ex4200 switch

Problem:Break plays a role in the loop flow control of the for loop, while loop, and stops execution of the statement after the break, jumps out of the loop, and jumps out of the loop control body;In the switch condition selection, there is no circular control, what is the role of the break? Solution:1. The execution flow of the switch statement is:The value of the expression in the parentheses after the

physical network and geographical location. A virtual workgroup can contain departments and workgroups in different locations, without having to physically reconfigure any ports to actually implement network users regardless of their physical location. The virtual network technology divides the traditional broadcast domain into each independent sub broadcast domain, restricts the broadcast to the virtual workgroup, because of the reduction of broadcast domain, the proportion of broadcast packet

In recent years, with the popularization of Mbit/s, Gbit/s, and even Mbit/s, the wide application of Broadband LAN and even Bandwidth WAN has driven the continuous development of switch technology. In enterprise applications, the rapid development of Internet, the adoption of e-commerce, e-government, e-trade, e-futures and other online trading methods, while accelerating logistics and capital flow turnover, it also accelerates the rapid increase of i

The superior performance and price of vswitches are greatly reduced, promoting the rapid popularization of vswitches. Network administrators often encounter a variety of switch faults at work. How can they quickly and accurately find and eliminate faults? This article briefly introduces common fault types and troubleshooting steps. As vswitches are widely used in the company's network, from the low end to the middle end, from the middle end to the hig

The concept of management is very important to all walks of life. If an enterprise cannot effectively manage it, the cohesion of the Enterprise will be very weak and the development of the Enterprise will be severely hindered; if an army is not managed, it will become a sandbox with no fighting power. If a network cannot be effectively managed, the use of such network resources will become messy. Therefore, it is very important to manage the network. For the management of the grass-roots layer i

What are the differences between hub, switch, router, and modem ??? What types of networks are available (local area, wide area, and enterprise )?How should the above components be connected for each network type? ========================================================== ============== Hub ------- a hub is also called a hub. It works on the physical layer (bottom layer) and does not have a matching software system. It is a pure hardware device. A hub

The author office used a common two-layer switch, has been silent for us for several years, so far there has been no accident. However, recently, the author of the local area network computer room has a switch suddenly strange phenomenon; taking into account the particularity of the fault phenomenon, the author used a special method to exclude, now the specific troubleshooting process is written out, I hope

I believe many people know that layer-4 switches are commonly called Application switches in the industry. Here we will mainly introduce layer-4 switch technologies and functions. With the popularization of broadband and the deepening of various network applications, our local network is undertaking heavy business traffic. The amount of transmitted audio, video, data, and other information in the network system is full of bandwidth. We have to provide

With the advent of the Internet era, security issues have become an urgent issue. The existence of viruses, hackers, and various vulnerabilities makes security tasks extremely difficult in the Internet era. Vswitches play an important role in the enterprise network, usually the core of the entire network. In the network era where hackers are intruding into the cloud and the virus is raging, the core switch also takes responsibility for network securit

Currently, the mainstream Gigabit backbone switches have high forwarding capabilities and smaller sizes. They are suitable for common users. Among the six Ethernet switches we have tested, EDIMAX ES-5800R and LeaPComm6004 switch is not manageable switch, Accton es00008 and creative company Thinker3800 switch are network tube type

* Vlan configuration ideas (access and Trunk) (1) create a Vlan and configure a static VLAN on an IOS-based switch: switch # vlandatabaseswitch (vlan) # vlanvlan-numnamevlan-nameswitch (vlan) # exitswitch # configureteriminalswitch (config) # interfaceinterfacemodulenu * Vlan configuration ideas (access and Trunk) (1) create a Vlan and configure a static VLAN on the IOS-based

The Windows Server 2012/r2 Hyper-V Virtual Switch (vSwitch) introduces a number of user-requested features to enable tenant isolation, communication shaping, preventing malicious virtual machines, and more easily troubleshooting problems. This guide focuses on improvements in open scalability and manageability of non-Microsoft extensions. You can write non-Microsoft extensions to emulate the full functionality of hardware-based switches and to support

Three-layer switch compared to routers in a large LAN, this function is perfect, to master the three-layer switch is very helpful, but now some manufacturers of switches can also directly connect the Internet to provide router capabilities. Comparison of three-layer switch and router In order to meet the challenge of deepening the network application, the netwo

Introduction: Android Custom view for beginners and even work for a few years of programmers are very afraid, but also is the Android advanced learning, peacetime projects often have some harsh requirements, we can find a variety of GitHub on the effect, can use, You can't use your own time to change it. However, with the work experience and the nature of the work, it is increasingly felt that customizing the view is the time to take some effort to study. One, after these two days of efforts, I

Switch does not need to go through the initial configuration, direct access to the network can work properly, this is the development trend of the switch now. But this is a relatively unprofessional approach. Because if the relevant initialization configuration is not done, it is very unfavorable for the subsequent error and maintenance. If the name of the switch

I. Problems to be faced Intrusion detection systems (intrusion detection system, IDS) are the hot security products in the past two years, which play a role in the network security system can detect intrusion behavior and alarm. The intrusion behavior described here covers a wide range of activities, including not only hacker attacks, but also various network anomalies, such as the leakage of internal network confidential information and the illegal use of network resources, and so on. In orde

, also greatly stimulated the vast number of manufacturers in the network critical equipment, so that in a very short period of time from the traditional second-tier switches, to technologically advanced third-tier switches, and then to the recent launch of the fourth layer, or even the seventh layer of the product of the gratifying situation. Layer Fourth switch is different when the third layer switch is

The use of the SNMP protocol in switches I'm sure you're not unfamiliar, so let's go over 5 basic switch SNMP configuration commands in detail. The completion of the switch SNMP configuration commands is a common problem, how to complete the switch SNMP configuration commands, it also has any related password and so on, all will be comprehensively solved in this

To realize the mutual exchange between different VLAN and different network segment, it is necessary to use the VTP technology of the switch, the application of the switch VTP technology can reduce the management of the VLAN by the network administrator, and make the network administrator easy to add, remove and adjust the VLAN in the network and maintain the unity of VLAN programming. Set core

The gigabit router switch technology must meet several requirements without blocking. The gigabit router switch technology provides a detailed description of the requirements for non-blocking. This is a common problem. But how can we learn the Gigabit route switch technology more precisely to facilitate our work? Standard for selection of Route switches and five