What is a Virtual LAN?

VLAN is a local area network broadcast domain that is partitioned and isolated in a virtual network at the data link layer. A VLAN behaves like a virtual network switch or network link that can share the same physical structure with other VLANs while staying logically separate from them.

1)What Are VLANs Helpful With?

By further dividing the network part of the IP address into several subnets, the problems of the low utilization rate of IP address space and inflexible two-level IP addresses can be solved.

Similar to VLAN, the subnet can isolate communication between hosts. Hosts belonging to different VLANs cannot communicate directly with each other, nor can hosts belonging to different subnets communicate directly with each other. But there is no necessary correspondence between them.

communicate directly with each other. But there is no necessary correspondence between them.

2)What advantages does VLAN have?

1. Restrict broadcast domain: the broadcast domain is limited to one VLAN, which saves bandwidth and improves network processing capacity.

2. Enhance the security of LAN: different VLANs are isolated from each other during transmission, that is, users in one VLAN cannot communicate directly with users in other VLANs.

3. Improve the robustness of the network: the fault is limited to one VLAN, and the fault in this VLAN will not affect the normal work of other VLANs.

4. Flexible construction of virtual workgroups: VLAN can be used to divide different users into different workgroups, and users in the same workgroup don’t have to be limited to a fixed physical scope, so network construction and maintenance are more convenient and flexible.

3)VLAN vs Subnet

Similar to VLAN, subnet can isolate communication between hosts. Hosts belonging to different VLAN cannot communicate directly with each other, nor can hosts belonging to different subnets communicate directly with each other. But there is no necessary correspondence between them.

4)Is there a IoT Router support VLAN?

E-Lins will be a good choice for you, as for the China Best 5G Router Manufacturer, you could choose many 4G routers & 5G routers with VLAN.