What is Ethernet?

✅ C'mon over to realpars.com where you can learn PLC programming faster and easier than you ever thought possible!
=============================
✅ Check out the full blog post over at realpars.com/ethernet/
=============================
Have you heard of IEEE 802.3? It has a long history and has to do with our topic today, Ethernet.
Ethernet is a communication standard that was developed in the early ’80s to network computers and other devices in a local environment such as a home or a building.
This local environment is defined as a LAN (Local Area Network) and it connects multiple devices so that they can create, store and share information with others in the location.
Ethernet is a wired system that started with using coaxial cable and has successfully progressed to now using twisted pair copper wiring and fiber optic wiring.
Let’s break for a trivia question. Who invented twisted pair wiring?
Alexander Graham Bell invented twisted pair wiring in 1881.
In 1983, Ethernet was standardized into the standard IEEE 802.3 by the Institute of Electrical and Electronic Engineers (IEEE).
This standard defined the physical layer and the MAC (media access control) portion of the data link layer of wired Ethernet.
These two layers are defined as the first two layers in the OSI (Open Systems Interconnection) model
The “physical” layer consists of the following components: Cabling and Devices.
First, let’s take a look at Ethernet Cabling;
As stated previously, Ethernet cables come as coaxial cable, which is not very common except in older installations, twisted pair, and fiber optic.
The most common cable is twisted pair cables, with the latest being Category 6 with speeds up to 1 Gbps and Cat6a and Cat 7 with speeds up to 10 Gbps.
Category 5 and 5e cables are both still used in many existing applications but handle the lower speeds between 10 Mbps to 100 Mbps but are more susceptible to noise.
The Ethernet twisted pair utilizes RJ-45 eight-pin connectors at either end of the cable that is pinned for transmitting and receiving data in either half or full-duplex mode.
=============================
Missed our most recent videos? Watch them here:
realpars.com/fieldbus/
realpars.com/function-block/
realpars.com/devicenet/
=============================
To stay up to date with our last videos and more lessons, make sure to subscribe to this KZbin channel:
goo.gl/Y6DRiN
=============================
TWEET THIS VIDEO ctt.ac/w2y8i
=============================
Like us on Facebook: / therealpars
Follow us on Twitter: / realpars
Follow us on LinkedIn / realpars

[@handsome-soup3294]

Wow you liked all the comments even after 1 year

[@unknownplayer10k]

ikr this is crazy

[@AyzahGardezi]

It's a sign of a genuinely caring and supportive teacher

[@arjumandvillagecooking]

😀

[@bobbebusybuilding7413]

Nope probably just a bot

[@A_c-pg7ee]

That’s dedication

[@flamingmoose1479]

Thank you. I'm trying to get certified to work in networking and using a textbook alone has been rough, but with your videos and visuals everything comes together and makes way more sense.

[@realpars]

Thanks a lot for your kind compliment! We are always extremely happy to hear such positive feedback! In that case, you might be interested in our free course on PLC Hardware as well bit.ly/2XnnUrF If you ever have any questions, feel free to reach out to us. Happy learning!

[@bertmacklin467]

Lmao is it the Mike Meyers book?

[@aguerrousj2008]

Great video, Free CCNA and CCNP Courses that will boost your networking knowledges kzbin.info/www/bejne/d4fHpauXbtSpr68

[@MSP_-wp5fb]

@@bertmacklin467 Thats what I'm using at the moment and his video series. Pretty good tbh but just some terms like Ethernet are so vague lol so thats why im here

[@radishpineapple74]

A couple things: 1. As others have said, cat 5e can be used for 1 Gbps speeds. 2. CSMA/CD is no longer needed for full-duplex switched networks, each link is isolated and collisions are eliminated. Indeed, half-duplex links are no longer specified in 1 Gbps Ethernet, and aren't allowed at all in 10 Gbps. 802.11 Wifi does have collision issues due to its half-duplex nature, but it uses a related CSMA/Collision Avoidance method instead.

