@@LtShifty You beat me to it. Jake would be the just hired youtube trained net admin and linus is the IT boss with literally no experience but it all seems plausible to his tech brain... This is all very flawed.
As a network engineer, I feel like Jake is the new network admin, doing things because he just learned about it and it was cool but not bothering to ask if he should, while Linus is the host who doesn't actually know anything about network infrstructure.
There really needs to be a company wide email for "Linus is filming a video involving networking or data storage." Because one of these days there will be something important happening when the first cable is unplugged.
@@RyTrapp0 Having to go check his editors to make sure things are not being uploaded = positive content. Having some "chaos" ensue = negative towards the hosts. Why would they write that in? Their videos are staged in a running schedule. The editing employees would literally know from the sheet, hey looks like we will need to get an editor on deck for the "Changing our network topology yet again" video in 2 days. Let me pull up.... Ok so shooting is tomorrow. And that's if Linus or Jake did zero notification (which would be stupid, linus has been running the company for years he knows how many problems internet outages create).
Except Jake is an absolute Hack who's lucky his friend gave him a job, he wouldn't survive a week in a professional environment with the amount of fuckups and terrible decisions he makes.
As a NOC technician this was an interesting watch. Swapping from single to multi or a bidi optic is a neat way to manage this issue. Also can confirm. LGX to switch and out to other LGX is to manage the speed you subscribe for lol
@@marvsjunk5845 I do realize that but i was thinking that having physical access to the switch could possibly enable the customers to change its settings somehow or something
@@hristosmourselas3939 I work for an ISP, and no, having physical access to the switch wouldn't allow EUC (End Use Customer(s)) the ability to change the queues. MGMT ports are always disabled as an industry standard against physical intrusion. Also values being changed, would cause conflicts on the main router switch. I.e let's say in theory you used a software attack on the Premise Switch, gained access to the mgmt network, ran a dictionary attack to login , than managed to deobfuscate the ARP/BGP Table, find the Entry corresponding to your account, change your queue - the values wouldn't match the primary Router. Also, Intrusion Detection is a thing, and you wouldn't get past the dictionary attack before the ISP shows up on site with the police. Furthermore, they leave out a pieces of hardware which further manage the Optical network, called an OLT, ONT/ONU - NTE ! Hopefully this provided some insight!
I was a commercial and industrial electrician my company got a contract for a data center.The contract company never Having even heard of fiber optic cable I got the responsibility of running it for a 300 computer wing of the building only because I had heard of fiber optics. Everything was done by a tech telling me how to over the phone. Just a joy to work on!!! Awesome vid
Watching both of them react along the journey is the true treasure to behold. Such raw dissapointment, such... sincere confusion, such apprehensive moments of excitement! I give it 5 stars
Hey, I am an OSP engineer mostly specialized in aerial deployment. I love watching how businesses like you deploy our services. Feel free to reach out if you ever have any questions about how networks are planned from an ISP standpoint
Im a network installer and these cable infrastructure videos are hilarious. they remind me of when i first started doing this kind of work before i knew all the tricks of the trade and struggled lmao
It was especially funny to see him be so super careful not to touch the end of the LC connector as to "not dirty it", we at bell use SC connectors but that still doesnt stop me from accidentally dropping the end of the spliced fiber into the dirt and acting like nothing happened when im splicing inside the demarc lmao
Not a network installer, but we have a very large warehouse that we ran multi-mode fiber through, what always cracks me up is how they are always just running a pair of fiber everywhere. It's not that much more expensive to run like 12 fibers and put a cassette at either end. Then if you need to extend the fiber or make a backup loop you don't have to run more.
Will the soap dry out and get gummy sticky? FYI if they got the 2 cables mixed up they could have plugged in one cable and used their phone camera to see the laser. The laser shows blue in a cellphone camera. **never look directly into a live cable with your necked eye**. Also works for "looking" into a transceiver figuring out what end is sending (blue light in the camera) and which is receiving no light in camera.
What a great video to watch. My job is a comms engineer for rail infrastructure, and we are currently adding 9 CH (18 wavelength) CWDMs to split a existing duplex link between control centers into 18 links instead, all 10G in this case. We are lab testing the FS CWDM units now before rolling out on site.
