Stack Overflow
Stack Overflow

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

1632 questions
3
votes
1 answer

What does an ethernet header look like?

What does the ethernet header look like? Is it: 1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31| ..................................destination…
user2025406
  • 55
  • 1
  • 1
  • 8
3
votes
3 answers

10 gig ethernet in Java?

Does Java 6 support 10 gig ethernet out of the box? It seems like it shouldn't require Java changes, but I thought I remembered that Java 7 was adding 10 gig support.
Ted Graham
  • 3,511
  • 4
  • 24
  • 25
3
votes
2 answers

Renaming the network interface name via command line

I want to rename the network interface name to a default name, for example "Ethernet", via dos. I know netsh interface set interface name=”Local Area Connection” newname=”Ethernet” is the way to do it. I am running a script and it will not know the…
Kiran6699
  • 454
  • 3
  • 6
  • 15
3
votes
0 answers

Android Broadcast receiver for RJ45 ethernet cable

I am creating a sample code, for detecting whether the RJ45 cable is connected or not. I have written a broadcast receiver for the detecting. @Override public void onReceive(Context context, Intent intent) { String action =…
user1948220
  • 73
  • 1
  • 1
  • 7
3
votes
1 answer

Overhead with PPP and Ethernet

What is the overhead for PPP and Ethernet sending 5000 bytes? Frame size for Point-to-Point Protocol: 8 bytes MTU: 500 bytes Frame size for Ethernet: 18 bytes MTU: 1500 bytes Both sending 5000 bytes.. I know this is just a calculation, but I am not…
irl_irl
  • 3,785
  • 9
  • 49
  • 60
3
votes
1 answer

Programmatically detect connected network speed on Windows

How can I detect what kind of Ethernet connection my NIC made? That is, my NIC is a Gigabit Ethernet device, but since it's auto-sensing, it might be connected at Gigabit speed or Fast Ethernet speed. How do I find out what speed it is being…
pepoluan
  • 6,132
  • 4
  • 46
  • 76
3
votes
1 answer

How to use select() for waiting ethernet interface state changes?

My program must detect when an ethernet interface turn to RUNNING state. I can poll the running flag by using ioctl(): if( ioctl( dummy_fd, SIOCGIFFLAGS, &ifr ) != -1 ) return ifr.ifr_flags & IFF_RUNNING; But want the information immediately…
SKi
  • 8,007
  • 2
  • 26
  • 57
3
votes
1 answer

Confused about the header size for a Ethernet frame

I was researching a few things about VLANs and came across the VLAN tag and also the headers. If we have a MTU for a standard 802.3 Ethernet frame (1518 bytes) what is included in the header 802.3? Also how do we calculate the header length for…
Bic B
  • 201
  • 2
  • 6
  • 18
3
votes
0 answers

TI OMAPL137 U-Boot Error: "No ethernet found."

I am trying to boot a DA830 REV A board that was shipped to me with U-Boot loaded without Linux. I was able to build DaVinci Linux and a root file system, and now I want to load Linux using tftp. I booted the board but am getting an error that "No…
Samuel
  • 8,063
  • 8
  • 45
  • 41
3
votes
1 answer

How to send emails with an Arduino without using a computer?

I'm experimenting with my Arduino Mega. I also have an Arduino Ethernet Shield. I need to send emails using them, without the help of a computer (or any other device; like a smartphone, etc.). Though I could find several articles, I couldn't find…
Anubis
  • 6,995
  • 14
  • 56
  • 87
3
votes
1 answer

NDIS and miniport driver

I am trying to modify a ethernet driver using WDK tools provided in Visual Studio 2012. The samples provided in the WDK are 'miniport adapter' and 'NDIS Light Weight Filter' among others. I am still at the very beginning of driver writing and hence…
Aditya Tantry
  • 65
  • 2
  • 8
3
votes
2 answers

How to get nic card name

Anybody knows how to get nic card name when I do ipconfig/all I can get this Ethernet adapter XC99HT: Connection-specific DNS Suffix . : xx.xx.com Description . . . . . . . . . . . : HP NC382i DP Multifunction Gigabit Server Adapter …
John Ryann
  • 2,283
  • 11
  • 43
  • 60
3
votes
2 answers

Creating a network adapter - how hard is it?

I'm interested in building a little (commercial) device on top of Arduino. I want it to be able to interface with network. Network as in standard Ethernet, Cat5, RJ-45, etc. I know that there is an Ethernet Shield, but it costs even more than the…
Vilx-
  • 104,512
  • 87
  • 279
  • 422
3
votes
2 answers

The same driver for multiple network cards -- performance bottleneck?

I'm using driver e1000e for multiple Intel network cards (Intel EXPI9402PT, based on 82571EB chip). The problem is that when I'm trying to utilize maximum speed (1GB) on more than one interface, speed on each interface starts to drop down. I have my…
anon
2
votes
6 answers

Arduino DHCP failed to configure

I am using the example ethernet sketch for a web client that comes bundled with the Arduino software without changing a thing except for the firmware address, which I changed to the one printed on the back of the ethernet shield. Whenever I connect…
Andrew
  • 3,901
  • 15
  • 50
  • 64
1 2 3
…
99 100