[@isumitd9586]

Could you explain in brief which 802.11 wifi, wifi 1 or 2or 3 has collisions due to half duplex property & which haven't???

[@seanbaxter44]

nerd

[@Marvin-cp1cc]

@@seanbaxter44 he may not be a nerd at all, some people actually learn this at school

[@verdejr]

Wth

[@Redfield-hk8nn]

this is one of the best videos I have ever seen on youtube thanks for that!!!! Way to good!!!!

[@realpars]

Thanks for your support!

[@adrian-linisteanghel750]

RealPars thank YOU for the great explanations !

[@seanbaxter44]

ur joking. ik it has loads of info but thare is WAY better stuff than this

[@tokughachisho5814]

@@seanbaxter44 true

[@seanbaxter44]

@@tokughachisho5814 so true

[@timothykearns2232]

Bell invented twisted-pair wiring to counteract capacitance found in non-twisted pairs. "Loading" coils were also added at pre-determined distances. XL and XC cancel themselves out in tuned (resonant) circuits, making the "load" purely resistive. Telephone lines weren't "resonant", but every little bit helped....oops.....XL and XC are inductive and capacitive reactance, respectively. If I've made any errors, please advise.......I retired almost 9-years ago, and my memory of such things is flagging.

[@waynezahra9213]

Hey Mr, Im learning about networking. Even though I understood what I was reading, you’ve made of far easier for me to have a mental image in my mind and also to give a clear understanding how Ethernet works. Thank you kindly. Now I must watch your other videos on networking. Wishing you a great day 🙏🏻

[@realpars]

Thanks amazing, Wayne! Keep up the learning curve!

[@Blades-fm6ck]

These great videos are so clearly explained. Clear speech, no distracting background music & excellent graphics.

[@realpars]

Glad you like them! Thanks for your kind support

[@cindrasenareddy1929]

wtf is sheffield united fan doin here?

[@laszlozoltan5021]

I wish I had seen this video ages ago before tearing my hair out for days while setting up my asus router- not many home consumers have had the benefit of any technical training, while many troubleshooting links proved to be information-runarounds. good job on clarity

[@realpars]

Luckily you have come across it now. Thanks for your comment! Happy learning.

[@seanbaxter44]

@@realpars yessir

[@emmanuelsanusi1389]

Thank you Realpar team. You're really making impact !!!!! More strength !!!!

[@realpars]

Great to hear! Thanks for the support :) Happy learning.

[@fujiwxrx32]

This is very useful for my polytechnic engineering research work. Thanks alot guys!

[@realpars]

Great to hear, Abu! Good luck with your research. You are very welcome.

[@yousefhesham4317]

thank you very much ccna i have learned and you learned me so much from EGYPT

[@realpars]

You are very welcome! Happy learning.

[@kxi]

ooo from Egypt nice

[@MaNemUmar]

Loving the Diversified approach to industrial automation technology !

[@James_Knott]

I have a couple of comments to make about this video, however a bit about myself first. My first experience with a LAN was in early 1978 on the Air Canada reservation system. This LAN used Time Division Multiplexing (TDM), not packets, over coaxial (@2 Mb) or triaxial (@8 Mb) cable and was part of a computer system made by (Rockwell) Collins. My first Ethernet experience was with DECNet connecting VAX 11/780 computers, over 10base5 "Thicknet" cables. My next experience was hand wiring Ethernet controllers, on prototyping boards, for Data General Eclipse computers. I got my Novell Netware CNA about 25 years ago and Cisco CCNA more recently. I have also worked with Token Ring. So, I know a thing or two about networks. As for the points about this presentation, Gigabit Ethernet was designed for use on plain CAT 5 cable and predates 5e, which is just CAT 5 with tighter specs. So, CAT 5 will work fine at 1 Gb, for up to 100M (330"). Also, CSMA/CD is used only for half duplex, as you'd find with coax or hubs. It is not used with full duplex, where collisions are not possible. With CSMA/CD, collisions are normal within the first 512 bits and will trigger re-transmission, with random back off, to avoid additional collisions. There are 3 "official" versions of Ethernet, which followed the original experimental version which ran at 2.91 Mb and had an 8 bit MAC address. The 3 versions are the original DIX 1.0, DIX 2.0 and 802.3. The main difference between 1.0 and 2.0 is the first field was changed from "Type" to "Ethertype/Length" to accommodate 802.3. If the contents of this field is 1500 or less, it's 802.3 or DIX 2, if above 1536. IP normally uses DIX 2. The old Netware IPX used 802.3. There is some more info on Wikipedia: en.wikipedia.org/wiki/IEEE_802.3 And here's a link to the original DIX 1.0 "Blue Book" spec: gordonbell.azurewebsites.net/Ethernet_Blue_Book_1980.pdf Here's an excellent reference: www.oreilly.com/library/view/ethernet-the-definitive/9781449362980/

