different switches

can be connected to a real server to meet user-defined rules, for example, the number of connections on each server is equal or the transmission stream is allocated based on the capacity of different servers. How to choose a layer-4 Switch (1) Speed To be effective in Enterprise Networks, layer-4 switching must provide comparable performance with layer-3 line rate routers. That is to say, layer-4 switching must operate on all ports at full-media sp

CISCO PT Simulation Experiment (9) Inter-VLAN routing for layer three switchesExperimental Purpose : Mastering the configuration of the switch Tag VLANMastering the configuration method of three-layer switch VLAN routingInter-VLAN communication via three-layer switchExperimental Background :The Company's finance department and sales department are in different offices, in order to secure and facilitate management of the two departments of the host VLA

functions of the switch through configuration and validation tests. Two of the switches we tested are capable of forwarding on the third layer. Digital China D-Link DGS-3308TG is one of them, we set their eight ports to different VLANs, into different subnets to test its performance, quite good. As a fixed and modular switch, it also supports more complex routin

The ethernet switch is a very important device in the network. Many people may not know the data interface type of the Ethernet switch. It does not matter. After reading this article, you must have gained a lot, I hope this article will teach you more things. As the main connection device of LAN, Ethernet switches have become one of the fastest network devices widely used in applications. At the same time, with this rapid development, the functions of

replacement. The pilot is designed to maintain and run so that the host server will not be able to access the data stored in it. Of course, all high-availability features will increase system costs. High-end features of the Guide The Guide also provides many advanced functions that are unavailable on small fixed port number switches. Both brocade and Cisco directors support virtual SAN, FICON for the mainframe, and remote connection using FCIP, iSCSI

connect the input and output ports to forward the business flow. In addition to the switch, authentication, and packet filtering functions, the switch is expected to have the routing processing function. Different user applications also put forward new requirements for network elasticity. At the same time, with the rapid expansion of the network scale and the increasing number of applications in the network, the user network must strengthen visitor c

cascade of fiber channel switches. The limitations of traditional optical fiber channels are mainly manifested in the fact that data communication and resource sharing cannot be achieved between different Fabric. In a Fabric, the larger the SAN network is formed by the more fiber channel switches, the more opportunities for devices to access and migrate, resulti

network in the future. This network will not discard all previous technologies and products, but integrate them, but all applications must be implemented in the form of IP addresses, all things end in the Internet and routing class in the form of IP addresses. Currently, China's backbone network bandwidth usage is less than 10%. Therefore, how to attract more users to use network resources is a concern of operators and service providers. Router manufacturers all see the best use of MPLS is to i

the Target receiver so that the data frame can directly access the destination address through the same source address. Switches work at the data link layer of the OSI model, providing Intelligent Learning and Memory capabilities. LAN switches are defined as Ethernet, fast Ethernet, FDDI, and ring-based network. They are all shared LAN with shared media and shared bandwidth. To increase bandwidth, vrouters

of execution stacks. (4) store the local variable memory area of each thread. (5) access to main memory and other resources in the same process. used to indicate the sequence of instructions being executed. Program Counter , retention Local Variables , a few state parameters, and return address and so on a group of Register Device and the Stack . 2 ) Independent Dispatch and dispatch of the basic unit. in multithreaded In the OS , threads are the basic units that can run independently , and th

of execution stacks. (4) store the local variable memory area of each thread. (5) access to main memory and other resources in the same process. used to indicate the sequence of instructions being executed. Program Counter , retention Local Variables , a few state parameters, and return address and so on a group of Register Device and the Stack . 2 ) Independent Dispatch and dispatch of the basic unit. in multithreaded In the OS , threads are the basic units that can run independently , and th

streams, voice streams, and video streams in the network has a great impact on the network's effective and stable performance, and these applications are initiated on the edge of the network, therefore, L2 switches must be able to differentiate different business flows and assign different bandwidths and forward priorities based on their priorities. Edge smart

division is generally specified by ports. data frames are only sent to the ports of the same VLAN, which improves performance and reduces bandwidth. However, such vswitches can only be used on networks with less complex structures. For example, the entire network has only one CIDR block, or the computers in different CIDR blocks do not access each other. In other cases, such switches are insufficient in f

Ethernet switches are still commonly used, so I have studied the comprehensive performance comparison of Ethernet switches. Here I will share with you, hoping to be useful to you. Rack-mounted switches, fixed configuration with/without expansion slots) rack-mounted Ethernet switches are slot

There are many things worth learning about the 10-ge switch. Here we mainly introduce the basic performance testing knowledge of the 10-ge switch. Network World recently conducted a 10-ge switch test on the 10-ge data center, analysis of vswitches from Arista, Blade, Cisco, Dell, Extreme and HP, each 10-ge vswitch must have at least 0.24 million m interfaces. They compared these products in 10 different ways and put them through a three-month fatigue

affected.The above three points are also the main technical parameters used to judge the performance of Layer 2 and Layer 3 switches. Please pay attention to the comparison when considering device selection.2) routing technologyThe router operates on the layer 3 of the OSI model-the network layer. Its working mode is similar to that of the Layer 2 switch, but the router works on the layer 3, this difference determines that routes and

maintains its own address table.The working principle of a L2 Switch can be inferred from the following three points:(1) because the switch exchanges data on most ports at the same time, it requires a wide switching bus bandwidth. If the L2 Switch has N ports, the bandwidth of each port is M, if the bandwidth of the vswitch bus exceeds n × m, the vswitch can achieve line rate switching;(2) the MAC address of the machine connected by the Learning port, write the address table, and the size of th

Large-scale application of devices reduces costs significantly, and the competition becomes more rational, which indicates that the broadband service has passed the lifecycle and entered the business growth period. The user's demand for broadband networks is ultimately to achieve "three networks", that is, the three networks for data, voice, and video services. In order to ensure the key services of users and treat users of different levels differentl

Cascade is connected to other hubs through a port of the hub. For example, a UPLINK port of the hub is used to connect to another normal port, and a stack is connected through the backplane of the hub, it is a chip-level connection. For example, the stacking of two 24-port switches is like a 48-port switch. The advantage is that there is no bottleneck. Stack and Uplink are two ways to connect multiple switches