VLAN的劃分，劃分原則，基礎配置，交換接口模式的工作原理

VLAN 虛擬局域網

常見vlan劃分的幾種常用方式

1. 安裝部門劃分
2. 安裝地點劃分
3. 安裝人員劃分

常見的vlan劃分的幾種方法

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vlan透傳

vlan 透傳是指一端發(fā)送數據到另一端時，另一端接受到數據包時是剝離了802.1q封裝的

什么意思呢？

圖1-1

如圖1-1，當PC1發(fā)送數據給PC2，數據包傳遞到LSW1的Ethernet0/0/1接口，會封裝上接口的vlan-id，即802.1q協(xié)議，當LSW1將數據從Ethernet0/0/2口轉發(fā)給PC2時，則需要將數據包的802.1q協(xié)議封裝給剝離開，PC才可以讀取到數據中的內容，這個過程就是vlan的透傳；當交換機在轉發(fā)數據包給終端時，數據包的802.1q封裝若無法被剝離，則會造成無法通信；

常見的三種交換接口的模式

1. access接入模式，一般用于接入終端的交換機接口
2. trunk中繼模式，一般用于交換機之間互相連接的接口
3. hybrid混合模式，可以剝離多個vlan-id和允許多個vlan通過

pvid：在交換機接口接收到沒有802.1q封裝的數據包時，給數據包打上vlan-id（封裝802.1q）；

TG（tagged）：接口在轉發(fā)和接收數據包時攜帶vlan標簽（802.1q封裝）通過；

UT（untagged）：在接口轉發(fā)數據包時，將對應的vlan標簽（802.1q封裝）剝離；

access和trunk模式的交換機接口只可以pvid和UT同一個的vlan-id（802.1q封裝）；

相關命令：

本篇只講基于接口的vlan劃分！

access：

port link-type access

//配置接口為access模式

port default vlan [vlan-id]

//配置接口vlan-id，默認vlan 1，接口接收數據時，PVID和TG該vlan，轉發(fā)時UT該vlan；

trunk：

port link-type trunk

//配置接口為trunk模式

port trunk allow-pass vlan [vlan-id列表]

//配置接口TG列表

port trunk pvid vlan [vlan-id]

//配置接口vlan-id，使接口可以pvid該vlan，若TG列表含該vlan，則接口在轉發(fā)數據時UT該vlan；

hybrid：

port link-type hyhrid

//配置接口為hybrid模式

port hybrid pvid vlan [vlan-id]

//使接口可以pvid該vlan

port hybrid tagged vlan [vlan-id 列表]

//配置接口TG列表

port hybrid untagged vlan [vlan-id列表]

//配置接口UT列表

hybrid接口模式中，同一個vlan只能在一個列表中；

實驗

拓撲圖

本篇只做關于vlan的配置（鏈路聚合部分除外）！

其他相關配置：https://blog.csdn.net/weixin_46678521/article/details/126472140

S1的部分配置

[S1]vlan batch 10 100

Info: This operation may take a few seconds. Please wait for a moment...done.

[S1]interface Ethernet0/0/1

[S1-Ethernet0/0/1]port link-type trunk

[S1-Ethernet0/0/1]port trunk pvid vlan 100

[S1-Ethernet0/0/1]port trunk allow-pass vlan 10 100

[S1-Ethernet0/0/1]quit

[S1]interface Ethernet0/0/2

[S1-Ethernet0/0/2]port link-type access

[S1-Ethernet0/0/2]port default vlan 10

[S1-Ethernet0/0/2]quit

[S1]interface Ethernet0/0/3

[S1-Ethernet0/0/3]port link-type access

[S1-Ethernet0/0/3]port default vlan 10

[S1-Ethernet0/0/3]quit

S2的部分配置

[S2]vlan batch 20 100

Info: This operation may take a few seconds. Please wait for a moment...done.

[S2]interface Ethernet0/0/1

[S2-Ethernet0/0/1]port link-type hybrid

[S2-Ethernet0/0/1]port hybrid pvid vlan 100

[S2-Ethernet0/0/1]port hybrid untagged vlan 100

[S2-Ethernet0/0/1]port hybrid tagged vlan 20

[S2-Ethernet0/0/1]quit

[S2]interface Ethernet0/0/2

[S2-Ethernet0/0/2]port link-type access

[S2-Ethernet0/0/2]port default vlan 20

[S2-Ethernet0/0/2]quit

S3的部分配置

[S3]vlan batch 30 100

Info: This operation may take a few seconds. Please wait for a moment...done.

[S3]interface Ethernet0/0/1

[S3-Ethernet0/0/1]port link-type trunk

[S3-Ethernet0/0/1]port trunk pvid vlan 100

[S3-Ethernet0/0/1]port trunk allow-pass vlan 30 100

[S3-Ethernet0/0/1]quit

[S3]interface Ethernet0/0/2

[S3-Ethernet0/0/2]port link-type access

[S3-Ethernet0/0/2]port default vlan 30

[S3-Ethernet0/0/2]quit

S4的部分配置

[S4]vlan batch 40 100

Info: This operation may take a few seconds. Please wait for a moment...done.