[@realpars]

Hi James, Thanks for sharing your knowledge with us! We always appreciate such input, many thanks!

[@cyrox1859]

winderful as usual, very informative and deeply explained, thank you

[@varunk6633]

Me watching this video after 4 years of communication engineering. I regret my choices in college.

[@syedshoaib7233]

Me too😂

[@nguyenconghuy3847]

the way they teach in colleges is lack of visualization

[@TrionityIr]

As an electrical engineer trying to learn networking for my job, this is fantastic. Thanks

[@realpars]

Thank you very much!

[@eleleugochukwu6805]

I had zero knowledge on networking. That story today is different. Thanks for your videos

[@tianhaowang5012]

good images, good animations, clear voice, informative explanation. I honestly do not know what else you can do to make this video better

[@realpars]

Thanks a lot for your compliment, Tianhao! We are happy to hear that. Happy learning!

[@addalad7144]

A less painfully boring voice

[@sushilgharat7823]

Always a great video's from RealPars... Visualisations are awesome.. Cleared all queries about topics.. Thank you so much..

[@realpars]

Thanks for your support, Sushil!

[@melquiadesdelgadoramirez680]

That´s why I recommend your videos, they really leave upstanding information on us. Keep doing your great job!!!

[@realpars]

Thanks a lot! We are very happy to hear that. Happy learning!

[@malecadam8182]

I love when channels read, Like, and even Answer comments! You are awesome!

[@realpars]

We certainly do! :) Thanks for your support, Malec

[@malecadam8182]

@@realpars u got my sub! And thank you!

[@ycombinator765]

Remarkable and beautifully aligned! Thanks RealPars!

[@realpars]

Thanks for your support!

[@sprugner]

Very well explained, thank you for all the work you put into this video. 👍

[@BK-rh1lj]

I guess he miss this comment

[@null207_tc]

wow he missed this

[@realpars]

Missed by mistake! Our apologies :)! Thank you very much for the support.

[@kunalsrivastav2913]

the most clarified video i have ever come across on ethernet. Thankyou.

[@realpars]

Thanks a lot, Kunal!

[@1200halo]

This is an amazing channel I am so glad I found this, thank you

[@realpars]

Amazing! Thanks for your kind comment, Justin.

[@WXUZT]

Thank You. Wish such visual based learning was available during my Engineering College Times !!! That’s all !!!

[@realpars]

That's an amazing compliment! Thanks for sharing and happy learning.

[@ankitaboruah8818]

This video is so great! Very informative and the diagrams help in visualizing the things in our minds.

[@realpars]

Great to hear that, Ankita! Thanks for sharing.

[@netdesign3984]

hi.. ANKITA

[@agstechnicalsupport]

Ethernet well explained, with simple words and diagrams. Thank you !

[@realpars]

Glad it was helpful!

[@cam5580]

wow I learnt more from this video than half a year of school, thanks man

[@realpars]

Great compliment! Thanks a lot!

[@saikumargudimetla6048]

Yes

[@saikumargudimetla6048]

I also

[@vedantchoghala6642]

Me too haha

[@muhammadtaha07]

Absolutely amazing video!

