Switch VLAN Experiment
First, let’s briefly introduce Vlan:
VLAN (Virtual Local Area Network) is called “Virtual Local Area Network” in Chinese. It is a technology used to divide broadcast domains on Layer 2 switches. The local area network is divided into several small virtual subnets, so that each subnet becomes an independent broadcast domain. A VLAN is a group of logical devices and users. These devices and users are not restricted by physical locations. Hosts in the same VLAN can be on multiple switches. Hosts in the same VLAN can communicate directly, but hosts between VLANs cannot communicate directly, thus limiting broadcast packets to one VLAN.
After a brief understanding of Vlan, start this "Switch VLAN Experiment"
Objectives of the experiment:
·Master the concept of broadcast domain and VLAN
·Master the method of dividing VLANs
·Understand the IEEE 802.1q protocol and use Trunk to realize intra-VLAN communication
Experiment content and principle:
Virtual Local Area Network (VLAN)
A virtual local area network (VLAN) is a group of logical devices and users. These devices and users are not limited by physical location, and can be based on functions, departments and applications. Factors organize them to communicate with each other as if they were on the same network segment.
Features of VLAN:
Grouping based on logic, not limited by physical location.
In the same VLAN and the same as the real LAN.
Users in different VLANs need to use Layer 3 devices to communicate.
The main equipment
of the experiment · 2 configurable switches
· 4 PCs
· several network cables
network topology
Experimental process
1. First, on the Cisco simulator, create two new switches and configure the switch VLAN settings:
[Note]
interface fa0/2 : 进入接口类型为fastethernet，0号槽口中2号端口的配置状态
switchport access vlan 20 : 将当前的端口划到Vlan20下
2. Display switch VLAN information
3. Connectivity test
[Note]
The IP addresses of the four PCs are consistent with the topological diagram above
PC1 and PC2:
PC1 and PC3:
PC1 and PC4:
