Absolutely stellar video. I very rarely see such clear and concise tutorial videos for networking features. And the fact that it used a PLC and an HMI, as opposed to just a router and a PC like most videos on this make it excellent.
10 years later and this helped me with my cyber security course I am currently taking for a certification! Never heard of a hub before and didn't even realize this feature of switches I've been using forever! I've always viewed switches the way I now know hubs work, thank you sir!
The only reason for the delay when switching the PLC to a new port is the fact that it almost never transmits on its own (possibly once every 5 minutes). If it was reconfigured to transmit a frame every few seconds, this wouldn't be an issue. (For example, if you had two full-fledged computers connected to the switch, those networking stacks are going to talk so frequently that there would be almost no delay when changing ports under pretty much any circumstances)
Bravo! I was asked this exact question last week by my boss at work and I didn't know. Funny how it's little understandings like this that stump even the best of us.
Ethernet originated as a "bus" architecture, multiple nodes on a single shared cable. Over time it evolved to use hubs, repeaters, and bridges to expand and extend the maximum distances between nodes. It later became more of a star configuration, as we have today, where you almost invariably have an active network device interconnecting things, acting as a sort of traffic cop for the data packets. I worked with Ethernet back in the early days, even fixed a major throughput problem by understanding the difference between Ethernet 2.0 and IEEE 802.3 standards ("heartbeat" vs. SQE). We've come a long way, but understanding how things work at the lower levels, as this video shows, can really help when fighting problems or preventing them in the first place.
My first Ethernet experience was in the mid 80s, with DECnet over 10base5 Thicknet. In 1989, I hand wired a couple of Ethernet controllers on prototyping boards for Data General Eclipse computers. I also had some experience along the way with 10base2 Thinnet. In spring 1997, I was working on a job to convert some Ontario government offices from 10base2 to 10baseT, so they could move to switches. These days, my home LAN is 1 Gb and with my Internet connection around 920 Mb down, it may soon be time to upgrade my network.
Wow. nicely explained. This little piece of info will serve me well ;-) I just watched a video by Eli the Computer Guy, where he mentioned a bad point about a Buffalo Switch's loop detection. When the loop detection is switched on it had to be power cycled before the feature worked. He didn't mention why that would be the case. After watching this video I'm guessing it has something to do with what you just explained...detection of specific MAC address to specific port...nice
Wonderful Explanation! I figure that unless a *Ethernet* *Switch* is way faster than a *Ethernet* *Hub,* I'll go with a Hub. A Hub definetly sounds like it's a _"set & forget it"_ situation.
Can you even buy a hub these days? Most hubs were 10 Mb, though there were some at 100 Mb. Switches are often 1 Gb or more these days. You're also likely slowing down your Internet connection, unless you have a really slow one. I have 1 Gb switches here and I get 920 Mb down on my Internet connection.
BTCInstrumentation Your video was succinct, clear and very helpful to a person who likes to tinker with literally, a room full of acquired stuff. I happened to see your thumbnail while actually looking for something else. This is now one of my bookmarks/favorites. Thank you much.
Okay, this be an old schooling video from 2013 but exactly this is all correct! Thanks for make it. Anno 2016 no one use more an extra hub now, only for diagnostic service we like. This "calling in the room" of a hub is it what we service technicans love to use. But many modern managed switches do you can use as hub for the ports how you likes.
***** No. the hub will actually cause you to get IP conflicts on your network. The hub will work fine as long as only one device on it is operating at a time. But because it does not assign IP addresses to each device with DHCP, if you turn on two devices connected to a hub at the same time, they will start trying to use the same IP address and you will get IP conflict error messages. Go ahead, use a switch. They're cheap and you'll never even know it's there. Everything will just work.
+Steve Warren That's completely wrong. A hub (or switch) has NOTHING to do with assigning IP addresses - if you get you get duplicate IP addresses, there's something else wrong in you network.
+Steve Warren Hubs are more common then you think, alot of what is marketed as a switch today are really just hubs. a hub operates on layer 1, a switch operates on layer 2 of the OSI model. a hub passes date to every port attached, a real switch only sends the packet to the port that is leads to the destination of said packet.
Nice job on this video. I'm using it for our tech support people so they can get the impact of the data switch's behavior on troubleshooting matters. Really glad I found this one.
Wait, so for the switch, what if you want to plug in multiple devices? I am plugging in my wifi router and my ps4, and it is only recognizing which ever one I plug in first. The other port is blinking, but there is no actual connection being made.
The way you just explained this, made sooo much better sense. i currently own a hub off of a router. i was looking for a reason to get a switch. thanks for the tutorial.
Just love the so called experts (X being an unknown quantity and spert being a drip under pressure ) who just want to can this excellent demonstration on the differences between a switch and a hub. Ipreams is a good example of a know it all.
