Virtual Network
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Users questions:How to assemble the network classroom? Virtual Network
Experts answer: virtual LAN vlan brief like a lot of business in the early stage of development, there are fewer demands on the network is not so high, and in order to save costs, many companies have adopted through the network routers to achieve sub- a simple paragraph structure (Figure 1). In thisNetwork, each broadcast packet on the LAN can be the section of all equipment received, regardless of whether these devices. With the continuous expansion of business scale, especially multimedia applications in the enterprise LAN, so that each department within the very large amount of data transmission. In addition, development of the companySome of the problems left over to make a department office staff can not be relatively concentrated. More importantly, the company's financial sector needs more and more security, and other departments can not mix an Ethernet segment, to prevent data eavesdropping. These new issues need to be more flexible to configure the LAN, and therefore produceVirtual local area network (VirtualLAN) technology. Virtual network is the physical network infrastructure, using the function switches and routers, configure the network's logical topology, which allows network administrators to an arbitrary number of LAN segments aggregate into any of a user group, just likeThey are a single LAN. Recent Virtual Network (VLAN) rapid rise of, and became one of the most viable networking technology. (Figure 2) the characteristics of virtual local area network using the bandwidth, flexibility, performance and so on, virtual LAN (VLAN) have shown a great advantage. The use of virtual LANsUsers can easily add, delete, move, etc., to improve network management efficiency. He has the following characteristics: 1, flexible, soft-defined boundaries independent of the physical medium of the device group. VLAN introduction of the concept to assume a network of sub-switches work, rather than use a router to completeInto. By using VLAN, can be a physical local area network originally divided into many subnets logical sense, without considering the specific physical location, each VLAN can be mapped to a logical unit, such as departments, workshops and project groups, etc.. 2, broadcast traffic is limited to the boundaries defined in the soft, The enhanced network security. Within the same VLAN as the host does not affect the data sent between hosts on the other VLAN, thus reducing the possibility of eavesdropping of data, greatly enhanced network security. 3, in the same VLAN members to provide low latency, wire-speed communication. Can be divided into segments within the network or the micro segment, increase the flexibility of the network packet. VLAN technology through the network into different logical broadcast domains, packets sent over the network only in the same VLAN and port to exchange. This limit is only a local area network with the same VLAN'sOther local area network with each other, to avoid wasting bandwidth, thereby eliminating the traditional bridged / switched networks inherent flaws - packages often do not need it delivered to the LAN. It also improves the flexibility of network configuration size, particularly Zai support radio / multi multicast protocol and applications LAN Huan Jing Zhong, liable toFace flood of packets. In the VLAN structure, can easily reject the other VLAN packets, thereby significantly reducing network traffic. Virtual LAN VLAN classification is a soft technology, how classification will determine whether this technology in the network is expected to play to the role, following the introduction of virtualClassification and characteristics of local area network. Common VLAN, there are three categories: port-based, hardware-based MAC address, network-based layer. 1, Port-based Port-based VLAN classification is the division of the more popular and the first way, which is characterized by the switch ports are grouped according to each group definedAs a virtual local area network. The packet switch port on a switch can also be across several switches (eg, 1 switch port 1 and 2 and 2 switch ports 4,5,6 and 7 on the final composition of the virtual local area network station A; The switch port 1, 3,4,5, 6,7 and 8-port switch with 2 1,2,3 and 8 on the final composition of the virtual local area network station B). Figure 3 defines the port grouping VLAN membership is currently the most commonly used method, and the configuration is quite straightforward. Simply use the port group to define the virtual local area network will not allow multiple virtualTo be a practical local area network that contains the same network segment (or switch port). It features a virtual local area network for all the various port terminals in a broadcast domain, they can communicate with each other, different virtual local area network for communication between the need to carry through the route. This way the advantages of virtual local area network division in
Experts answer: virtual LAN vlan brief like a lot of business in the early stage of development, there are fewer demands on the network is not so high, and in order to save costs, many companies have adopted through the network routers to achieve sub- a simple paragraph structure (Figure 1). In thisNetwork, each broadcast packet on the LAN can be the section of all equipment received, regardless of whether these devices. With the continuous expansion of business scale, especially multimedia applications in the enterprise LAN, so that each department within the very large amount of data transmission. In addition, development of the companySome of the problems left over to make a department office staff can not be relatively concentrated. More importantly, the company's financial sector needs more and more security, and other departments can not mix an Ethernet segment, to prevent data eavesdropping. These new issues need to be more flexible to configure the LAN, and therefore produceVirtual local area network (VirtualLAN) technology. Virtual network is the physical network infrastructure, using the function switches and routers, configure the network's logical topology, which allows network administrators to an arbitrary number of LAN segments aggregate into any of a user group, just likeThey are a single LAN. Recent Virtual Network (VLAN) rapid rise of, and became one of the most viable networking technology. (Figure 2) the characteristics of virtual local area network using the bandwidth, flexibility, performance and so on, virtual LAN (VLAN) have shown a great advantage. The use of virtual LANsUsers can easily add, delete, move, etc., to improve network management efficiency. He has the following characteristics: 1, flexible, soft-defined boundaries independent of the physical medium of the device group. VLAN introduction of the concept to assume a network of sub-switches work, rather than use a router to completeInto. By using VLAN, can be a physical local area network originally divided into many subnets logical sense, without considering the specific physical location, each VLAN can be mapped to a logical unit, such as departments, workshops and project groups, etc.. 2, broadcast traffic is limited to the boundaries defined in the soft, The enhanced network security. Within the same VLAN as the host does not affect the data sent between hosts on the other VLAN, thus reducing the possibility of eavesdropping of data, greatly enhanced network security. 3, in the same VLAN members to provide low latency, wire-speed communication. Can be divided into segments within the network or the micro segment, increase the flexibility of the network packet. VLAN technology through the network into different logical broadcast domains, packets sent over the network only in the same VLAN and port to exchange. This limit is only a local area network with the same VLAN'sOther local area network with each other, to avoid wasting bandwidth, thereby eliminating the traditional bridged / switched networks inherent flaws - packages often do not need it delivered to the LAN. It also improves the flexibility of network configuration size, particularly Zai support radio / multi multicast protocol and applications LAN Huan Jing Zhong, liable toFace flood of packets. In the VLAN structure, can easily reject the other VLAN packets, thereby significantly reducing network traffic. Virtual LAN VLAN classification is a soft technology, how classification will determine whether this technology in the network is expected to play to the role, following the introduction of virtualClassification and characteristics of local area network. Common VLAN, there are three categories: port-based, hardware-based MAC address, network-based layer. 1, Port-based Port-based VLAN classification is the division of the more popular and the first way, which is characterized by the switch ports are grouped according to each group definedAs a virtual local area network. The packet switch port on a switch can also be across several switches (eg, 1 switch port 1 and 2 and 2 switch ports 4,5,6 and 7 on the final composition of the virtual local area network station A; The switch port 1, 3,4,5, 6,7 and 8-port switch with 2 1,2,3 and 8 on the final composition of the virtual local area network station B). Figure 3 defines the port grouping VLAN membership is currently the most commonly used method, and the configuration is quite straightforward. Simply use the port group to define the virtual local area network will not allow multiple virtualTo be a practical local area network that contains the same network segment (or switch port). It features a virtual local area network for all the various port terminals in a broadcast domain, they can communicate with each other, different virtual local area network for communication between the need to carry through the route. This way the advantages of virtual local area network division in
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