ethernet expander

D-LINK brand Gigabit Ethernet switch is relatively high cost, if the general individual users have conditions, but to feel, the price is not very expensive. In the network, hardware and software are only tools, and the most valuable information is the information flowing in the network. With the accumulation of enterprise information data, the demand for information data backup and sharing is growing, and the requirements for storage are also increasi

Step 1 in the online world: what is an Ethernet switch? a switch in the broad sense is a device that completes information exchange in a communication system. Of course, we have already popularized programmable switches, and the exchange process is automatically completed. What is an Ethernet switch? Switching refers to the technology that sends the information to be transmitted manually or automatically by

The non-blocking mechanism of GE Ethernet switches provides full-line rate switching for your network, making it easy for you to use. In the network, hardware and software are just tools, the most valuable information is the information flowing in the network. With the accumulation of enterprise information data, the demand for information data backup and sharing is growing, and the requirements for storage are also increasing. The complexity of enter

These things will not be confused, because they are not a level of East, now think about the early I feel some do not understand because the agreement is in the abstraction layer is not clear, the knowledge should be from the bottom solid walk.First, the agreement is not big, the agreement is the two sides agreed to abide by the norms, only that. The data transmission between the Internet is on the Ethernet, and it needs to do some processing before i

Generally, the Integrated Wiring System is updated every seven years. It takes five years to replace the three-category system with the Five-category system. It takes only three years, cat6 systems are mature and increasingly widely used. It is a trend to implement Gigabit Ethernet in cat6 systems, and standards for cat6 systems are being formulated and initially implemented, bringing copper cabling systems to the fullest is the latest goal of 10 Giga

Because of the actual use of the requirements we test the network communication, on the NUCLEO-F412ZG Test board does not have an Ethernet section, we choose to add a W5500 experimental board. W5500 supports SPI interface communication, dc3.3v feed. And the NUCLEO-F412ZG Test board has SPI1 each pin Spi1_nss (cn7_17), Spi1_sck (cn7_10), Spi1_miso (Cn7_12), Spi1_mosi (cn7_14) to the CN7, The 3.3VDC and GND also guide the CN8, which can be easily implem

1. Introduction The IEEE 802.3z Gigabit Ethernet Standard, adopted in June 1998, describes 3 physical layer interfaces (1000BASE-SX, 1000BASE-LX, and 1000BASE-CX) that are used for a universal link encoding and can be 1000mb/s transmitted. 1000BASE-SX, 1000BASE-LX interface using optical fiber as a medium, the farthest transmission distance of up to 5000 meters, so can be used in buildings or campus backbone network. The 1000BASE-CX interface is plan

Layer-3 Ethernet switch: introduces L2 VLAN forwarding, configurations in layer-3 Ethernet switches, MAC addresses, and L2 VLAN forwarding, I hope you will have a clear understanding after reading the following articles. The forwarding mechanism of a layer-3 Ethernet switch is divided into two parts: layer-2 forwarding and layer-3 switching. First, let's talk abo

During this period, I read volume 1 in "TCP/IP details". The biggest feature of this book is that it uses the tcpdump program to capture various network packages, this gives us a definite understanding of the protocols and Algorithms in each layer of the network. It is the protocol discussed in this book and its hierarchy. 1. TCP/IP protocol network hierarchy The left side shows the status of the data packet at each network layer, and the right side shows the transmission of the data packet at e

Regional Metro wide area three-way Attack The 10-Gigabit Ethernet technology breaks the limits of Traditional Ethernet short-range transmission. In addition to lan and campus networks, it can also be easily applied in the city or even wide area to build a high-performance network core. Broadband IP MAN The 10-Gigabit Ethernet device can provide high-density 10-

Industrial Ethernet cabling and fault Maintenance The industrial environment is worse than the general environment. At least the vibration, moisture, and temperature are worse than the general environment. Industrial Ethernet requires more professional knowledge and practical experience. If you are installing or using an industrial Ethernet (Industrial

Copyright: Chengdu Heng Yuan Internet of Things Technology Co., Ltd.Website: www.heryit.cnTel: 028-87657875 13060063607Introduce the configuration of stm32f107 Ethernet and porting rl-tcpnet protocol stack, the official routine is LWIP, here is how to use rl-tcpnet. (need to include STM32_ETH.C and STM32_ETH.H)Here is the descriptor definition, what is the descriptor please see the STM32 Chinese Reference Manual E