It would have helped to show that a hub "talks" to all ports, and the switch doesn't bother other active hosts. There were no other active hosts to make that comparison. This vid makes it seem that a hub is a much better choice on a small network. I would like to know when the hubs' blind broadcasts becomes a detriment, and the switch becomes beneficial. Thanks for the vid.
Always, hubs cannot run in full duplex. Even for just 2 computers, a regular patch cable is better; they can handle full duplex. The only time you want a hub is for Wiresharking traffic from two computers in 1992, and even then there are better options.
Thank you very much for the clear explanation.i am wondering if I can use two Ethernet switches at the same time. I have one switch plugged into the router directly upstairs and run a 100 feet Ethernet cable from that switch to a desktop computer in the basement. Can I split this cable by plug the end (in the basement) into the 2ND Ethernet switch and hook up 2 computers into that switch? will it work?
Interesting video! I never saw a switch taking 5 minutes to update it's mac table. Is this a cheap netgear issue? Usually when a switch inidicates a port up, it refreshes the mac table.
Hi, I have a question. I have a Netgear gs108 Ethernet Switch (8-port) on my existing home network with a Comcast/ Xfinity cable modem. There are 2 Netgear Power XE104 line devices connected separately from the modem by ethernet cable through the circuit breaker to an outlet by the other Netgear Powerline XE104 device in the kitchen. It has no ethernet switches in the area. Only a 300 Amped Wireless Router on the kitchen table as a repeater. I need to replace it with a different model of the repeater. It only supports 2.4ghz. I need a dual-band repeater for the kitchen. One connection for the 50 inch Samsung tv, one connection for the Netgear Powerline Connection and one connection for my gaming systems. I need a larger amount of ethernet switch ports then what I have. Plus what is the best wireless/ethernet cable router currently available? I'm a gamer.
There should be dead-timers within the switch CAM table to flush old MAC Address entries. But you'll have to wait. Otherwise, you can always power cycle switch to clear CAM table. Nice video.
Correct me if I'm wrong but when you moved the PLC blue cable from port 3 to port 4 and it don't communicate is because the switch will look at the source MAC address on it's MAC address table for that known source MAC address. If that source MAC address is on the switch MAC address table but was on port 3, the switch needs to wait 300 seconds (5 minutes) for the switch MAC address table to expire before it can log that same source MAC address to port 4.
This is a great video. I was having trouble with a LAN party playing the game Halo on the Xbox 360. This video provided a good explanation on why some of my problems occurred.
Thanks. but now that you explained the difference. it made a world of a difference. because I could NOT figure out why my brand new Linksys 8 port switch was all of a sudden slower than my older switch. as they in New England. "if you don't like the weather. wait 5 min " thanks
Switch. Hubs are obsolete. They will force your devices into half duplex, so they can only transmit or receive at a time, but switches can do both. Also, most hubs were only 10 Mb but, these days, switches are often 1 Gb or faster.
Soo i have a computer and xbox that id like to run my gig speed internet into. Which would be the one to use in my case? I just have one ethernet cable coming from my modem, and would like to get both my devices hardwired.
Hi just a question. I have two pc that needs to communicate internally and If I use a hub will it bypass my router modem configuration?(firewall etc) Right now my router is managed by my isp and I cant configure the ports to allow that my two pcs needs example port 5353. Im thinking if i use a hub it will by bypass my router config but atill be able to connecto to internet and also internally(without firewall blocking)
Is the resetting of the ports when the slave is changed dependent on the switch model with regards to the timeout? ie. 5 minutes for this particular Netgear. Can this timeout be adjusted in the switch settings?
great video thank you so much for clearing up my question. i had a question i have a cable modem with 4 outlets one for the cable and 3 for your use. now i have 5 computers all wired not wifi. i also have vonage internet phone that needs connected too. i have have twc fastest internet connection they offer for the home. it is 50 Mbps down and 10 Mbps up. so i could get a gigabit switch plug everything into it then one cable from the switch to the cable modem, correct? right now i have 2 computers and phone wired and 3 computers on wifi but i want all wired. so will the switch help me with connection and speed over using just the modem only? the switch i am looking at is TRENDnet TEGS16DG Gigabit GREENnet Switch. is this a good switch to buy? or what do you suggest? again thanks for your help.
3:54 Can this be cleared via unplugging and plugging or cycling the switch? (edit: 30 seconds later my question answers itself in the video, great coverage!) This makes sense though, does this also happen with household routers? I've often pondered this notion when changing slots while troubleshooting. Or even USB ports would this happen? I ask about USB ports because sometimes when troubleshooting a plug and play (pray) solution the drivers won't load and I have to reboot to see the "cannot find drivers online" message a second time because it will only alert once. Thanks.
Thank you this is a wonderful video. HUB\SWITCH I'll be damned! I was about to loose my S*%$ so bad until I found this video. I just wanted to try a SRX200 HUB and made it more complicated by bridging two Ethernet cards.
