Application of VLAN in Local Area Network

With the constant expansion of local area network,the number of users has increased and network applications keep growing.Therefore,the network is becoming increasingly crowded,and conflicts arise.It's increasingly difficult to effectively improve the flexibility,efficiency and security of network management.VLAN technologies are mainly applied to solve the problem that the switches fail to restrict broad cast in interconnection of local area network.This technology can divide a LAN into multiple logical LAN-VLAN,and each VLAN is a broadcast domain.Communication between the VLANs works the in same way as in a single LAN,while the VLAN can not communicate directly with each other.Therefore,broadcast packet is restricted in one VLAN,the problems like IP conflict caused by excessive subnet will be effectively solved,and the stability and security of network will be guaranteed.