How Do U Make A Frame 64 Bit,Bessey Welders Angle Clamp,Woodworking Bench Vise Reviews Korea - Test Out
Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. Perhaps this is better to ask an electronics engineer because it might have to do with something at the physical layer rather than programming. How do u make a frame 64 bit we all user ethernet, and I know that the minimum frame size is 64 bytes but I've never bothered to ask why that is the case.
Until now! So can someone help me out? Why does it have to be 64 bytes long? Minimum packet size is chosen on the basis that in case of half duplex, the sender should be able to detect collision before it finishes sending the frame. But for 1Gbps, LAN length comes out to be only So the solution proposed was to increase the minimum ethernet packet size to bits, i.
A device can start sending a frame at any time when the network is idle, so it has to check for collisions with other senders who start at the same time. Frames take some time to propagate depending on the number of HUBs and cable length. You want to detect a collision before you finish sending your frame, so you can insert a jamming code to abort properly. For this you need a minimum frame size. Today with switched networks this is no longer an issue, but one of the golden rules of the Ethernet standard is that the frame format never changes.
In addition, with todays network speeds, the per-packet processing time can become a performance problem. With a minimum size you have at least some guaranteed number of clock cycles available to process each frame e. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Why is the minimum ethernet frame 64 bytes? Ask Question. Asked 5 years, 5 months ago.
Active 2 years, 11 months how do u make a frame 64 bit. Viewed 9k times. Improve this question. Do you mean why isn't it smaller? Thats because there is a minimum length enforced on the frames payload to allow collision detection to work reliably. Oct 9 '15 at Minimum frame size is 64 bytes not bits including CRC. But why is that the case? Show 1 more how do u make a frame 64 bit. Active Oldest Votes.
I read one article long time back. I liked the explanation. For Mbps, LAN length comes out to be m which is also good enough. So max LAN length becomes I don't know why they chose only this length. Improve this answer. Adi Adi 1 1 silver badge 7 7 bronze badges. There are no collisions on a full duplex, only switches, Mbps lan. This answer is trying to explain why the packet size was increased for Mbps.
But doesn't explain why it was 64bytes. Add a comment. This answers why there is a minimum frame size, but how do u make a frame 64 bit isn't really the question. The question is why is the minimum frame size 64? Why was that chosen? I don't know that, but I guess it has to do with being a power of two and with an engineering choice about maximum number of repeaters HUBs in a network back in Sign up or log in Sign up using Google.
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