Hi i have a netgear n600 modem/router dual band, there are two ethernet ports in the back. All of a sudden one of the ports stopped working after 2 months One is to my home security system and the other to my home security cameras. Instead of buying a new modem/router combo, do you suggest i buy a switch to connect to the port that is working or buy a whole new unit? thank you
I did not know the difference before now. So now I ask, I plan on purchasing either a 16 port or 24 port Switch or hub. I plan to hook up 4 PS3's, 3 lap tops, 3 streaming boxes, my home DirecTV internet modem, and a couple of Smart TV's. I have spectrum internet. The 60 variety. Will my system crash if I use them all at once?
If you use a gigabit switch, and have a fast enough ISP connection, you shouldn't have a problem. Forget using a hub. Period. Video didn't really adequately explain the major flaw of a hub, which is data collision. In video, he said that his HMI is broadcasting to all other ports, which is true. What he failed to mention is that in a hub, ALL connected devices broadcast to all ports. So, rather than one person in a room talking and everyone else being able to hear it, it's more like a bunch of people in a room all yelling at each other so loudly and so often that most people can't hear much of what any other person is saying. The more devices trying to use the same 'wire' to send signals at the same time, the greater the chances of data collisions, and the greater chance networking becomes all but impossible.
Hubs are generally not used anymore because they tend to replicate packets. That replication of packets can use up the bandwith on your ethernet and cause broadcast storms. Switches solve this problem by only sending packets to specific ports (instead of broadcasting packets). But that feature that they replicate packets can be used in order to "listen" to an ethernet conversation with say a laptop running a protocol analyzer such as WireShark. I keep a small hub in my toolbox for this purpose.
in a managed switch, like TL-SG3424, you can "simulate" a hub by transferring all data processed by the switch to one distinguished port. So you can debug your network AND be happy to have no collision domain :)
By definition broadcast storm is when node send/broadcast data over a network link, and the other side of link rebroadcasting same data back to it in response so it have not much to do what you use switch or hub. You can have broadcast storm on switch to, connect 2 switches with 2 cables together and you have it instantly (without link aggregation on ports), of course no one will do that, but it can happen if you have lot of switches on different locations and not good documentation for network. Most modern switches some kind broadcast storm control so it will prevent it from doing network meltdown.
@@christiansonnenberg6306 You're referring to what's often called "port mirroring". I have done that with a 5 port switch, which I carry in my computer bag.
@@James_Knott Thx for clarification and the blast from the past! Since that post I've gotten a little bit of an education in networking and think I'd articulate myself a little bit better than nine years ago. Nevertheless, how did you end up on a video with a topic so much out of date? :)
Unfortunately this does not work. If you move the master (HMI) cable to another port, the problem remains. Ethernet frames sent to the PLC still get sent to the old PLC port, until the timer times out or the switch is reset.
The switch probably doesn’t see the PLC on the other port right away, because the PLC doesn’t transmit anything until it gets a request to do so. If you got a network device that’s a bit more talky, like a PC or laptop, it should start working again within seconds.
You typically didn't need a crossover between a router and a switch or hub. However, with Gb and some 100 Mb switches, autonegotiation also does crossover, so no need for crossover cables with them.
If I connect to this desktop switch from my broadband connection and use router and other things from this switch, but will it be the internet connection to the router?
Informative... Curious about this before but never enough to follow up and get informed. came across your vid so watched it. Thank you! and btw... I duno who you sound like, and this prob makes me sound weird, but you have a very pleasant speaking (or at least teaching) voice! So Good Job on that as well! lol
Thank you for your video. Question. Can I connect a switch in the place of a Router? I don't want to use wireless. I know I can shut off the wireless on the router but why get a route if you don't need it?
In most cases you cannot. The router isolates your ISP's network from your own network and routes packets between them in a specific way, usually with network address translation. This enables you to connnect any number of computers on your side of the router. They will also have a degree of protection, unlike in the video where both devices soon discovered each other on the same network segment. You may use a switch if you can get an IP address from the ISP for every computer (usually limited to 1 or 2), or if you already have a router provided by the ISP's CPE ('modem'). You may need to access the CPE to enable the routing function. The modem's built in router may not be as capable or you might not have full access to it. The wireless radio is like another port to the device, on the LAN side. If you still have two or three wired devices, and but none of them are wireless, the router still has a job to do.
No. The router this days have some components inside e.g. the modem to connect the WAN of your local provider, a switch, a WiFi box, DHCP and so on. So in the most configurations your network not works more till a killing switch if you put your analog line cable inside.
Lastly. I want to add a projector to my living room. I have an existing Ethernet going to my Roku device, all the way from my router in another room. I want to plug the existing that existing Ethernet cable to a switch or hub, thus removing the Roku as the one and only terminating route, and then plug my Roku and projector into that switch or hub in the living room. For something so mundane, would you recommend a hub or switch for this network solution? And why? Thanks!
