🥳Some Updates 🥳 • I've added some more languages as audio tracks by popular demand: French, Ukrainian, Turkish, and Polish • I've also improved the subtitles script so that should smooth out the dubbed speaking speed, so there should be fewer speed-ups and slow-downs in speaking, let me know what you think.
I am more than surprised hearing my native language in your video. I personally choose to listen to original audio but want to say thank you so much for making your videos more and more accessible.
You added my language, so I can finally see how this works. It's pretty good, but misses plus, so its like "SFP might not be compatible with SFP" (english version had SFP+)
Can’t count how many times I’ve seen these connectors on an LTT video. That’s where I first saw them and now expect that a server chassis will support them. 😅
Those are common connectors for me. They are used for every installation for fiber optic internet in Canada and since I worked as phone support for those connections, I have become very familiar with them
@@Tanks_In_Space I had to learn about them as customers regularly didn't know how to take them out and one of our steps was to have the customer remove the cable. I take every opportunity to learn hands on then that way I can instruct people over the phone as I can picture it in my head and give very detailed explanations. OH WHAT FUN THAT WAS.
It is about 20 years ago by now, but they look like those optical thingys I stuck into a switch in the early 2000’s to connect a fibre pair when I was a server/network admin. I have been out of that kind of business for about 15 years, so I don’t remember exactly how they looked.
I used to use them a few years ago, when I was doing some work for Allstream. I'd be in a data centre, with the fibre connecting to a Ciena media converter and then copper to a Cisco router, which the customer then connected to. The SFP had to match the fibre type and wavelength for the connection.
Hi Thio. Your YT script for translating and dubbing it on another language is awesome. So many people can enjoy your content even without knowing English. Just a heads up: In my native language (Brazilian Portuguese) "RJ45" are being translated as "Rio de Janeiro 45". I don't know how you can fix this since is an auto translation issue, but it messes with the timing of dubbed lines.
"never look into the end of a fiber cable". THANK YOU for this warning! I have no occasion to walk into datacenters, but this may happen and I could be tempted to do it... now I know! This made my day.
I use these at work all the time :) As you said, it's frustrating how expensive even regular SFP+ is compared to just straight up RJ45, it's more of a problem for enthusiasts with a use case for them than your average home user.
@@pyp2205 i use them at home... because i can. i used to have 4 rj45 from my adsl router until i bought a 5g adsl version. it has 4 rj45 and one sfp+ port. so me being me, i got rid of the 4 rj45 and replaced it with one fibre optic to sfp+ connector to my L2 home network switch.. lets just say i can see a combined throughput of over 200mb/s to the router...
Years ago i worked in an IT infrastructure renovation project and the guys in networking called them GBIC, but i actually think they were referring to SFP. I had a lot of this things laying around. If i remember correctly we used them to connect a switcher to the fiber optic box and than connect all the floor switches together. Standard Ethernet cables for the other hosts in the network.
GBIC ("gigabit interface converter") was the name of similar modules for Cisco (and others?) switches. I think they've been obsolete for nearly 20 years now.
@@bjornroesbeke GBICs were used on the 3550 Series (EOS 2006). They switched to SFP at the 3560 Series which were released in 2004 (EOS 2016). Of course, like anything network related, adoption of the new switches with SFP took years in many cases.
Anyway - we do have quite a number of those devices at work. Mostly multimode. The light in the multimode transcievers is actually visible if you use your phone camera, it helps quite a lot when you try to figure out which side that's the dark side.
Home PC devices now come with 2.5/10GPS connections so if you're mating to a switch with SFP+ ports, make sure to check your transceiver specs to see if they support intermediate data rates, most support only 1/10, not 2.5/5.
A couple years ago I bought a QNAP TS-332X Home NAS specifically bc it came with the 10GbE SFP+ port. Added an inexpensive, older generation 10GbE PCIe card to my workstation, and connected to NAS via a copper "TwinAx" cable. Paid $35 for the PCIe card and cable on eBay.
As worked with fiber optics in Telecommunications, just a pro tip. Never look directly into the tip of the fiber cable connected to any equipment (specially industry/corporate grade) . Power ranges of these equipment can be easily in range of above +20 db and that invisible light running through that fiber can burn your fingers let alone fry your eyeballs if looked directly, you can literally see sparks through the plastic tip if touched to a cleaning cloth dipped in alcohol.
what do you mean? This are just data links and have nothing to do with loadbalancing. This is the physical layer of the osi model. Loadbalancing it way more up in the model.
We have just upgraded our server and switches where I work which is about 250 feet +- between the switches. With that we were already having CPU and Disc usage issues bumping up to %100. Our IT company said we needed these for the longer runs. Since we run our own lines, we needed to know what these were and how to assemble them. Thanks because this was perfect for us. Passed it off to my boss and he was thankful as well.
