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Anonymous users2024-02-06Virtual LAN: A network segment that connects many organizations.
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Anonymous users2024-02-05The advantages of LAN are as follows:
1. Virtual LAN (VLAN) is a group of logical devices and users, these devices and users are not limited by physical location, and can be organized according to factors such as functions, departments and applications, and communicate with each other as if they are in the same network segment, hence the name virtual LAN.
2. Virtual LAN can reduce the need for network upgrades, save expensive costs, and reduce the cost of moving locations and working locations. And the utilization rate of network broadband is higher, it can make the second layer network in the LAN divide into a number of broadcast domains, so that the unnecessary traffic in the broadband network can be saved, and also improve the functionality.
3. Through the technology of virtual LAN, it can be well concentrated between different regions, networks and customers, so as to provide everyone with a virtual network space, and its effect can be the same as that of the router, becoming convenient and flexible, and efficient.
4. Enhance the security of the local area network, and the user group containing sensitive data can be isolated from the rest of the network, thereby reducing the possibility of leaking confidential information. Packets in different VLANs are isolated from each other during transmission, that is, users in one VLAN cannot communicate directly with users in other VLANs.
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Anonymous users2024-02-04For example, in a scientific research institution, a number of virtual LANs have been divided, but because of a certain scientific research task, technical personnel are temporarily transferred from each virtual LAN to form a research group, which requires the research group to communicate freely, and at the same time, the scientific research personnel must maintain information exchange with the original virtual LAN.
A virtual LAN can use the Internet with insecure communication to build a virtual LAN with secure communication. In terms of distance, if two remote organizations want to build a LAN but do not have a dedicated line connection, they can use virtual LAN technology to realize a secure communication line between the two institutions.
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Anonymous users2024-02-03Answer] :d VLAN virtual area network, a VLAN is a switching network Wuchang, which is a broadcast domain, in which all users are in the same broadcast domain. VLAN is a technology based on the implementation of the switching code machine, which can divide a physical local area into virtual multiple local area networks.
Collision domains are a physical layer concept that can be separated by switches.
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