A switch can pick up is new connection (almost) as fast as a hub. It all depends of device configuration The only real difference between a hub and a (unmanaged) switch is collision avoidance.
Another major difference between a Hub and a Switch is that a Hub is a layer 1 device which makes it as intelligent as an ethernet cable and a Switch is already on layer 2.
Sorry so it is wrong. Hub be technically parts of OSI 2, switch parts of OSI 2 or/and OSI 3. OSI Layer 1 be the physically cable self! A OSI Layer not mean the device must use all of them, it is only a theory plan, not more!
TrottingFox Yes, that is precisely what a switch/hub would do. Like using a single LAN cable to connect internet to your PC, XBox and PS or other PC's. In addition, your PC and XBox/PS/other PC's would be able to communicate via switch/hub in case you want to transfer files for example. Switch would be faster than a hub, especially if you have high volume of traffic. Switches are a newer solution, hubs are becoming obsolete; you'd only want a hub in special cases like network diagnostics.
Alright the switch behavior is interesting since none of my switches have that "deaf port" issue demonstrated in the video. I'm honestly thinking it's a problem with the specific switch itself. I would love to see a follow-up video of this done with a different brand switch such as Linksys.
The deaf port issue only happens if you try to switch the ports while the switch is turned on. In the real world people set up their switch to serve all the computers in their home or office, and then they don't have to mess with the switch anymore. It's beyond me why anyone would want to switch a cable to a different port on a regular basis. And if you really wanted to do this, just unplug the switch while doing it, then plug it back in and the switch will reset itself right away. I think the man in the video was just showing this deaf port problem to prove how switches and hubs differ, in that a switch has independent ports that talk to the source, whereas the ports of a hub are all "glued" together and share the same information from the source.
+David Senos that only applies on home owner grade switches, commerical switches can be 'mac-locked' to wear only a specific mac address will work in a specific port. (this has to do with physical security)
3:28 It seems that the way it's explained, the hub and switch are doing the same thing. He explains the Switch is sending messages to a specific MAC? It's unclear. I'm only beginning to research switches and hubs though my understanding of CS is far wider than my specific understanding of networking. So, is this Rather Desktop Unmanaged vs Desktop Web Managed? I'm asking, not stating, because I really don't know. Thanks.
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Absolutely stellar video. I very rarely see such clear and concise tutorial videos for networking features. And the fact that it used a PLC and an HMI, as opposed to just a router and a PC like most videos on this make it excellent.
thank you. this is the clearest explanation of the differences between a switch and a hub that I have ever seen.
yup .. fantastic clear and crisp explanation
You made a better video than what 99.99% of the other people have made! Thank you!
10 years later and this helped me with my cyber security course I am currently taking for a certification! Never heard of a hub before and didn't even realize this feature of switches I've been using forever! I've always viewed switches the way I now know hubs work, thank you sir!
Excellent!. "Show and Tell" proves its worth once again. How or why did we ever get away from it in teaching?. Thanks!
Thank you! You are an amazing teacher. That was so clear, it was a pleasure to watch!
The only reason for the delay when switching the PLC to a new port is the fact that it almost never transmits on its own (possibly once every 5 minutes). If it was reconfigured to transmit a frame every few seconds, this wouldn't be an issue. (For example, if you had two full-fledged computers connected to the switch, those networking stacks are going to talk so frequently that there would be almost no delay when changing ports under pretty much any circumstances)
+lpreams
I was thinking this as well.
that power cycle tip when moving a port is gold!!! as always a brilliant explanation /lesson,thanks for recording uploading.
I hope this guys a teacher. Natural delivery.
Bravo! I was asked this exact question last week by my boss at work and I didn't know.
Funny how it's little understandings like this that stump even the best of us.
If you aren't a teacher/professor, you would be great. You made this so clear and easy to understand. Thank you so much.
At last someone who has made a straight forwards video and explained in simple terms ... I THANK YOU
I didn't know any of this. This is very helpful information. Thank You
Excellent video and explanation. Your explanation, along with the physical demonstration, was extremely helpful. Thanks!
Studied information science and had to stumble upon this to finally get enlightened! Thanks!!!
Ethernet originated as a "bus" architecture, multiple nodes on a single shared cable. Over time it evolved to use hubs, repeaters, and bridges to expand and extend the maximum distances between nodes. It later became more of a star configuration, as we have today, where you almost invariably have an active network device interconnecting things, acting as a sort of traffic cop for the data packets.
I worked with Ethernet back in the early days, even fixed a major throughput problem by understanding the difference between Ethernet 2.0 and IEEE 802.3 standards ("heartbeat" vs. SQE). We've come a long way, but understanding how things work at the lower levels, as this video shows, can really help when fighting problems or preventing them in the first place.