[S4]interface Ethernet0/0/1

[S4-Ethernet0/0/1]port link-type trunk

[S4-Ethernet0/0/1]port trunk pvid vlan 100

[S4-Ethernet0/0/1]port trunk allow-pass vlan 40 100

[S4-Ethernet0/0/1]quit

[S4]interface Ethernet0/0/2

[S4-Ethernet0/0/2]port link-type access

[S4-Ethernet0/0/2]port default vlan 40

[S4-Ethernet0/0/2]quit

S5的部分配置

[S5]vlan 4

[S5-vlan4]quit

[S5]interface Ethernet 0/0/1

[S5-Ethernet0/0/2]port link-type access

[S5-Ethernet0/0/2]port default vlan 4

[S5-Ethernet0/0/2]quit

[S5]interface Ethernet 0/0/2

[S5-Ethernet0/0/2]port link-type access

[S5-Ethernet0/0/2]port default vlan 4

[S5-Ethernet0/0/2]quit

[S5]interface g0/0/1

[S5-GigabitEthernet0/0/1]port link-type trunk

[S5-GigabitEthernet0/0/1]port trunk allow-pass vlan 4

[S5-GigabitEthernet0/0/1]quit

[S5]interface g0/0/2

[S5-GigabitEthernet0/0/2]port link-type trunk

[S5-GigabitEthernet0/0/2]port trunk allow-pass vlan 4

[S5-GigabitEthernet0/0/2]quit

S6的部分配置

[S6]vlan 5

[S6-vlan5]quit

[S6]interface Ethernet0/0/1

[S6-Ethernet0/0/1]port link-type access

[S6-Ethernet0/0/1]port default vlan 5

[S6-Ethernet0/0/1]quit

[S6]interface Ethernet0/0/2

[S6-Ethernet0/0/2]port link-type access

[S6-Ethernet0/0/2]port default vlan 5

[S6-Ethernet0/0/2]quit

[S6]interface g0/0/1

[S6-GigabitEthernet0/0/1]port link-type trunk

[S6-GigabitEthernet0/0/1]port trunk allow-pass vlan 5

[S6-GigabitEthernet0/0/1]quit

[S6]interface g0/0/2

[S6-GigabitEthernet0/0/2]port link-type trunk

[S6-GigabitEthernet0/0/2]port trunk allow-pass vlan 5

[S6-GigabitEthernet0/0/2]quit

LSW1的部分配置

[LSW1]vlan batch 2 to 9

Info: This operation may take a few seconds. Please wait for a moment...done.

[LSW1]interface g0/0/1

[LSW1-GigabitEthernet0/0/1]port link-type access

[LSW1-GigabitEthernet0/0/1]port default vlan 2

[LSW1-GigabitEthernet0/0/1]quit

[LSW1]interface g0/0/2

[LSW1-GigabitEthernet0/0/2]port link-type access

[LSW1-GigabitEthernet0/0/2]port default vlan 3

[LSW1-GigabitEthernet0/0/2]quit

[LSW1]interface g0/0/3

[LSW1-GigabitEthernet0/0/3]port link-type trunk

[LSW1-GigabitEthernet0/0/3]port trunk allow-pass vlan 4

[LSW1-GigabitEthernet0/0/3]quit

[LSW1]interface g0/0/4

[LSW1-GigabitEthernet0/0/4]port link-type trunk

[LSW1-GigabitEthernet0/0/4]port trunk allow-pass vlan 5

[LSW1-GigabitEthernet0/0/4]quit

[LSW1]interface g0/0/5

[LSW1-GigabitEthernet0/0/5]port link-type access

[LSW1-GigabitEthernet0/0/5]port default vlan 8

[LSW1-GigabitEthernet0/0/5]quit

LSW2的部分配置

[LSW2]vlan batch 2 to 9

Info: This operation may take a few seconds. Please wait for a moment...done.

[LSW2]interface g0/0/1

[LSW2-GigabitEthernet0/0/1]port link-type access

[LSW2-GigabitEthernet0/0/1]port default vlan 2

[LSW2-GigabitEthernet0/0/1]quit

[LSW2]interface g0/0/2

[LSW2-GigabitEthernet0/0/2]port link-type access

[LSW2-GigabitEthernet0/0/2]port default vlan 3

[LSW2-GigabitEthernet0/0/2]quit

[LSW2]interface g0/0/3

[LSW2-GigabitEthernet0/0/3]port link-type trunk

[LSW2-GigabitEthernet0/0/3]port trunk allow-pass vlan 4

[LSW2-GigabitEthernet0/0/3]quit

[LSW2]interface g0/0/4

[LSW2-GigabitEthernet0/0/4]port link-type trunk

[LSW2-GigabitEthernet0/0/4]port trunk allow-pass vlan 5

[LSW2-GigabitEthernet0/0/4]quit

[LSW2]]interface g0/0/5

[LSW2-GigabitEthernet0/0/5]port link-type access

[LSW2-GigabitEthernet0/0/5]port default vlan 9

[LSW2-GigabitEthernet0/0/5]quit

SW1的部分配置

[SW1]vlan batch 2 6 10 20 100

Info: This operation may take a few seconds. Please wait for a moment...done.

[SW1]interface g0/0/1

[SW1-GigabitEthernet0/0/1]port link-type access

[SW1-GigabitEthernet0/0/1]port default vlan 2

[SW1-GigabitEthernet0/0/1]quit

[SW1]interface g0/0/2

[SW1-GigabitEthernet0/0/2]port link-type access

[SW1-GigabitEthernet0/0/2]port default vlan 2

[SW1-GigabitEthernet0/0/2]quit

SW2的部分配置

[SW2]vlan batch 3 6 30 40 100

Info: This operation may take a few seconds. Please wait for a moment...done.

[SW2]interface g0/0/1

[SW2-GigabitEthernet0/0/1]port link-type access

[SW2-GigabitEthernet0/0/1]port default vlan 3

[SW2-GigabitEthernet0/0/1]quit

[SW2]interface g0/0/2

[SW2-GigabitEthernet0/0/2]port link-type access

[SW2-GigabitEthernet0/0/2]port default vlan 3

[SW2-GigabitEthernet0/0/2]quit文章來源地址http://www.zghlxwxcb.cn/news/detail-413476.html

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