I have 4 Ubiquiti 10 port EdgeSwitches. 2 of the 10 are SFP cages. So, I bought 8 1000BASE-T copper transceivers, because I wanted to be able to use all of the ports if needed. I was surprised at the amount of heat that was coming off of the SFP modules. I read that they can get hot. But geeezzz! I recently bought a Grandstream GWN7803 (28 ports in all) L2 switch, which includes 4 SFP cages. They're nice to have, if you need them.
they're expensive compared to the much more common 1Gb (or even 2.5Gb) switches but for 5 or 10GbE the mikrotik switches with all SFP+ ports are among the cheapest you can get by far. In fact, I wish consumer grade multigig would move to SFP+ instead of RJ45 because of this exact reason. Everytime I have to connect something RJ45 especially at multigig speeds, the switches i have to get are triple the price.
adoro il tuo software per tradurre i video, è molto utile per i video classici ma per i Roleplay è un casino, ci vorrebbe di migliorare il file aggiungendo le varie emozioni in modo che possa emularle
Great to see the language feature at work again! Just a heads up for future translations. You may want to use the ISO 4217 standard codes when talking about currencies, so it doesn't interpret '$' as a different currency.
These modules have another thing to check - the cable length. Some models officially support shorter runs than expected 100 meters, it can be as short as 30 meters instead.
0:21 Oi, a tradução meio que levou ao literal o RJ45 como “Rio de Janeiro 45” (pois a sigla do estado no Brasil é a mesma), as pessoas geralmente falam “RJ45” no português.
Not all ONU's are made like that. Zhone has models where the transceiver has to be installed, and plugs into an LC connector which than plugs into a terminated SC connection inside the enclosure where the fiber loop is
I've been lucky to be able to work with QSFP-DD (and soon OSFP), It is really cool tech and incredibly fast data rates, even considering that the 400G is divided across 8 channels. My company is making equipment for Cisco, Juniper, et al to test the electromagnetic radiation of their QSFP-DD hardware. When you have a server rack full of these modules, its basically a wall/array of antennae radiating at up to 50GHz, and neighboring racks can interfere with each other if not shielded properly.
A sfp module exist either as rj45 or as fibre. That is the sense of this module that you can decide self if you need copper or fibre. It depends on length of cable. Copper cannot bridge more than 100m. You will need it on each cisco switch and some of commodity. And PoE is availabe, that is the sense of SFP+, it delivers 60 watts instead of 30 of normal sfp.
Well, being a telecom engineer I use SFPs daily :-) Of course I knew the most you said, but still it was interesting to me. I can add that not only SFPs can be incompatible with your equipment, they can be different at all, like Ethernet SFP, used for switches, of STM SFP, used in telephony connections. They also can use separate fibers for transmission and receiving data, as well as they can use single fiber, but use different wavelength signals for different directions. SFP-to-Ethernet is what we use for switches that have SFP ports only and we need to connect it to "copper" equipment.
I work with enterprise gear on the daily, and whilst I've never set up SFP or plugged it in, I'm very aware of it and know what it is. I'm a systems engineer not a network or cable guy. And I had no idea about the different types nor speeds. Cheers for that!
The old timers I work with use the anachronistic term "gbic" to refer to SFPs. We have a wide variety of clients at our MSP. We recently installed a commercial StarLink dish at a rural client site as a secondary WAN. Being that this site has had several lightning strikes I opted to use a media converter to connect the RJ-45 from the starlink to the secondary WAN SFP port on their UDM Pro. Better to have a measure of electrical isolation than have their main router take a lightning strike again. I dug a burnt cable out of the wall when I ran the line too. 🤣🤣
Was super disappointed with the ubiquiti unit. Didn’t support negotiating at speeds under 1gbps. Just needed to add one more port, didn’t need a small dummy switch. Turns out I needed a dummy switch
I installed a 24 port Cisco Switch. and installed 4 SFP Connectors. This gives me 28 channels. The Cable Modem is on one. A bunch of cameras, RJ-45 in every bedroom, 2 in the office 1 for DVR, and one for my NAS Drive. So I really needed the system up and running with the 4 extras. Not done yet.
I used the SFP+ when I was working for an ISP. One coming in from each of the backbone providers, into the transparent firewalls that I built and ran for the ISP. And then one each going out of the firewalls, and again one each going into the big Cisco router. I think that we also had a few going from the router into the big switches.
Correction: at 1:50 you show a chart of latencies between connections and say that "SFP has lower latency than RJ45" Which isn't accurate to the chart. The left column shows "10GBaseT SFP" Which is an rj45-sfp adapter, not direct rj45-rj45(technically 8p8c but that's besides the point). It is the adapter from the rj45 to SFP that is causing the increased latency, vs "direct attach copper", pure sfp to sfp no adapter. I've yet to see any evidence that pure SFP DAC has lower latency than pure RJ45, and at least one video on youtube suggests the opposite.