My first Ethernet experience was in the mid 80s, with DECnet over 10base5 Thicknet. In 1989, I hand wired a couple of Ethernet controllers on prototyping boards for Data General Eclipse computers. I also had some experience along the way with 10base2 Thinnet. In spring 1997, I was working on a job to convert some Ontario government offices from 10base2 to 10baseT, so they could move to switches.
These days, my home LAN is 1 Gb and with my Internet connection around 920 Mb down, it may soon be time to upgrade my network.
Wow. nicely explained. This little piece of info will serve me well ;-)
I just watched a video by Eli the Computer Guy, where he mentioned a bad point about a Buffalo Switch's loop detection. When the loop detection is switched on it had to be power cycled before the feature worked. He didn't mention why that would be the case. After watching this video I'm guessing it has something to do with what you just explained...detection of specific MAC address to specific port...nice
MJ D Exactly. Here many so-called "Computer Experts" at RUclips, and over thousend use the comment section of RUclips too!
Wonderful Explanation! I figure that unless a *Ethernet* *Switch* is way faster than a *Ethernet* *Hub,* I'll go with a Hub. A Hub definetly sounds like it's a _"set & forget it"_ situation.
Can you even buy a hub these days? Most hubs were 10 Mb, though there were some at 100 Mb. Switches are often 1 Gb or more these days. You're also likely slowing down your Internet connection, unless you have a really slow one. I have 1 Gb switches here and I get 920 Mb down on my Internet connection.
BTCInstrumentation Your video was succinct, clear and very helpful to a person who likes to tinker with literally, a room full of acquired stuff. I happened to see your thumbnail while actually looking for something else. This is now one of my bookmarks/favorites. Thank you much.
What a clear and well explained video. I learn't switch behaviours I didn't know, thank you
Okay, this be an old schooling video from 2013 but exactly this is all correct! Thanks for make it. Anno 2016 no one use more an extra hub now, only for diagnostic service we like. This "calling in the room" of a hub is it what we service technicans love to use. But many modern managed switches do you can use as hub for the ports how you likes.
Hubs are pretty rare. Rule of thumb, if you find one, disconnect it and throw it away.
Steve Warren I got a laugh out of that.
Steve Warren I dont know what i laugh so hard to that lol... good one !
***** No. the hub will actually cause you to get IP conflicts on your network. The hub will work fine as long as only one device on it is operating at a time. But because it does not assign IP addresses to each device with DHCP, if you turn on two devices connected to a hub at the same time, they will start trying to use the same IP address and you will get IP conflict error messages. Go ahead, use a switch. They're cheap and you'll never even know it's there. Everything will just work.
+Steve Warren That's completely wrong. A hub (or switch) has NOTHING to do with assigning IP addresses - if you get you get duplicate IP addresses, there's something else wrong in you network.
+Steve Warren Hubs are more common then you think, alot of what is marketed as a switch today are really just hubs. a hub operates on layer 1, a switch operates on layer 2 of the OSI model. a hub passes date to every port attached, a real switch only sends the packet to the port that is leads to the destination of said packet.
Great explanation and demonstration of the benefits and disadvantages, thanks!
Explained very well. you should be an instructor....I always wondered what the difference was ..
This has to be the clearest explanation of hubs/switches on the net :)
Thank you :D
Thank you, really well explained. I'm getting ready for final, and learning this really helps. I prefer visual over textbook. thank you again.
Gosh this is so enlightening! I've had this explained to me many times, but now I understand! Thank you!
Best explanation 100% in a practical situation ! 161 dislike at the time of this comment i guess they do not understand English.
Nice job on this video. I'm using it for our tech support people so they can get the impact of the data switch's behavior on troubleshooting matters. Really glad I found this one.
I appreciate the “plain English” explanation!
Wait, so for the switch, what if you want to plug in multiple devices? I am plugging in my wifi router and my ps4, and it is only recognizing which ever one I plug in first. The other port is blinking, but there is no actual connection being made.
The way you just explained this, made sooo much better sense. i currently own a hub off of a router. i was looking for a reason to get a switch. thanks for the tutorial.
Just love the so called experts (X being an unknown quantity and spert being a drip under pressure ) who just want to can this excellent demonstration on the differences between a switch and a hub. Ipreams is a good example of a know it all.
Very good and didatic explanation. Now I know the difference between HUB and SWITCH. Thanks for sharing!
best video i've ever seen about the differences , thank you
Very cool video, I always wondered what were the differences between the two!
It would have helped to show that a hub "talks" to all ports, and the switch doesn't bother other active hosts. There were no other active hosts to make that comparison. This vid makes it seem that a hub is a much better choice on a small network. I would like to know when the hubs' blind broadcasts becomes a detriment, and the switch becomes beneficial. Thanks for the vid.
