S1]interface GigabitEthernet 0/0/9
[S1-GigabitEthernet0/0/9]shutdown
[S1-GigabitEthernet0/0/9]quit
查看Eth-trunk链路信息。
[S1]display eth-trunk 1
Eth-Trunk1's state information is:
Local:
LAG ID: 1 WorkingMode: LACP
Preempt Delay: Disabled Hash arithmetic: According to SIP-XOR-DIP
System Priority: 32768 System ID: d0d0-4ba6-aab0
Least Active-linknumber: 1 Max Active-linknumber: 1
Operate status: up Number Of Up Port In Trunk: 1
----------------------------------------------------------------------------
ActorPortName Status PortType PortPri PortNo PortKey PortState Weight
GigabitEthernet0/0/9 Unselect 1GE 32768 1 305 10100010 1
GigabitEthernet0/0/10 Selected 1GE 32768 2 305 10111100 1
Partner:
----------------------------------------------------------------------------
ActorPortName SysPri SystemID PortPri PortNo PortKey PortState
GigabitEthernet0/0/9 0 0000-0000-0000 0 0 0 10100011
GigabitEthernet0/0/10 32768 d0d0-4ba6-ac20 32768 2 305 10111100
从输出信息看到Eth-trunk链路中G0/0/9已经变为Unselect状态，G0/0/10由Unselect状态自动转换为Selected状态继续传输数据。由此可知，实现了链路备份功能。
最终设备配置
[S1]display current-configuration
!Software Version V200R008C00SPC500
#
sysname S1
#
interface Eth-Trunk1
mode lacp
max active-linknumber 1
#
interface GigabitEthernet0/0/9
shutdown
eth-trunk 1
#
interface GigabitEthernet0/0/10
eth-trunk 1
#
return
[S2]display current-configuration
!Software Version V200R008C00SPC500
#
sysname S2
#
interface Eth-Trunk1
mode lacp
max active-linknumber 1
#
interface GigabitEthernet0/0/9
shutdown
eth-trunk 1
#
interface GigabitEthernet0/0/10
eth-trunk 1
#
Return