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There are many things worth learning about layer-3 switches. Here we mainly introduce the smart stream processing technology of layer-3 switches. The popularization and application of computer networks are changing our world and our way of thinking and life. With the continuous development of network technology, we are more concerned about how people use computers and how they use networks to create a larger living space for themselves after entering the digital and information age. I. New issue

the functions of the High-level network to maximize the use of network resources. The application layer switch places the application layer switch in the core layer or aggregation layer, instead of close to the lower layer intervention layer, this allows network managers to allocate network resources at a lower cost. In terms of structure, application layer switches focus all functions on a dedicated special application integrated circuit or ASIC.

to the specific needs of the enterprise. Compared with Layer 3, the level 2 Adoption determines the so-called network control classification. A pure Layer 2 solution is the cheapest solution, however, it provides the least control over subnet division and broadcast restrictions. Layer-3 switches provide dynamic integration support for all levels in the classification. Traditional general-purpose routers and external switches can also achieve this goal. However, compared with this solution, laye

In some low-end switch markets, layer-3 switching has gradually become the mainstream in the market. Its biggest difference is that it integrates the advantages of layer-2 switches and layer-3 routers, in this way, the line speed performance can be provided at all levels. This integrated structure also introduces policy management attributes, which not only associate Layer 2 with Layer 3, but also provides traffic prioritization, security, and a variety of other flexible functions, such as link

classification. A pure Layer 2 solution is the cheapest solution, however, it provides the least control over subnet division and broadcast restrictions. Layer-3 switches provide dynamic integration support for all levels in the classification. Traditional general-purpose routers and external switches can also achieve this goal, but compared with this solution, layer-3 LAN switches require less configuration, less space, and less wiring, cheaper and more reliable performance. A layer-3 Switch h

network resources. The application layer switch is placed on the core layer or aggregation layer, rather than close to the lower layer intervention layer, this allows network managers to allocate network resources at a lower cost. In terms of structure, application layer switches focus all functions on a dedicated special application integrated circuit or ASIC. ASIC is cheaper than the CPU of traditional r

management has always been a long-term goal of companies of all sizes. Full Control of transmission traffic, bandwidth requirements, performance, security threats, and billing allocation are a small part of the challenges facing network administrators. SFlow is based on the latest standard network export protocol. It can solve many problems faced by network administrators. By embedding sFlow technology into network routers and switch ASIC chips, sFlo

entry to the exit.Therefore, any device that complies with this definition can be called an exchange device. As you can see,"Exchange" is a widely used word. When it is used to describe the data networkA layer 2 device actually refers toBridging DeviceWhen it is used to describe the third-layer device of the data network, it refers toRouting device.What we often talk aboutEthernet SwitchA bridge-based multi-port L2 network device provides low-latency, low-Overhead Communication for data frame f

Statement: Original address: http://www.androidenea.com/2009/06/android-boot-process-from-power-on.html, thisArticleIt is based on the translation of this article. The translation is not good, please smile -): 1. Power on and boot Rom Code ExecutionBoot and execute boot RomCode At power on the CPU will be in a state where no initializations have been done. internal clocks are not set up and the only memory available is the internal RAM.When power supplies are stable the execution w

, tools are far behind platforms. We are currently using the latest platform technologies (for example, by using music to write services, we can now automate processes among multiple enterprises located anywhere on this planet ), but we are still writing every application manually, as if this is the preferred method. We start with a small concept (such as loop, string, and integer) to create a large abstract concept (such as insurance claims and securities trading ). We work diligently and metic

placed in their own networks because they can bypass the bottleneck of traditional routers. When a computer needs to communicate with a computer other than its local network, to send packets to the outside of the group, they must first send the packets to the nearest router. Vro provides connections and security boundaries between the company and the Internet, as well as Intranet connections between the company's internal groups ). Traditional routers are used only when absolutely necessary, su

bus is mainly used as external memory interface, such as Texas Instruments (TI) C6000 series DSP external memory interface, can support external synchronization SDRAM, Sbsram and FIFO, but also support asynchronous SRAM, Flash and so on. The external memory interface can also be used for interconnection with an in-board FPGA or ASIC chip, in which case the FPGA or ASIC simulates a DSP-supported memory inte

services and turn the Internet to intelligence. Layer-3 switching technology enables all the functions of high-level networks through application layer switches, enabling network managers to allocate network resources at a lower cost. In terms of hardware, layer-7 switches focus all functions on a dedicated application integrated circuit or ASIC. ASIC is cheaper than the CPU of traditional routers, and is

Compared with the traditional L2 Switch, the L3 switch provides the routing function, which can be understood as a vswitch with the routing function. Layer-3 switches can be divided into pure hardware and pure software based on their data processing. (1) Hardware-only layer-3 technology is relatively complex, costly, but fast, with good performance and strong load capabilities. The principle is to use an ASIC chip and hardware to search and refresh ro

no significant progress compared to the original design, using components similar to a standard PC and running proprietary software using multiple interface cards. In contrast, multilayer switched routers focus all of these functions on a dedicated special application integrated circuit or ASIC. The ASIC is less expensive than traditional routers and is typically distributed across network ports. Today,

, detection and forwarding of data packets. The reason why the use of NP technology, Neusoft Network Security Division product manager Xu Songquan said: "In the past, most of the thousands of trillion wire speed firewall using ASIC technology, but the ASIC processing of packets is limited to the 2~4 layer." With the development of the network, the firewall needs to be able to implement complex security con

The use of NP technology firewall is not a new concept, then the East soft in this field of High-profile, and what is the significance of it? The firewall is already the enterprise network essential security equipment, at present the market firewall brand multitudinous, uses the technical plan also to be different. Recently, Neusoft has worked closely with Intel to launch a full range of Neteye firewall products based on NP (network Processor) technology. Prior to this, Lenovo, founder and other

by system expansion. Second, the main technology of LAN switch LAN switch because of the use of virtual circuit switching mode, the technology can be in each input, output ports between the different bandwidth, or in the absence of transmission bottlenecks, the completion of high-speed data transmission between the ports, thus greatly improving the network information points of the data transmission, optimization of the network system. The main difference between LAN switch and hub hardware i

convergence layer, rather than close to the lower level of the intervention layer, so that network managers can better allocate network resources at lower cost is possible. Structurally, the application-layer switch focuses all functions on a dedicated special application integrated circuit or ASIC. The ASIC is less expensive than traditional routers and is typically distributed over network ports, and in

In order to meet the higher requirements of users, the firewall architecture has experienced the transition from low performance x86, PPC software firewall to high-performance hardware firewall, and gradually to not only meet the high performance, but also need to support more business capability direction development. After several years of prosperity, the firewall has formed many types of architectures, and the devices of these architectures complement each other and continue to evolve and up