[@hirokihiro427]

I learned both Network and English Your talking pace and pronunciation are perfect for me(japanese)

[@realpars]

Great to hear! Keep up the learning curve! :)

[@LindeSir]

Basically Cat5e is 4 pair (8 copper wires) White, White Blue, White, White Orange, White, White Green, White White Brown. This is your standard Cat 5e layout for DVO jacks and how they would be made on ends. Sometimes in the world too you could see the White, White Green and White, White Orange swapped around. That is to give Power Over Ethernet for devices that are using a PoE injector to get power like an outdoor satellite in some instances

[@user-fl5mn1de1q]

I love your videos and your topics. Thank you a lot for helping us. You don’t know how much help you are providing. I wish you a happy life 🌷.

[@realpars]

You are so welcome! Many thanks for your kind support. Truly appreciated!

[@aqeiwwrgunaug4ne3]

I knew most of this but didn’t know how it’s connected. Great video

[@realpars]

Thank you!

[@tumblelandproduction]

I always had difficulty understanding what ethernet is. You have done a fabulous job at solving my difficultly. Job well done.

[@realpars]

We're very happy to hear that, Arec! Thank you for sharing

[@velumuru5060]

Best explanation to reach who watched this video..i ever see before, also video logically appears to understand easily. Thank you for sharing this video.

[@realpars]

You are most welcome!

[@ShivamSharma-sn1yb]

Thank you very much sir , This video contains actually what i need🙏

[@realpars]

You're very welcome, Shivam! Great to hear that.

[@dj_yaoi]

really great video! so much easier to understand than the course im doing

[@realpars]

Glad it was helpful! Always feel free to leave us any questions - we're more than happy to help.

[@charmainechiedzachiangwa8715]

thank you for the explanations its making my work easier

[@realpars]

Happy to hear that, Charmaine! Thanks for sharing.

[@TheOdosu]

Thanks to this video, I could easily understand this topic

[@realpars]

Great to hear that. Happy learning!

[@Dr_Larken]

I just came across your channel! After I made sure this channel was still posting I immediately subscribed!

[@realpars]

Glad to hear that! Thank you!

[@KTHKUHNKK]

You explained it quite thoroughly and simply. Even though this is all going to take a while to sink in it's very fascinating stuff.

[@realpars]

Thank you, Keith!

[@cristinamagurean100]

Thx for the videos. Well done. Very useful. Keep going👍✔

[@realpars]

Great to hear! You are welcome :)

[@cestrc]

Best tutorial by far!

[@jabaltariq4606]

Excellent explanations

[@curiouscavin]

All information in a nutshell.Very clear video summary.Thank you

[@realpars]

You are very welcome, Kavin!

[@akahn8311]

EPIC !!! simple condensed and covered every aspect of Ethernet

[@realpars]

Great to hear! Thanks for sharing your positive feedback with us :).

[@MSK80J7]

Its crisp and clear, thank you

[@realpars]

Great to hear that! Thanks for sharing that with us.

[@mintysoda9005]

Thank you very much! It was really easier to understand!

[@realpars]

Great to hear that!

[@outsidewithquad8123]

This was amazing you made it so easy to understand for my intro to networking course!

[@realpars]

Glad you enjoyed it! Thank you for sharing and happy learning

[@tonyguillen3224]

I don't skip adds in these videos just to help this guy

[@realpars]

Thats really kind of you! Thank you!

[@sahilsagwekar]

does skipping adds cuts down on their income ??? seriously asking

[@Gamer_Tanks]

Thank you for Sharing! Finally I can explain what the ethernet is. 👍THUMBS UP👍

[@realpars]

Happy learning!

[@chasedeloach9995]

Simple and great depictions. Loved it

[@realpars]

Thank you!

[@blakely1317]

very helpful when studying in university. Huge thank you, sir

[@realpars]

Glad it was helpful! Happy learning

[@Chamin-vp8gt]

Thx for explaining! Love the video!

[@realpars]

You're very welcome!

