【HCIA】使用Access port实现简易的VLAN间通信

news2025/5/14 18:24:52

前言

当我们拥有一台三层交换机与两个vlan，我们可以使用简易的Vlanif配置实现VLAN间通信。

文章目录

前言
1. 拓扑图
2. 配置交换机
3. 配置PC1与PC2的网络
4. `port link-type`
后记
修改记录

1. 拓扑图

在这里插入图片描述

2. 配置交换机

<Huawei>system-view
[Huawei]undo info-center enable
[Huawei]vlan batch 10 20
[Huawei]interface Vlanif 10
[Huawei-Vlanif10]ip address 192.168.10.254 24
[Huawei-Vlanif10]quit
[Huawei]interface Vlanif 20
[Huawei-Vlanif20]ip address 192.168.20.254 24
[Huawei-Vlanif20]quit
[Huawei]interface GigabitEthernet 0/0/1
[Huawei-GigabitEthernet0/0/1]port link-type access
[Huawei-GigabitEthernet0/0/1]port default vlan 10
[Huawei-GigabitEthernet0/0/1]quit
[Huawei]interface GigabitEthernet 0/0/2
[Huawei-GigabitEthernet0/0/2]port link-type access 
[Huawei-GigabitEthernet0/0/2]port default vlan 20

这里我们需要注意的是，要先声明vlan，再创建Vlanif接口配置网络，不然会提示vlan不存在。在接口下，一定要配置默认Vlan，否则接口和Vlan之间没有产生任何关联，则接口也不知道如何进行转发。

3. 配置PC1与PC2的网络

在这里插入图片描述

4. `port link-type`

它是端口的链接类型，或者说是接口与接口之间的连接方式。它其实有四种方式：

[Huawei-GigabitEthernet0/0/1]port link-type ?
  access        Access port
  dot1q-tunnel  QinQ port
  hybrid        Hybrid port
  trunk         Trunk port

但是目前只需要学会 access、trunk、hybrid，官方对它们的解释如下：

An access interface connects to a user device. It can connect only to an access link, and Ethernet frames transmitted on the access link are untagged. An access interface adds a VLAN tag to packets and sets the VID field in the VLAN tag to the default VLAN ID. The access link transmits only the packets with the default VLAN ID.

A trunk interface connects to a wireless access point and can connect only to a trunk link. A trunk interface allows frames from multiple VLANs to pass.

A hybrid interface can connect to either a user device or a wireless access point, and it can connect to an access link or a trunk link. A hybrid interface allows frames from multiple VLANs to pass and can remove VLAN tags of outgoing frames.

其中，Hybrid方式最难，我有写过：《15-VLAN的Hybrid配置笔记》