CWDMs are great. I work for an isp and we use them all the time to upgrade to possible number of connections at customers with just 4-12 strands. They are extremely cheap and easy to install. For connections between backbone parts we even use DWDMs with up to 96 channels, each channel up to 100gbit. We are able to get multiple tbit/s in both directions with just two physical fibers, it’s actually insane.
@@chriswright8074 You either - are connecting to your own infrastructure which is 10gb - are connecting to your own or otherwise cloud infrastructure that is 10gb, many servers are at least 10gb but more like enterprise stuff for work not consumer. - are one person downloading from multiple sources at once - this can be 2 downloads, parallel downloads or e.g a single torrent with a hundred peers, or a single web download with jdownloader or aria to split the connection so it looks like multiple people - are multiple people sharing the connection
Top tip: tie the string to the string FIRST, then attach the fibre to the contiguous string so that if your fibre lets go, you've still got a string in the conduit 👍
I was a field service electrician for many years, and now I manage the field guys for my company, I can't tell you how many times guys screw things like this up that you would think is just basic common sense. Nothing like a guy losing his wire on a 400ft pull, then calling and asking me "what do I do now"... sheesh.
And when the two pull cords are tied and then taped together the pulling tension load is on the pull cord combo and almost zero load on the actual fiber. another tip is to insert the duplex fiber connector into a small zip lock bag, wrapping the bag with tape and then taping to the pull cord is a method to keep the fiber connector clean. Clean from lubricant & clean from electrical tape adhesive residue. Linus washing the pulling taped connection in the sink was priceless!
@@CoDJumpMaster wouldn’t you just go back to the entry point and pull the string and fiber back out? Though I guess you’re still missing the pull string in the conduit at that point. That makes me curious, what DO they do now?
Yeah, him messing with Jake at the beginning of the cable pull through the under-sink conduit and Jake saying "I just did this yesterday, you're screwing with me" totally had Oscar vs. Michael vibes 😂
Hell yeah BiDi! I'm a fiber engineer for a small ISP in north Idaho and 99% of the time single mode is the way to go. Plus some of the more recent BiDi modules are awesome for performance and are incredibly cost effective.
If both ends of the duplex fiber are unplugged, just point a flashlight at one of them and you will know which is which at the other end because it will light up. Note, do NOT look directly into the end just in case it is still plugged in. Point it at the wall or something.
@@naspiratx If it is plugged into a switch, yes. But I'm talking about shining a visible light (not laser) at one end and seeing which other end lights up.
I work in the telecom industry, and troubleshoot networks like this every day. Awesome to see something I work with directly! We are currently deploying 400G capable equipment throughout our network and use WDM/DWDM in many cases.
@@AdrianMaunder It's not for us, it's to transport traffic from all of our customers across our network to multiple data hubs. We break down the 400 into 4 100G circuits, then with a mix of path diversification measures, bundle a ton of connections under those and ship them to where they need to go, dropping into more nodes and further splitting out to their end destinations.
This was such a fun video that brought back memories. First, a few points: (1) Every electrician knows you should uncoil your cable BEFORE pulling it. My brother would unroll Romex by placing it over his arms and rolling his arms over one another (Travolta - Saturday Night Fever). This unrolled the wire without flat spots of kinks. (2) We used Yellow 77 back in the 1970s when I pulled cable for the Bell System. It was 25 pair; huge compared to fiber, so the lubricant was critical. Talking about multiplexors, we maintained many in the data center when phone links and dialup were the thing. I remember how useless all that old tech became when we pulled out all the old 25 pair cables and our network techs began pulling in fiber to replace them in the early 1990s. We were so impressed that all you needed to do was alter the color of the laser to change the fiber speed.
As a transceiver engineer defining the module specs for such transceivers (and some as fast as 400Gbps), this video is so exciting to watch! Especially Linus figuring out how to link-up the BiDi without burning them 😄
FYI if you break your pull string or dont have one, you can tie part of a plastic bag to the end of twin and a shop vac on the other end. As long as the conduit is empty it will pull it through very nicely. You obviously need very light twine, then can use that to pull bigger string if needed. The vacuum is also useful to ensure you have the right conduit.
Also tie the backup pull string first and "upstream" from the cables. So maybe if the cables disconnect you still have the backup pull cord to either start again or hopefully pull it a bit more easily
ISP employee here.. pulling cable halariously acturate. suggestions if yall are going to do more content like this. fiber coupler is called a bulkhead. 2- invest in a light power meter, and otdr. 3- muliplexing uses a mux and de-mux, basically a fiber splitter. love you guys!
