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Questions tagged [ethernet]

Ethernet is a set of networking technologies widely used to interconnect computers.

Ethernet is a set of networking technologies widely used to interconnect computers at the physical (layer 1) and link (layer 2) levels. The capability of Ethernet has matured to the point where it is used for both basic desktop computer networking and for carrier-grade networks where operators must guarantee quality of service.

More information at http://en.wikipedia.org/wiki/Ethernet

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If I bridge two network cards, does the bridging happen at the OS level or the hardware level?

I've written a C# app which listens to a lot of multicast streams. I'd like to run two copies of the program, one for recording, one for reacting to the data. I'm curious: if I create a virtual network adapter, and bridge this network adapter to an…
Contango
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Identifying a frame, Ethernet or IEEE 802.3?

I've been asked to determine whether a frame is an Ethernet or IEEE 802.3 frame. I have researched Ethernet and IEEE 802.3 and found the format of each frame, but nothing about the frame in question points to eithe rof these This is the frame : 000f…
Sosy
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Easy Button to UDP Packet - Control board terminology

For those who deal with microcontroller programming... I want to take a momentary contact switch (let's say a Staples Easy Button, since that's the most fun momentary contact switch around), and when it is pressed, send a broadcast UDP packet across…
Brandon
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Ethernet FCS when capturing wth Wireshark under Linux

Is there some way to get the Frame Check Sequence (FCS) from an ethernet frame when using Wireshark to capture packets under Linux?
Warren
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DHT22 (sensor) to Pachube via Arduino with Ethernet shield error

I'm trying to connect a DHT22 sensor to the Pachube online service. I am understanding the code and have everything wired up correctly but I get this error: DHT22 Library Demo Requesting data at 6335 Sync Timeout What does sync timeout mean? Is…
asselinpaul
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Arduino Ethernet and DHCP cannot communicate out to the Internet

I have this web client example that gets an IP address via DHCP. It connects to my router at IP address 192.168.0.1 successfully, but then it fails to send a GET HTTP to google.com. Essentially, I cannot allow the traffic from Arduino to go out into…
Daniel
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MAC address randomly changes when bringing interface up

Every time I start my network interface, I get a different MAC address! If I try to force the MAC address value using ifconfig usb0 hw ether AA:BB:DD..:FF it will be again different after issuing ifconfig usb0 up What make this MAC address change?…
Fafaman
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Constructing (a) valid and (b) minimal size unicast, broadcast & multicast ethernet frames

I have a "KSZ8851SNL eval board" (link) which is an ethernet device and is an "SPI slave" for my "SPI master" which is "ST Nucleo F429ZI" (link). I have written a driver that runs on "SPI master". With the driver I initialize "SPI slave" with a MAC…
71GA
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Using arduino Ethernet.h under Eclipse

I want to use eclipse for Arduino development and I have some issues. I use Eclipse + Eclipse AVR plugin + WinAVR. I managed to compile the Arduino core library into a static library. Now I want to use my ethernet shield but I can't find a way to…
kechap
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Low level /Register programming of Ethernet Peripheral on TI's Sitara AM64x

I am using TI's SK AM64x, which has an AM6442 SoC. People who have worked on the Beaglebone family or just TI's Sitara in general, please help. I need help programming the Ethernet Peripheral (CPSW3G) on the SoC for my application. Back…
Bubu
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How to enable eth0 on Banana PI ZERO M2

By default, eth0 is disabled on BPI ZERO M2. Here we will show to enable it
Bruno Poultier
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Docker container can't access Basler GigE vision camera

We use docker container for python project. We create all files and we need to connect basler camera via GigE vision protocol. We grab frames with pylon viewer very well. What can we do for access basler cam? we applied this code snipped; docker…
erenpostaci
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How do I see what is tr balance of a smart contract?

If I send some ether to a samrt contract address, what function can I use to check the total balance of the smart contract? To send ether to smart other wallet address from smart contract, is there any special function in solidity or mere…
Blockchain Kid
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Receiving data using Ethernet from multiple Arduinos on Python program

We are trying to use Ethernet communication in order to have multiple Arduinos (acting as servers) push alerts to a Raspberry Pi acting as a client) using socket programming. We have the following code but it only prints data1 after some alert is…
maria khan
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How to determine MTU between my cable modem and ISP?

I am trying to understand the "big picture" of MTU. Specifically, many discussions of MTU focus on a single hop (e.g. laptop to router), so the natural question is: how to determine MTU between cable modem and ISP, or more generally, for any given…
Peter Skirko
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