Always, hubs cannot run in full duplex. Even for just 2 computers, a regular patch cable is better; they can handle full duplex. The only time you want a hub is for Wiresharking traffic from two computers in 1992, and even then there are better options.
wow, thanks for the vid, i wasn't sure what the difference was but have always used switches anyway. Well explained :)
And now this is one hell of a good explanation. Thanks
Thank you very much for the clear explanation.i am wondering if I can use two Ethernet switches at the same time. I have one switch plugged into the router directly upstairs and run a 100 feet Ethernet cable from that switch to a desktop computer in the basement. Can I split this cable by plug the end (in the basement) into the 2ND Ethernet switch and hook up 2 computers into that switch? will it work?
Interesting video! I never saw a switch taking 5 minutes to update it's mac table. Is this a cheap netgear issue? Usually when a switch inidicates a port up, it refreshes the mac table.
Hi, I have a question. I have a Netgear gs108 Ethernet Switch (8-port) on my existing home network with a Comcast/ Xfinity cable modem. There are 2 Netgear Power XE104 line devices connected separately from the modem by ethernet cable through the circuit breaker to an outlet by the other Netgear Powerline XE104 device in the kitchen. It has no ethernet switches in the area. Only a 300 Amped Wireless Router on the kitchen table as a repeater. I need to replace it with a different model of the repeater. It only supports 2.4ghz. I need a dual-band repeater for the kitchen. One connection for the 50 inch Samsung tv, one connection for the Netgear Powerline Connection and one connection for my gaming systems. I need a larger amount of ethernet switch ports then what I have. Plus what is the best wireless/ethernet cable router currently available? I'm a gamer.
There should be dead-timers within the switch CAM table to flush old MAC Address entries. But you'll have to wait. Otherwise, you can always power cycle switch to clear CAM table. Nice video.
Correct me if I'm wrong but when you moved the PLC blue cable from port 3 to port 4 and it don't communicate is because the switch will look at the source MAC address on it's MAC address table for that known source MAC address. If that source MAC address is on the switch MAC address table but was on port 3, the switch needs to wait 300 seconds (5 minutes) for the switch MAC address table to expire before it can log that same source MAC address to port 4.
Awesome demonstration and explanation
very clear but what is the point of all of this hub and switches and all of the ports???
Thank you for the thorough and clear explanation!
Wow! Great explanation and demo...I never knew we had to reboot the switch! Thanks so much!
Great video. Thank you! Explained exactly what I was wanting to know!
The best video I've ever seen. Well explained.
That was an incredibly good explanation. Thanks!
Do you know where I could buy an actual HUB and not a switch nowadays?
This is a great video. I was having trouble with a LAN party playing the game Halo on the Xbox 360. This video provided a good explanation on why some of my problems occurred.
This problem is switch firmware related on your NIC firmware as this is not how it should behave. Are you using a connectionless protocol like UDP?
amazing! finally I understood the diference! very thanks man!
Thanks. but now that you explained the difference. it made a world of a difference. because I could NOT figure out why my brand new Linksys 8 port switch was all of a sudden slower than my older switch.
as they in New England. "if you don't like the weather. wait 5 min " thanks
hi. I have 6 ethernet devices. I want them to reach full speed, what should I choose?switch or hub.thanks
Switch. Hubs are obsolete. They will force your devices into half duplex, so they can only transmit or receive at a time, but switches can do both. Also, most hubs were only 10 Mb but, these days, switches are often 1 Gb or faster.
excellent, I've learned something today. Always a good thing.
Most simple explanation !! Thank you
Soo i have a computer and xbox that id like to run my gig speed internet into. Which would be the one to use in my case? I just have one ethernet cable coming from my modem, and would like to get both my devices hardwired.
Hi just a question. I have two pc that needs to communicate internally and If I use a hub will it bypass my router modem configuration?(firewall etc) Right now my router is managed by my isp and I cant configure the ports to allow that my two pcs needs example port 5353. Im thinking if i use a hub it will by bypass my router config but atill be able to connecto to internet and also internally(without firewall blocking)
I wish I had you as a teacher in school. All your videos have very clear and thorough explanations.
Thank you. I couldnt figure out why my new switch wouldn't work. all I had to do was reset it.
Thanks man for making this video. I learned a great deal by seen this.
Is the resetting of the ports when the slave is changed dependent on the switch model with regards to the timeout? ie. 5 minutes for this particular Netgear. Can this timeout be adjusted in the switch settings?
Good Demonstration I learn something something today
great video thank you so much for clearing up my question. i had a question i have a cable modem with 4 outlets one for the cable and 3 for your use. now i have 5 computers all wired not wifi. i also have vonage internet phone that needs connected too. i have have twc fastest internet connection they offer for the home. it is 50 Mbps down and 10 Mbps up. so i could get a gigabit switch plug everything into it then one cable from the switch to the cable modem, correct? right now i have 2 computers and phone wired and 3 computers on wifi but i want all wired. so will the switch help me with connection and speed over using just the modem only? the switch i am looking at is TRENDnet TEGS16DG Gigabit GREENnet Switch. is this a good switch to buy? or what do you suggest? again thanks for your help.