Telecommunications engineer here. It's like watching an apprentice and you want to say something but you can't. I second power meter and OTDR but would add: fiber cleaner pen in SC and/or LC to remove dust particles when unlucky and 650nm laser pen for identifying your line or sometimes damage. (suggest a maximum of 30 mW to avoid burning out optic if used on a live fiber) Multiplexing specifically with single mode fiber referring to a CWDM or DWDM. love you guys getting us work :)
Great to see something that I work with on a day to day basis, we use SM fibre to run 100gb between sites but can push up to 400gb on one single duplex connection.
Really liked this video! I'm currently studying for the comptia net+ exam, so seeing you guys do networking vids is cool to watch. Reading about something in a textbook and then seeing it in action/ practice gives a certain tangibility to everything. Please do more!
All my childhood I heard my dad, electrician, talking about pulling cables. Today thanks to Linus and Jake I've learned how it actually works, feels like something got complete in me
Fun tip. Whip out your cellphone next time and plug one end in and on the unplugged end just point it at your phone camera. You will see the light from the fiber that you need to use.
Yup! I cringed when Jake plugged-in the second transceiver before Linus verified which side of the pair was lit vs dark. Phone was already in-hand, it would have taken 5 seconds
As a fibre engineer in the UK, I absolutely LOVE when they talk fibre - Also I massively approve on back roping the pull cord (it seems obvious but it is missed more than you think) 😎 Linus and/or Jake, have you ever explored splicing fibres before?
@@MrultiPaul you get a cobra and start roddin the duct with such ferocity that to someone standing behind you it looks like your interfering with yourself in a ditch
You either blow a string through (which is tough with a cable already in the conduit) or suck one through with a vacuum. We used to tie a grocery back to the string and blow it through with an air compressor. You’d be surprised how many fps it will move
This is part of what my current job does. We have set up similar wireless receivers that could reach 25 miles with similar speeds; however, this was done on a building about 12 stories high and mounted on its flag pole. Multi-channel fiber is always the best path. Some job sites have underground tunnels connecting multiple buildings to add more connections in the future. I cannot wait for an intelligent switch that uses all fiber connectors and manages each input.
I am shocked nothing was made of that level like what we have for ethernet. Like, seriously. And the military has had fiber for longer than us and they are on the forefront of this.
@@TheDemocrab This year I went from 20Mbps over LTE to 1Gbps over fiber. It's a mindblowing change, but tbh I rarely exceed 600Mbps since there is not much services which need more. However, downloading from Steam is a whole new experience
I will be sharing this video with my coworkers (we all do private networking/fiber buildouts as desk engineers). Many of them have not yet made it to the field so physical size of fiber wiring, constructability on properly pulling fiber/cables thru conduits, and understanding how to properly debug fiber connections "I don't have light - Roll the fiber! - I GOT IT!" is lost on them since they don't get to the field much (budget constraints on projects, some PMs don't see need to setup field visits for simple projects). I love videos with this content, but I love your explanation of these ideas even more. These are great educational tools for engineers, field crews, and technicians alike.
I love the 3 stages of Linus: 1) "Everything is working" 2) "I lied, nothing is working" 3) "Wait, it wasn't working since some time? Then i lied again, everything is working (as intended)"
You could perform an IPerf/JPerf test to check connectivity and bandwidth which could get you quite decent results.(If i'm not mistaken, it does have the ability to perform a test with this bandwidth). just remember to always use the -b flag to limit the bandwidth, otherwise it will limit you to 1 or 10mbps.
There's a few reasons you'd use BiDi, leased runs like they suggest, or even within a datacenter where you're charged per core for structured cabling. If you can install half as many cores and pay half the MRC, BiDi makes a lot of sense. The optic cost is also much lower at 10G as opposed to 25G, too.
usually Bidi is done because you just don't have enough fibers in the ground to serve everything duplex. other than the optics being much more expensive there is not really a problem with it.
@@kaelev8077 they're still used a lot, even in plants with 288+ count fiber. PON technologies are all BiDi, DIA with medium to small ISPs is deployed near exclusively with BiDi. WDM is the name of the game these days.
