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静态方法( 手动)实现交换机链路聚合2023-03-25 00:58:56 | 来源:哔哩哔哩 | 查看: | 评论:0

一、 实验目的

1、了解链路聚合技术的使用场合;


(资料图)

2、熟练掌握链路聚合技术的配置。

二、 应用环境

两个实验室分别使用一台交换机提供20 多个信息点,两个实验室的互通通过一根级联

网线。每个实验室的信息点都是百兆到桌面。两个实验室之间的带宽也是100M,如果实验

室之间需要大量传输数据,就会明显感觉带宽资源紧张。当楼层之间大量用户都希望以100M

传输数据的时候,楼层间的链路就呈现出了独木桥的状态,必然造成网络传输效率下降等后

果。

解决这个问题的办法就是提高楼层主交换机之间的连接带宽,实现的办法可以是采用千

兆端口替换原来的100M 端口进行互联,但这样无疑会增加组网的成本,需要更新端口模块,

并且线缆也需要作进一步的升级。另一种相对经济的升级办法就是链路聚合技术。

顾名思义,链路聚合,是将几个链路作聚合处理,这几个链路必须是同时连接两个相同

的设备的,这样,当作了链路聚合之后就可以实现几个链路相加的带宽了。比如,我们可以

将4 个100M 链路使用链路聚合作成一个逻辑链路,这样在全双工条件下就可以达到800M

的带宽,即将近1000M 的带宽。这种方式比较经济,实现也相对容易。

三、 实验设备

1、DCS-3926S 交换机2 台

2、PC 机2 台

3、Console 线1-2 根

4、直通网线 4-8 根

四、 实验拓扑

五、 实验要求

如果链路聚合成功,则PC1 可以ping 通PC2。

六、 实验步骤

第一步:正确连接网线,交换机全部恢复出厂设置,做初始配置,避免广播风暴出现

交换机A:

Switch>enable

Switch#config t

Switch(config)#hostname SwitchA

SwitchA(config)#interface vlan 1

SwitchA(config-if)#ip address 192.168.1.11 255.255.255.0

SwitchA(config-if)#no shutdown

SwitchA(config-if)#exit

SwitchA(config)#spanning-tree vlan 1

SwitchA#write

Building configuration...

[OK]

SwitchA#

交换机B:

Switch>enable

Switch#config t

Switch(config)#hostname SwitchB

SwitchB(config)#interface vlan 1

SwitchB(config-if)#ip address 192.168.1.12 255.255.255.0

SwitchB(config-if)#no shutdown

SwitchB(config-if)#exit

SwitchB(config)#spanning-tree vlan 1

SwitchB(config)#exit

SwitchB#write

Building configuration...

[OK]

SwitchB#

第二步:创建port-channel

交换机A:

SwitchA(config)#interface port-channel 1                //创建链路组:port-channel 1 

SwitchA(config-if)#exit

SwitchA#show etherchannel port-channel                //查看已创建的链路组

交换机B:

SwitchB(config)#interface port-channel 1                     //创建链路组:port-channel 1

SwitchB(config-if)#exit

SwitchB#show etherchannel port-channel                      //查看已创建的链路组

第三步:手工生成链路聚合组

交换机A:

SwitchA(config)#interface range f0/22 -f0/24               //进入F0/22-23-24号端口范围

SwitchA(config-if-range)#channel-group 1 mode on         //手动生成链路组

SwitchA(config-if-range)#exit

SwitchA(config)#exit

SwitchA#write

Building configuration...

[OK]

SwitchA#

交换机B:

SwitchB(config)#interface range f0/22 -f0/24          //进入F0/22-23-24号端口范围

SwitchB(config-if-range)#channel-group 1 mode on        //手动生成链路组

SwitchB(config-if-range)#exit

SwitchB(config)#exit

SwitchB#write

Building configuration...

[OK]

SwitchB#

验证配置:

交换机A:

SwitchA#show interface etherchannel

FastEthernet0/22:

Port state = 1

Channel group = 1         Mode = On       Gcchange = -

Port-channel  = Po1       GC = -          Pseudo port-channel = Po1

Port index    = 0         Load = 0x0      Protocol = -

Age of the port in the current state:  00d:01h:03m:51s

FastEthernet0/23:

Port state = 1

Channel group = 1         Mode = On       Gcchange = -

Port-channel  = Po1       GC = -          Pseudo port-channel = Po1

Port index    = 0         Load = 0x0      Protocol = -

Age of the port in the current state:  00d:01h:03m:51s

FastEthernet0/24:

Port state = 1

Channel group = 1         Mode = On       Gcchange = -

Port-channel  = Po1       GC = -          Pseudo port-channel = Po1

Port index    = 0         Load = 0x0      Protocol = -

Age of the port in the current state:  00d:01h:03m:51s

----

Port-channel1:Port-channel1

Age of the Port-channel   = 00d:01h:03m:51s

Logical slot/port   = 2/1             Number of ports = 3

GC                  = 0x00000000      HotStandBy port = null

Port state          =

Protocol            =   3

Port Security       = Disabled

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits

------+------+------+------------------+-----------

0     00     Fa0/22   On                 0

0     00     Fa0/23   On                 0

0     00     Fa0/24   On                 0

Time since last port bundled:    00d:01h:03m:51s    Fa0/24

SwitchA#

交换机B:

SwitchB#show interface etherchannel

FastEthernet0/22:

Port state = 1

Channel group = 1         Mode = On       Gcchange = -

Port-channel  = Po1       GC = -          Pseudo port-channel = Po1

Port index    = 0         Load = 0x0      Protocol = -

Age of the port in the current state:  00d:01h:04m:52s

FastEthernet0/23:

Port state = 1

Channel group = 1         Mode = On       Gcchange = -

Port-channel  = Po1       GC = -          Pseudo port-channel = Po1

Port index    = 0         Load = 0x0      Protocol = -

Age of the port in the current state:  00d:01h:04m:52s

FastEthernet0/24:

Port state = 1

Channel group = 1         Mode = On       Gcchange = -

Port-channel  = Po1       GC = -          Pseudo port-channel = Po1

Port index    = 0         Load = 0x0      Protocol = -

Age of the port in the current state:  00d:01h:04m:52s

----

Port-channel1:Port-channel1

Age of the Port-channel   = 00d:01h:04m:52s

Logical slot/port   = 2/1             Number of ports = 3

GC                  = 0x00000000      HotStandBy port = null

Port state          =

Protocol            =   3

Port Security       = Disabled

Ports in the Port-channel:

Index   Load   Port     EC state        No of bits

------+------+------+------------------+-----------

0     00     Fa0/22   On                 0

0     00     Fa0/23   On                 0

0     00     Fa0/24   On                 0

Time since last port bundled:    00d:01h:04m:52s    Fa0/24

SwitchB#

第四步:使用ping命令验证  

使用PC1 ping PC2

使用PC1 ping PC2

注意事项和排错

1、为使Port Channel正常工作,Port Channel的成员端口必须具备以下相同的属性:

a) 端口均为全双工模式;

b) 端口速率相同;

c) 端口的类型必须一样,比如同为以太口或同为光纤口;

d) 端口同为Access端口并且属于同一个VLAN或同为Trunk端口;

e) 如果端口为Trunk端口,则其Allowed VLAN和Native VLAN属性也应该相同。

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