The compatibility issue you saw is strangely sinister. Inside the sfp chipset is data containing serial number, manufacturer, etc. Network gear manufacturers sometimes hard code their devices to look for only their own sfp’s. Most of the big enterprise players have a command to tell their equipment not to do that, but after you run that command, their support will stop at the sfp port level. Also, your example 10gig throttling down to 1gig is simply because the equipment is inexpensive and doesn’t have enough queue memory to slam 10gig frames at a 1 gig port. This used to be common behavior, even on enterprise gear, back when nothing had enough queue size.
"Rare use case"? As a home lab user, I've got a DAC between my NAS and switch and budget server and switch, so both have a 10G connection to each other.
I use these all the time both at work and at home and at my friends and families houses too. I've got a 10GB NIC for my desktop to interface to my fiber internet to get my advertised speeds from my ISP. I'd like to use fiber but the router from the ISP only has a 10GB copper jack 😞
Here in Switzerland, every house with FTTH has an SFP+ connector for 10gbps connections. Nearly every house (in cities mostly) have a wall plug for SFP+ which connects to the router. Just a lil funfact, and why this connector is actually not uncommon at all in Switzerland! With some ISPs (Init7 for instance), you can actually get 25gbps with SFP28.
Wow... Thank you for the fact that you really get various sound tracks, this allows you to better understand you (since my knowledge of a foreign language is very poor), and listen to your videos with great interest!
Useful info, my use case is an old enterprise switch. I was originally going to use transceivers, but think I'm going to get expansion cards for the two systems getting 10 gigabit connections.
My ISP modem has this to connect the fiber optic cable into it. It was back in 2020 when I got their newest modem I think, it was the first time I saw that thing, so yeah, I saw that thing before! Oh, and it's pretty funny hearing French speeding up and slowing down suddenly, at least it works ^^
I literally got to know these from the LMG vids. For those who don't know, LMG Stands for Linus Media Group & it's the company headed by Linus Sebastian which has YT channels LTT(Linus Tech Tips), Techquickie, Short Circuit, etc.
Even with DACs, you can run into issues when you mix and match vendors. The host device (device with SFP port) and the SFP itself always perform a negotiation, even if there's no actual logic needed for transceiving the signal (because it's just a copper cable). Some devices are more picky than others, on some switches you have to enable a config option to allow unsupported transceivers (ones from a different brand than the switch). Using SFPs from a generic brand can be hit and miss. There's one brand, they're called Flexoptix out of Germany that offers programmable universal transceivers that can be programmed to emulate the behaviour of any other SFP, they mostly work well in my experience. And they're hella cheap compared to the official vendor ones - an original Cisco SFP might literally be 10x the price of a reprogrammable Flexoptix SFP. Then again, the box used to reprogram SFPs is something like 1,5k, so only affordable to businesses that do a lot of installations.
I have often used those, when setting up connections from a carrier to a data centre. With fibre, there are a variety of models, depending on the fibre connection. There can be single or double fibre versions, single or multimode and any of those with a variety of wavelengths (infrared "colour") to consider. Also, you showed a switch with several copper connectors and 2 SFP connections. When there are 2 or 4 connections, separated from the rest of the switch, they're generally used for upstream connections and will typically be faster than the rest of the switch. For example, years ago, I used to work with 24 port 100 Mb switches, that also had 2 Gb ports. Those Gb ports could be connected to a Gb switch, for large networks. The same holds with the speeds commonly found these days.
We’ve had copper sfps weld into switches. So certain switches we only run fiber. The 2 sfps with a copper cable built in are called DAC (Direct Attach Copper). We use fiber for all the infrastructure where I work. Copper inside buildings with the exception of datacenter. All servers that support it are using fiber, some even using 10 or 25Gig.
"...totally overkill for a home use..." I trunk VLANs (between switches) over multi-mode fiber at home - and have a set of spare copper SFPs for use on UTP cables parallelling the fiber if something goes bad.
also bare in mind if you do this on more switches then spanning tree or it's new rstp versions comes into play. Basicly have redundant pathes in the network (which is a big no no in ehternet) and the spanning tree blocks them so no loop ocours and if a link goes down spanning tree will recalculate and enable a redundant link.
@@alexanderg9106: The copper SFPs are spares - only one SFP can be plugged in at a time anyway, and I have them so no other port configuration needs to be changed to swap between SFP media types. There is only one trunked port coming in to any of my peripheral switches.
