Hi every one i am trying to understand vlan behavior on tagged and untagged packets.i have come across these statement which sounds quite confusing to me When a tagged packet enters a port, the de...

I have a small TV box device running Android. Whenever I bring up the Wi-Fi interface, the Ethernet interface is disconnected. If I then bring up the Ethernet device, the Wi-Fi interface. I have t...

I have modbus mapping setup in my AB Micro820 PLC. I have an array in 40001 for writing, and one in 42001 for reading. Both are 200 elements and REAL type (32-bit float). I can write and read curre...

I think baud rate is the rate of the symbols, and if each symbol contains n bit, then the bit rate should be n x baud rate In Ethernet( Manchester encoding) ,if bit rate is half of the baud rate, ...

I have a pcap captured with Wireshark. Is there any function in Wireshark that will strip Ethernet layer from the result? Or any command line tool to do it?

It is fairly easy to create IP, TCP or UDP sockets using boost::asio library. But when it comes to Ethernet sockets for instance, you need to implement boost/asio/basic_raw_socket.hpp As there are...

I primarily come from an Embedded Software background and hence I have very limited knowledge about hardware in general. I always use to think Ethernet as that little physical connector on your com...

I'm trying to assign the IP Address of the device to a String variable. When I use Serial.println(Ethernet.localIP()) to test it displays the IP Address in octets. If I use String(Ethernet.localIP(...

I need to have a project done in a few days, its a basic client and server interface. The catch is that it needs to be all raw sockets. I have no problem with creating that, I am just stuck on send...

I'm using Android with Api level 8 and I want to get the Address of my Ethernet interface (eth0). On API level 8, the NetworkInterface class don't have the function getHardwareAddress(). The WifiM...

I would like to know is it possible to do memcpy by bits instead of bytes? I am writing a C code for Ethernet frame with VLAN tagging, in which I need to fill different values for VLAN header attr...

using this script I am trying to detect if there is a network link. I am failing in putting multiple commands in one line (ethtool...). What to do? #!/bin/bash COMMAND="( /sbin/ethtool eth0 ) | (...

In Ethernet PCI device driver if the driver allows applications to map user-space buffer to Driver virtual memory and allow the user to call MMAP on device driver file after opening it. Then how do...

sock = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); setsockopt(sock, SOL_SOCKET, SO_ATTACH_FILTER, &f, sizeof (f)) With this simple BPF/LPF attach code, when I try to receive packet on the ...

Have to implement a server for handling the following protocol through Ethernet connection: Establishing a connection The client connects to the configured server via TCP / IP. After the connection...

I'm trying to make a list of all MAC addresses that are reserved, do not exist, should not be used, should only be used locally etc. (Just like the list of reserved IP-addresses on Wikipedia, but f...

I have very basic question regarding Rx/Tx Hardware Queues in Ethernet Controller, what its used for ? While looking at the following driver in Linux kernel, its seems like it is used to carry DMA...

How do I get the MacAddress of an Network Card using Delphi ?

I want to connect two Docker containers, defined in a Docker-Compose file to each other (app and db). And one of them (app) should also be connected to the host network. The containers should be co...

I have a C# TCP server application. I detect disconnections of TCP clients when they disconnect from server but how can I detect a cable unplug event? When I unplug the ethernet cable I can't detec...

I'm working on a balloon project with a Raspberry Pi. When we potentially recover the Raspberry Pi, it will most likely be in a rural location and I'd like to turn off the Pi at that point sa...

I'm very confused about exactly how the AF_PACKET socket family (for SOCK_RAW sockets) specifically relates to Ethernet (IEEE 802.3). What I understand so far: I understand the OSI Model, and ho...

I have a small issue regarding Ethernet. My three questions are: Can we programmatically Turn-On/Off Ethernet? Can we programmatically Enable/Disable Ethernet? Can we programmatically Connect E...

I just bought new ENC28J60 Ethernet LAN Network Module on Ebay, and I want to send POST Data with this module to specified web address eg. www.mydomain.com/example.php I resereached google for so...

I am developing an Android app which will be used by custom devices which will have ethernet support (and also wifi). The app has to enable a settings activity for Ethernet. Please NOTE that the...