3:54 Can this be cleared via unplugging and plugging or cycling the switch? (edit: 30 seconds later my question answers itself in the video, great coverage!) This makes sense though, does this also happen with household routers? I've often pondered this notion when changing slots while troubleshooting. Or even USB ports would this happen? I ask about USB ports because sometimes when troubleshooting a plug and play (pray) solution the drivers won't load and I have to reboot to see the "cannot find drivers online" message a second time because it will only alert once. Thanks.
Thank you this is a wonderful video. HUB\SWITCH I'll be damned! I was about to loose my S*%$ so bad until I found this video. I just wanted to try a SRX200 HUB and made it more complicated by bridging two Ethernet cards.
Hi
i have a netgear n600 modem/router dual band, there are two ethernet ports in the back. All of a sudden one of the ports stopped working after 2 months One is to my home security system and the other to my home security cameras. Instead of buying a new modem/router combo, do you suggest i buy a switch to connect to the port that is working or buy a whole new unit? thank you
Balada NYC Buy a 1 Gbit/s unmagement switch, connect one port to the router, one to your cam, and one to your security system.
I'm trying to connect my gaming pc and my steam link that I use to stream the pc to my router which would be best switch or hub?
+RedArmyNova get a switch
Hi, I will like to know whats the voltage capacity per PoE Port in a netgear GS308p? Thanks for the info help. Im trying to connect Unifi Aps (24 V.)
Moving the master also does a reset and is probably a better reset than recycling the power.
I did not know the difference before now. So now I ask, I plan on purchasing either a 16 port or 24 port Switch or hub. I plan to hook up 4 PS3's, 3 lap tops, 3 streaming boxes, my home DirecTV internet modem, and a couple of Smart TV's. I have spectrum internet. The 60 variety. Will my system crash if I use them all at once?
If you use a gigabit switch, and have a fast enough ISP connection, you shouldn't have a problem.
Forget using a hub. Period. Video didn't really adequately explain the major flaw of a hub, which is data collision.
In video, he said that his HMI is broadcasting to all other ports, which is true. What he failed to mention is that in a hub, ALL connected devices broadcast to all ports. So, rather than one person in a room talking and everyone else being able to hear it, it's more like a bunch of people in a room all yelling at each other so loudly and so often that most people can't hear much of what any other person is saying.
The more devices trying to use the same 'wire' to send signals at the same time, the greater the chances of data collisions, and the greater chance networking becomes all but impossible.
Hubs are generally not used anymore because they tend to replicate packets. That replication of packets can use up the bandwith on your ethernet and cause broadcast storms. Switches solve this problem by only sending packets to specific ports (instead of broadcasting packets).
But that feature that they replicate packets can be used in order to "listen" to an ethernet conversation with say a laptop running a protocol analyzer such as WireShark. I keep a small hub in my toolbox for this purpose.
in a managed switch, like TL-SG3424, you can "simulate" a hub by transferring all data processed by the switch to one distinguished port.
So you can debug your network AND be happy to have no collision domain :)
By definition broadcast storm is when node send/broadcast data over a network link, and the other side of link rebroadcasting same data back to it in response so it have not much to do what you use switch or hub.
You can have broadcast storm on switch to, connect 2 switches with 2 cables together and you have it instantly (without link aggregation on ports), of course no one will do that, but it can happen if you have lot of switches on different locations and not good documentation for network. Most modern switches some kind broadcast storm control so it will prevent it from doing network meltdown.
Switches will broadcast to all ports, until they learn where the destination MAC is.
@@christiansonnenberg6306 You're referring to what's often called "port mirroring". I have done that with a 5 port switch, which I carry in my computer bag.
@@James_Knott Thx for clarification and the blast from the past!
Since that post I've gotten a little bit of an education in networking and think I'd articulate myself a little bit better than nine years ago.
Nevertheless, how did you end up on a video with a topic so much out of date? :)
Unfortunately this does not work. If you move the master (HMI) cable to another port, the problem remains. Ethernet frames sent to the PLC still get sent to the old PLC port, until the timer times out or the switch is reset.
The switch probably doesn’t see the PLC on the other port right away, because the PLC doesn’t transmit anything until it gets a request to do so. If you got a network device that’s a bit more talky, like a PC or laptop, it should start working again within seconds.
Do you need a cross over cable to go from switch to your router? does your router cable need to be in port one?
You typically didn't need a crossover between a router and a switch or hub. However, with Gb and some 100 Mb switches, autonegotiation also does crossover, so no need for crossover cables with them.