Just so anyone reading this knows in future, you can use the camera in your cell phone (cause of the IR sensor) to see which fiber is illuminated when they're plugged in, rather than play "left-hand, right hand."
I accidentally discovered this fact 30-odd years ago as a kid playing with my parents' camcorder. I found that pointing a remote control at the camera lens and pushing a button causes the IR transmitter LED on the remote to glow blue-white in the recording. Nowadays, cameras are still the best IR detectors.
If yall are doing a lot of fiber running I would recommend getting some Visual Fault Detectors. They just shine some red Light through the Fiber. And maybe also some optical power meters so you can see if the Signal actually arrives where it should
Jumping on the “As a train” I am a technician in the US for a telecom company. I’ve learned so much from you guys over the years. On the customer end we rarely get to see how the service is actually utilized. In my experience we usually connect our equipment and we screen share via Zoom to whoever manages the IT for companies they verify the subscribed service. Later they come and do whatever they intend to do . (And we usually take the fall for them not being able to utilize their new services until they have a visit from their crew.) 😅 I often times just connect them if it’s something not too involved and in the scope of my knowledge of how it needs to be connected and so forth.
I love infrastructure content like this. I remember how terrified I was the first time I had to work with fiber endpoints. And Jake's pointless errand was priceless. And I totally believe that Linus would waste Jake's time the same way.
I love this, It's just like Luke and Linus are kids that just got let in into the office with grownups and cool stuff and they just do their thing not caring about anything
What a great video. Also you really see how nice of a guy Linus is. He cares about everyone working around him. Constantly joking with them and this shouldn't be controversial, he says sorry to them. That may be his maple syrup blood though.
As a network engineer and having delt with dark lines from ISPs, it's quote likely that LMG already had permission to use any of that 12 strand fiber since it was installed for their use. While moving to bidi is cool and does work that part might have not been needed and they could have just pulled the pair and connected it without a problem.
I am a supervisor for a fiber ISP...this video is every day of my life 😅 The difference is, it's funny when you are just goofing off to upgrade your connection for content. It's a nightmare when it's a new install and messing up means a business has no Internet at all 😂
These are my absolute favorite videos from y'all!! And I end up needing this knowledge like 4-6 years later lol. Getting into homelab now and I'm like ohhhh that is what they were worried about in that one video. And I understand the yolo mentality now, make backups and just go for it and learn along the way...
window cleaner spray works great for pulling cable. I used it all the time in my old job running cables in 991 centers. the best part is that it dries quickly enough and does not leave a mess after.
The AF60HD antenna is actually really stable, I knew from your first video you would have issues because of the height - pretty sure I mentioned it too. I have the AF60HD running steady as well as their AF60LR's, having over gigabit speeds through the air is amazing but yes fiber is king so grats on the upgrade LOL🚀
For the Linus group. When trying to work, out witch fiber is what and where it goes, you could try using a lower powered laser pen, down a cable and someone on the other end watching, text across coms locate and mark off each cable. I did similar with, muilt speaker setups with a AA battery, across the wires, the speaker that makes a noise, and job done.
DWDM/CWDM ftw. Sadly the optics are kinda expensive. Especially the tunable ones. In the carrier segment we deploy 400G-ZR+ currently for metro and even long-haul.
@MegaCyklops Also, the E2000 connectors are pretty expensive, but an added benefit is, that they got an integrated dust cap, which prevents people from directly looking in to the fiber.
@@MegaCyklops I work in resi and commercial coax and fiber, but I've never done any cellular work before, but have been extremely curious as to how it works. Do you by chance know of any write-ups or anything that I could learn from?
@@MegaCyklops Did a project with sending 4x 10 GBps over 80 km with CWDM. All on "consumer/business" devices Amazing what technology is able to provide for normal business.
