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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
The ethernet switch technology has become more mature and stable. Because the Ethernet switches in the industry share many similarities with the switches we usually use, the design of the Industrial Ethernet switch also uses the principle of the commercial switch. With the rapid development of Ethernet technology and i
Ethernet switches are still commonly used, so I have studied the future development direction of Ethernet switches. Here I will share with you, hoping to help you. With the further construction of information networks in China and the further improvement of network quality, high-speed and high-performance Ethernet switches will become the mainstream of network pr
Ethernet switches are commonly used, so I have studied the working principle and advantages of the switched Ethernet technology. I would like to share with you here, hoping to help you. The combination of computer technology and communication technology has promoted the rapid development of computer LAN. From the emergence of ALOHA at the end of 1960s to the debut of the 1990s-Mbps switched
Ethernet switches are still commonly used. So I studied the comprehensive performance of the Catalyst 2950 remote Ethernet switch. I would like to share with you here, hoping to help you. Cisco's long-distance Ethernet switch can leverage existing copper infrastructure to meet high-bandwidth application requirements. Catalyst 2950 long-distance
With the continuous development of the network, the current network environment has been somewhat unable to adapt to technological advances, especially in the enterprise network, Enterprise Directors and IT managers hope that their networks can be secure and easy to use, however, different network segments cannot work together. The fact is that, even in the already successful Ethernet technology field, its functional and performance innovations contin
Interpreting L2 Ethernet ports and link types with experience L2 Ethernet port Vswitches include Access, Trunk, Hybrid, and QinQ layer-2 Ethernet ports. In this section, the Ethernet ports of the first three L2 switches can be added to a specific VLAN Based on the port VLAN division method. However, only the Hybrid po
Overview ARM mbed compatible action Arduino PIN compatible Ethernet (W5500 full hardware TCP/IP chip W5500 Ethernet Shield Design uses WIZnet W5500 chip. Please click Connect to get W5500 more content. Both 3.3V 5V voltages are supported. This Ethernet Shield with Arduino and ARM mbed Platfo
The development process of exchange technology Ethernet switch, English for switch, also someone translates as switching, exchanger or switched hub. We first review the development of the local area network. The combination of computer technology and communication technology has promoted the rapid development of computer local area network, from the advent of the Aloha in the late 60 to the 90-1000MBPS switched
What is a vswitch port? What is the role of the vswitch port? Vswitches cannot play their role in optimizing network performance. After reading this article, you will surely have a lot of GAINS. I hope this article will teach you more. In an Ethernet Switching environment, communication between two workstations is usually not intercepted by a third party. In some cases, we may need such listeners, such as protocol analysis, traffic analysis, and intru
The most important function of a vswitch is to speed up the fast data forwarding in a large local area network. The routing function is also used for this purpose, so the switch port issue is also very important, it is really not easy to set a vswitch port. In an Ethernet Switching environment, communication between two workstations is usually not intercepted by a third party. In some cases, we may need such listeners, such as protocol analysis, traff
Ethernet access technology is still quite common, and it is also a type of access technology that deserves our research. So I have studied the characteristics and advantages of the Ethernet access technology, and I will share it with you here, I hope it will be useful to you. With the rapid development of the Internet, IP has dominated various terminal applications, and no one will doubt the mainstream netw
The birth of VDSL is not as elegant as ADSL, but more and more people are paying attention to it. Recently, TP-Link, known for pushing low-end network products, also launched a VDSL switch TD-VF1008. Tu qianliang, Project Manager of the TP-Link product department, stressed: "The biggest benefit of VDSL is that it breaks through the distance constraints of Traditional Ethernet ." In fact, VDSL is similar to ADSL in terms of technical implementation. It
About the verification algorithm learning (learning Ethernet encountered) Ethernet header or data will have a check, the implementation of the IP core on the FPGA, with CRC Check, and then learn the ICMP protocol, also see a check algorithm, in order to learn the rationale behind the analysis.First, look at the ICMP packet format, mainly the ping command is used (there will be a specially ping C language im
The second wave of 802.11ac may force the upgrade of Enterprise Ethernet Switches The second wave of high bandwidth of 802.11ac may force enterprises to upgrade to a faster Ethernet switch in 2015. With the adoption of the second wave of 802.11ac wireless technology in 2015, many enterprises may need to upgrade Ethernet switches to support wireless network conne
How to solve the problem of Ethernet switch parameters the switch can be divided into Layer 2 switches, Layer 3 switches, and Layer 4 switches according to the working protocol layer, you can divide network-managed switches and non-managed switches based on whether the network management function is supported. This article will describe how to set parameters for the Ethernet switch. Packet forwarding rate i
Documents involved:(1) build/: Add Ethernet File support Pathmap.xml (2) framwork/base/ Android.mk Core/jni/android.mk Ethernet/ethernetstatetracker.java Ethernet/ethernetmanager.java Erthernet/ethernetmonitor.java Ethernet/ethernetdevinfo.java
1 Introduction With the development and maturity of Ethernet technology, it is widely used. The interconnection technology of Ethernet has also evolved from bus-type networks with dedicated coaxial cables to multi-layer switches. The efficiency and reliability of transmission and exchange are greatly improved. In a common commercial network, due to the high performance and scalability of switches, it has gr
Ethernet LAN with broadcast channel (down)--------- frame format (MAC)L Hardware address (Mac address ) of the MAC layerIn a local area network, the hardware address is also called the physical address, or the MAC address. ( address of the location)The "address" as stated by the 802 standard should be strictly the "name" or identifier of each station. In fact, our textbook address is not very accurate, but we are accustomed to this type of "name" is
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