If I connect to this desktop switch from my broadband connection and use router and other things from this switch, but will it be the internet connection to the router?
Informative... Curious about this before but never enough to follow up and get informed. came across your vid so watched it. Thank you! and btw... I duno who you sound like, and this prob makes me sound weird, but you have a very pleasant speaking (or at least teaching) voice! So Good Job on that as well! lol
Thank you for your video. Question. Can I connect a switch in the place of a Router? I don't want to use wireless. I know I can shut off the wireless on the router but why get a route if you don't need it?
In most cases you cannot. The router isolates your ISP's network from your own network and routes packets between them in a specific way, usually with network address translation. This enables you to connnect any number of computers on your side of the router. They will also have a degree of protection, unlike in the video where both devices soon discovered each other on the same network segment.
You may use a switch if you can get an IP address from the ISP for every computer (usually limited to 1 or 2), or if you already have a router provided by the ISP's CPE ('modem'). You may need to access the CPE to enable the routing function. The modem's built in router may not be as capable or you might not have full access to it.
The wireless radio is like another port to the device, on the LAN side. If you still have two or three wired devices, and but none of them are wireless, the router still has a job to do.
No. The router this days have some components inside e.g. the modem to connect the WAN of your local provider, a switch, a WiFi box, DHCP and so on. So in the most configurations your network not works more till a killing switch if you put your analog line cable inside.
great explanation....it helps to explain in pratice
So i can use a switch to send internet to a pc and a router for wifi at the same time right?
Great, simple explanation, thank you very much!
ok i just bought a 24 port switch. Does it matter which port i use to plug the main feed
into from my home modem ?
Excellent video! Thanks for sharing.
Switch optimizes privacy Hub optimizes sharing, any questions?
Very well explained in simple terms
Lastly. I want to add a projector to my living room. I have an existing Ethernet going to my Roku device, all the way from my router in another room. I want to plug the existing that existing Ethernet cable to a switch or hub, thus removing the Roku as the one and only terminating route, and then plug my Roku and projector into that switch or hub in the living room. For something so mundane, would you recommend a hub or switch for this network solution? And why? Thanks!
switch
In my network of computers even when i move any plug the switch work right away for some reason
A switch can pick up is new connection (almost) as fast as a hub. It all depends of device configuration
The only real difference between a hub and a (unmanaged) switch is collision avoidance.
Another major difference between a Hub and a Switch is that a Hub is a layer 1 device which makes it as intelligent as an ethernet cable and a Switch is already on layer 2.
Sorry so it is wrong. Hub be technically parts of OSI 2, switch parts of OSI 2 or/and OSI 3. OSI Layer 1 be the physically cable self! A OSI Layer not mean the device must use all of them, it is only a theory plan, not more!
I actually learned something. thank you a lot!
So, if i plug 1 Ethernet cable from a router to a switch will it bring Ethernet signal to all of the things plugged into the switch right?
TrottingFox Yes, that is precisely what a switch/hub would do. Like using a single LAN cable to connect internet to your PC, XBox and PS or other PC's. In addition, your PC and XBox/PS/other PC's would be able to communicate via switch/hub in case you want to transfer files for example. Switch would be faster than a hub, especially if you have high volume of traffic. Switches are a newer solution, hubs are becoming obsolete; you'd only want a hub in special cases like network diagnostics.
thanks. didint' realize this was a problem. have had it to me before in my small office
Alright the switch behavior is interesting since none of my switches have that "deaf port" issue demonstrated in the video. I'm honestly thinking it's a problem with the specific switch itself. I would love to see a follow-up video of this done with a different brand switch such as Linksys.
The deaf port issue only happens if you try to switch the ports while the switch is turned on. In the real world people set up their switch to serve all the computers in their home or office, and then they don't have to mess with the switch anymore. It's beyond me why anyone would want to switch a cable to a different port on a regular basis. And if you really wanted to do this, just unplug the switch while doing it, then plug it back in and the switch will reset itself right away. I think the man in the video was just showing this deaf port problem to prove how switches and hubs differ, in that a switch has independent ports that talk to the source, whereas the ports of a hub are all "glued" together and share the same information from the source.
+David Senos that only applies on home owner grade switches, commerical switches can be 'mac-locked' to wear only a specific mac address will work in a specific port. (this has to do with physical security)
great explanation and easy to understand
3:28 It seems that the way it's explained, the hub and switch are doing the same thing. He explains the Switch is sending messages to a specific MAC? It's unclear. I'm only beginning to research switches and hubs though my understanding of CS is far wider than my specific understanding of networking. So, is this Rather Desktop Unmanaged vs Desktop Web Managed? I'm asking, not stating, because I really don't know. Thanks.
Very well explained and illustrated - thanks!
One reason I use managed switches. I can tag ports or create VLANS...