[@piotrgaecki9056]

Outstanding quality. Thank you for sharing this amazing video.

[@realpars]

Glad you enjoyed it, Piotr! Thanks for sharing.

[@IamNerfDart]

Excuse me realpars. You are right cat5 cables are rated for 10 to 100 Mbps BUT cat5e can handle 1gigabit. But you are right about cat5/5e being susceptible to interference.

[@robertm.reedjr.5498]

ScottTheScout Also called collisions on any multiplexed cable...

[@robertm.reedjr.5498]

Called error checking and correcting.

[@Mine-rq2ho]

Nerd.

[@pic1989able]

Hello Real Pars!!.. I am very much thankful for all your videos. Kindly upload some more Industrial Communication Systems. Also PL make some videos on OPC AE and OPC DA System in details with example. Also how we can communicate external world with DCS/SCADA System. once again thanks...!!

[@realpars]

You are very welcome! Thanks a lot for the topic suggestion, I will pass this on to our creator team. Happy learning!

[@pic1989able]

thanks for acknowledging... PL make videos on these topics at earliest.

[@LXSWitermelonCatIsReal]

Dang respect for him keeping his word 😮

[@carl2143]

Thanks for the video, sir🙏 exactly what I need.

[@realpars]

You are most welcome!

[@blixzy5042]

Ty so much for the help :D

[@mickcarson8504]

Very interesting to have seen this video. It has stopped me from making connection mistakes. Thanks.

[@realpars]

Glad it was helpful, Mick! Happy learning

[@phucvu5124]

Hi, Thank you for your information. I have confusion about Profinet, EtherCAT, Sercos...Do they use Ethernet as physical layer? And only change the protocol?

[@realpars]

Hi there, thank you for your comment. EtherCAT and Profinet are both an "Ethernet Protocol" with some differences. For instance, EtherCAT uses the same "physical" and "data link" layers as Ethernet but the protocols deviate from there. The purpose of developing such protocols is the particular advantages of them in different applications. Actually, Ethernet is not a practical solution for many industrial applications as it routes frames of data to and from a "vast" number of separate addresses, individually. So in cases, where the data may be something as simple as a single register to obtain a real-time analog reading, it seems more reasonable to take advantage of other types of Ethernet protocols such as EtherCAT to reduce the data traffic, increase the speed and so on. By the way, we are going to make a video regarding "EtherCAT" in the near future. It could be a good reference for you to grasp more vivid data regarding EtherCAT and its differences from Ethernet. Thanks

[@phucvu5124]

@@realpars wow, thank you very much, hope to see Ethercat video soon

[@battlestar1788]

Thanks so help ful in my project for my current class I am taking

[@realpars]

That's amazing! You're very welcome

[@basweshwarsakhare8921]

Sharing information be like ethernet without collision 👌👌😍

[@rafaelperezbanuelos9488]

thanks for your videos, those are very useful to learn about automation

[@realpars]

You are very welcome!

[@richardtetteh4617]

Crystal clear. Thank you

[@realpars]

Great to hear that, Richard!

[@bilal17shaikh]

Simple and best way to explain everything

[@realpars]

Thank you - Bilal!

[@keithjackson2035]

This has been the best explanation ever!!

[@realpars]

Thank you, Keith!

[@AndrewDavidson_]

I've just been thinking about how the Ethernet connector resembles a phone jack. Love the video btw

[@adilformuly4568]

Thank you so much. A fantastically informative video!

[@realpars]

You're very welcome, Adil!

[@shashankthapa659]

Ethernet in a nutshell and explained perfectly.I will surely recommend my college professors to watch your videos.

[@realpars]

Great to hear that, Shashank! Thanks for sharing!

[@andrewmarthie5062]

This was very helpful, thank you so much

[@realpars]

Glad to hear that, Adit!

[@1co293]

This vid helped me learn! Love learning new things

[@realpars]

Glad it was helpful!

[@yacinetechnodz8036]

Great informative! Great animation! Great Voice thank You realpars !!!!!!!!!!