@@alexanderg9106: And rather than getting fancy with redundant links and equipment, I just swap out failed parts (I have spare switches for everything I run) - It is a home environment after all. 😁
I'm sometimes being in an area with a switch rack. I examined the switches inside that and noticed that most of them were not looking like the Ethernet cable plugs I know. Some plugs(maybe) had two cables attached to them. I guessed that there could be fiber there, but I didn't know much idea. Now I know that the rack was full of SFP's 🤯
When installing AV over IP encoders and decoders, sometimes all the ports become used, the bandwidth or power allowance is maxed out, so we have to stack switches to either increase the bank or add extra ports to the installation.
Excellent video : I have a quick question, Can we connect QSFP to ethernet directly or do we need to convert QSFP to SFP+ and another convertor from SFP+ to Ethernet?
I had recently picked up the TP-Link adapter in your video but hadn't gotten around to install it in my UDM Pro. When you said it was incompatible, it had me concerned and I initially had some difficulty getting it to work. But, I found it does if I set the #10 SPF+ port as a LAN port. I really want it to work as a WAN so that I can use my phone as a backup Internet connection.
Seems to me that the SFF module concept was created not because it actually solved a problem that could not be solved at a lower cost (like having fiber ports built into the switch). But was instead created as a way to charge more for a base switch (to include the SFP interface circuitry) and even more for each module (and have to be periodically replaced); thus doubling the total cost of ownership and profits for something that should rightfully be a much lower cost.
an sfp module is a connector that doesnt specify a medium, unlike any other connector. an sfp connection can be direct attach, twin coaxial, twisted pair, fibre (single mode or multimode, active or passive, any number of connectors), ANYTHING else that may come in the future.
Its just an SFP. We use them all the time in Enterprise switches for connecting fiber and far less less commonly RJ-45. I have a Cisco switch in my room and it has 4 SFP slots. I was planning on running fiber from my room to the router to replace the existing Ethernet over Coax and I would use SFPs on both ends.
I've seen this connector widely used in telecommunication field. It's used to transfer data between the BBU (base band unit, function like the motherboard in PCs) and the RF module (radio frequency ); Which is connected to the sector antenna.
I have a 10G leg of my LAN that supports my desktop computer, my music (composing and creation) computer and server (a Dell Edge R720). I use 10G because I try to work exclusively from files stored on the server which, in turn, back is backed up to three NASes (back in the 80s I lost a fair bit of data in a crash -- that will never happen to me again!). I also have a couple of switches that are 10G in and 1G out scattered throughout our apartment. This guarantees that I'll never run out of bandwidth. For example- my wife and I can watch different movies in different rooms without overtaxing the switches. Incidentally, I also ran into the exact same problem with that Netgear switch. I changed it out with a comparable Ubiquiti switch and the problem vanished. I have a Ubiquiti DMPro and a Ubquiti aggregator. Almost everything there is SFP+ to copper, though I do use a couple of SFP+ RJ45 adapters. By the way, though I'm pretty good with the stuff, I always learn something from your videos! Keep up the great work!
The technology behind automatic translations is impressive, but the audio speeding up and down to match the original speed is kinda weird sounding. Also it seems like sometimes it's just translating word by word rather than full phrases and it ends up with a phrase that doesn't quite make sense in Polish, but I was surprised how it handled proper nouns.
When we upgraded our core environment. Everything went fiber to the distribution switches. But I had to dig up some of these as i need copper ports at our cores for certain devices.
We have a few of these in a few businesses we look after as you said it tends to be SFP from Switch to switch put we also have teamed SFP into host servers to run a 20gbps uplink to those.
I have a whole home network setup with a TrendNet 24-1GB and 4 SFP+ ports. I have one sfp port for my Pc at 2.5Gbps and 2 for my Synology DS1618+ duel 10Gbps (Aggregated) to equal 20Gbps. It works very well with the SFP+ and RJ45 adapters.
When I was in the military we had a connector that had about 120 pins in the connector and could transfer almost a terabyte of information in less than a minute however this requires a special setup to work properly and even then it's not particularly easy to use or get maximum speeds during transfer.
I have to plug in one of these SFP+ adapters for my modem's fiber internet connection. There is one 10 GbE port on my modem, which I can break out to other devices using a 10 GbE switch. I use a TP-Link TL-SX105 for this purpose.
It auto switched to polish for me and I have to say, it's pretty amazing that you can do that now, but the constantly changing speed of the narrator is sometimes distracting. I feel like inserting a bit of a pause instead of slowing down the speech might be a good idea in some cases to make it "flow" better. There are some mistakes/things translated "too directly" where some context changes the word we would use in polish, but it's usabe. I still prefer to watch in english, but that was to be expected as I can hear the original in sync with the video and without any mistakes. Really nice!
and here I am, trying to get 2.5 gig to the entire house, and this switch I bought is 4 2.5 gig ports and 2 SFP+ ports... sure hope I can circle chain a few together
