Use Petalinux 2017.1 to generate Zynq 7020 Linux Mirrors
Problem phenomenon:1. Uboot Ethernet PHY rtl8211e works fine, but Linux cannot be found after startup eth02. Linux system startup prompt: MACB e000b000.ethernet:01 no PHY found
Possible causes of the problem:
Cadence MACB Linux Driver is not compiled into the kernel.Workaround: Configure the kernel to Cadence MACB Linux DriverPosition:-> Device Driver
Why is there a limit to the minimum frame length and maximum frame length in traditional Ethernet?Ethernet (IEEE 802.3) frame format:1, Preamble code: 7 byte 0x55, a string of 1, 0 interval, for signal synchronization2, Frame starting delimiter: 1 bytes 0xd5 (10101011), indicating the beginning of a frame3. DA (Destination mac): 6 bytes4, SA (Source mac): 6 bytes5, type/Length: 2 bytes, 0~1500 reserved as
Software download for analysis: Wireshark-win32-1.10.2.exeRead the guided Tour1. Installation and use of learning Wireshark2. Familiar with the operation interface and function of Wireshark3. Design an application to acquire an Ethernet link data frame4. Analysis of Ethernet link data frame format and content1. Installation and use of learning WiresharkDownload and install the network pack software wireshar
Java| block chain development and communication group: 613121183
Interested can also add ha, provided a lot of block chain information, there will be data can be met to share ----------------------------- Lihe August 28, 2016 Many people are puzzled by the block chain and the ether square, Do not know how to learn, this article simply said some of the learning methods and resources.I. The relationship between the ether Square and the block chain
From the history of the Block chain, the first bir
This article describes how to configure an Ethernet interface from a specific instance and provides detailed operation steps and commands. The following article will benefit you a lot.
When configuring the Ethernet interface, we need to configure the IP address and subnet mask for the Ethernet interface for IP packet processing. By default,
The format of the Ethernet frame is as follows: 802.3 Ethernet frame structure forward code frame start character MAC destination address MAC source address 802.1Q label (optional) ethernet type or length load redundancy verification frame spacing 10101010 7 octet 10101011 1 octet 6 octets 6 octets (4 octets) 2 octets 46-1500 octets 4 octets 12 octets 64-1522 oct
Win8 Ethernet connection to identify the network win8 Ethernet connection to identify the network reasons may be as follows: 1. Conflict with the wifi network: solution: Disable the wifi network adapter, restart Ethernet Adapter 2 · conflict with Wired Broadband (limited bandwidth is often set as the default connection, for example, using wired broadband at home,
Analyzes the alarm control tasks and monitoring tasks of the Gigabit Ethernet switch. The two tasks of the alarm Group of the Gigabit Ethernet switch may not have a specific mode, therefore, the following alarm monitoring task Questions and Replies provided by netizens may not help you to obtain events. If no event exists, the operation is blocked.
An alarm group consists of two tasks: One alarm control ta
The air on the weekend was sultry, and the thought of it would never rain again. Every weekend, I will sum up all the things of the week, whether at work, in life, or on the way to and from work, or after reading, because it is no longer raining, I decided to have a good sleep on Saturday evening.When I explained the principles of vswitches and hubs to my colleagues, I thought that hub is a more efficient choice, what is the difference between iptables's simple cluster target and F5's high Serve
The Go-ethereum client is built, and after it is done, we can interact with the nodes in various ways (JavaScript Console, JSON-RPC, WEB3, etc.). More than just the etheric square, the nodes in the block chain typically provide interfaces, and are the interface of the JSON RPC, most of which are interacting through JSON RPC and nodes. Use JSON RPC to tune functionality and pass data.Actually went to call some of its ways. By exposing some of the JSON RPC protocols and then going to call some int
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
In the switched Ethernet environment, the communication between the two workstations is not heard by the third party. In some cases, we may need to do such listening, such as protocol analysis, traffic analysis, intrusion detection. For this we can set the span (switchedportanalyzer Switch Port Analyzer) feature of the Cisco switch, or the early "port mirroring", "Monitoring port" feature. The object that the listens to can be one or more
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