[@realpars]

Our pleasure!

[@jimbell4137]

35+ years ago, "Ethernet" ran over a thick coaxial cable that many devices could daisy-chain over. Not an 8-wire twisted pair. No longer.

[@seanbaxter44]

Nerd

[@jimbell4137]

@@seanbaxter44 And proud of it !!!

[@James_Knott]

I first came across that at work, where we had several DEC VAX 11/780 computers connected with DECNet over "Thicknet" cables. Later came 10base2, which used T connectors to add devices to the LAN. Thicknet used "vampire" taps, which actually pierced the cable. Also, the cable was usually yellow and called "yellow garden hose". ;-)

[@naza0586]

I'm from Brazil very incredible explanation, thank you so much, more one inscribe

[@realpars]

Happy to hear that, Alexsandro. Thanks for sharing!

[@tonmaynandi6464]

i am from bangladesh,

[@anonymousgerman2809]

thankyou so much it is very easily explained

[@realpars]

Glad to hear that! You're more than welcome.

[@bereketassefa9331]

this really helped me a lot

[@realpars]

Glad to hear that, Bereket!

[@bright2459]

Easy and precise information thank a lot

[@realpars]

Great to hear your positive feedback! Thanks a lot for sharing!

[@suhailkhan4596]

You gained one more subscriber today thanks for this informative video

[@realpars]

Awesome, you're very welcome!

[@chibiblitz8508]

Thx I needed to understand

[@MohanRaj-os8nj]

You're doing great job man 💪 👍👌

[@realpars]

Thank you, Mohan!

[@user-wr3qw1zu7f]

It was clear explanation on the topic. Thank you.

[@realpars]

Glad to hear that, happy learning!

[@shubhammishra6455]

Incredible teaching knowledge you have😉

[@realpars]

Thanks for your support, Shubham!

[@tigrayrimey6418]

Great video lecture! Well explanied!

[@realpars]

Glad you liked it! Thanks for sharing and happy learning!

[@rustem2930]

thank you so much, My mind is now clear about Ethernet.

[@realpars]

You are most welcome! Glad our video course was helpful!

[@prasanth_m3010]

Thank you soooo much

[@512_chvasavi4]

Hey! Real pars...I really liked ur video...ur lyk my savior...tnks for the useful info👌

[@realpars]

Thanks a ton!

[@aakavyrajeekaran9966]

This helped so much! Thanks!

[@realpars]

You're welcome!

[@WEvolveTube]

Thanks for this vid, very helpful indeed sir

[@realpars]

You're welcome!

[@theminingelit330]

Great video thanks for helping!

[@realpars]

You're very welcome!

[@AvinashKumar-C-]

Thank you so much sir

[@realpars]

Most welcome!

[@candidopereira4550]

I know this protocol. It was a so much didactic explanation with a great animation. 🇧🇷

[@realpars]

Thank you!

[@saimafarzeen1933]

Thank u so much for this now i can truly understand what Ethernet actually is! No more confusions

[@realpars]

We're very happy to hear that! Happy learning

[@ihebeddine6613]

thank you so much ❤️

[@realpars]

You're very welcome!

[@ganeshgohan1219]

realpars really useful keep it we waiting for lot learning from your chsnnel👏

[@realpars]

Great!

[@indian_naruto3449]

Ty for this video I needed this 😂!

[@realpars]

You're very welcome! Happy learning

[@blattclan3029]

Thx man your the best your the person to watch

[@realpars]

Thanks for your support! We appreciate you sharing that.

[@blattclan3029]

RealPars no problem

[@user-jc4lt1vk2g]

You know, computer scientists are used to handle the magical "Ether", the 5th element, as a physical substance through which electromagnetic energy must travel. The Ethernet, Ethereum, etc. It allows us to connect to a network.

[@bhatusonawane7054]

Is you a Chinese or Japanese ?

[@hiimafrogimafrog1280]

He is a Korean,

[@suyograut468]

@@bhatusonawane7054 he korean