I'm a pc enthousiast,I dont understand anything about networking at all, but I love these videos, makes me feel like you guys know I understand. Greetings from a Dutchy.😘
couple tips to make fishing a bit easier, tie the new pull chord onto the old one then do 3-4 half hitches around the cable, snug them up then tape, since the new pull chord you guys used was pretty thick and the conduit was a bit small it wouldnt make that pull easier but in general if the first thing you do is tie the pull strings together you probably wont lose them. second tip is if you do a half hitch around your screwdriver or pliers you can have a nice handle to pull with, have the screwdriver in one hand and when you pull keep tension on the chord with your other hand, relieve tension on the knot and you can slide the screwdriver forward to pull more. not only is this a bit faster it'll save that string digging in your hands as you're reefing on it
I really thought the dish soap suggestion was a joke... But then jake poured it right down the pipe. Dishsoap can corrode the outer casing of any wires or fibers in the pipe. Granted this will take years to happen. So i guess we'll see. This is why you use the lube linus was talking about
My favourite type of LTT video. Enterprise tech but DIY and makes you feel like you could do this in your own home and learn something new at the same time.
It's so nice seeing content about things that are relevant to things that I get to be hands on with everyday. OADM, Multiplexing and Fiber is such a deep rabbit hole if anyone is ever looking for a niche industry to get into
Fiber is not a niche industry. The government is currently throwing money at people to build fiber anywhere and everywhere. Meanwhile, every datacenter connection in the past decade has been fiber. Some datacenters won't even sell a non fiber cross connect anymore. Sadly Linus is making more videos on what not to do, as he lets Jake do everything wrong.
Yeah i agree , also an expensive industry for the tools , but clients never seem to want to pay :) .. Im in Telecoms as a fibre optic specialist .. Started my own little company .. Tools cost as much as a small house , but then people dont want to pay for the service lol ..
@@RyTrapp0 Yeah man to put it into context , the OTDR we use in south africa is EXFO ( its all that any telecom company allows ) now imagen the machine costs 20K USD and you get paid 2 USD per test lol ... and a test takes 90 seconds but sometimes you only need to test 12 other times 288 ... Clients still complain its too expensive .
I'm late to the party but it's good to have a fiber laser and power meter to test your light level and make sure you are on the correct side of the fiber. It's also always good practice to clean your fiber with either a cletop fiber cleaner or fiber cleaning pads with alcohol. A lot of the time the fiber comes a bit dirty right out of the bag.
You made me laugh so hard. I pulled 40m homefiber in my photo studio, so I have gigabit there for using the full potential of my internet. I did so many same steps (lube, another pull rope, tangling the fibers and so on) It was so nice seeing somebody else do it while sitting in my livingroom. It took me forever. Great work guys, I’ll book you for my next project ;)
I Installed DWDM multiplexing for a county in Iowa to do exactly as you said... save on fiber between towns, we were running 4 x 10 gig networks over 1 fiber, cool stuff, if you just want to play with a piece of equipment get a fiber optic spectrum analyzer, the one I was using was from EXFO it was awesome
Pro tip: when pulling wire through a conduit, use COLORED electrical tape (3M 35 works great). Colored tape doesn't leave the sticky residue like black tape does.
For the _"are you using the left or the right one?"_ you can shine the phone light through the wire. Less powerful than a laser, but in theory should work for direct connection. _I've done it with audio cables before._
They make special red light to do this. Phone lights are too scattered to be meaningful on 10 micrometer fiber. Audio cables are 1 millimeter in width, by comparison.
The actual tech tips in this video are pretty mild, but the interaction between Linus and Jake made this one of the most entertaining LTT videos I've seen in a while! Caught myself grinning like an idiot several times throughout! 😂
@LinusTechTips, The provider has a switch as their DMARC, this isn't to do traffic shapping or routing most of the time. Its to do SLA and End to end provisioning and scoping. This allows them to track things like fiber cuts between the main fiber line and your DMARC, as well as provide jitter, latency, and optical power levels. Lastly, it also depends on how the connection was provided, if its a Wave service, VPSL, EVPLS, DIA, etc.
DMARC as you've used it here is an acronym for a set of e-mail authentication requirements. What you're looking for is "demarc", short for demarcation point.
Better option and futureproofing would be a pulling a standard 32f cable (they're used by network providers and are cheap) then splicing couple of fibers. I was surprised you didnt send a red light and test the signal with OTDR. Moreover guys, you can get a fibre port cleaning kits and show people how easy it is to clean it.
Seriously informative! Pretty much all about this feels very familiar and has almost all the tips I would give. The BiDi adapter explanation was spot on and showed all it needed to show. The WDM rabbit hole gets very interesting, but it's tempting to dive too deep. (but would make for a cool video, if you ever get a 3rd building...) I *always* unroll fibers in advance, it takes you a few minutes to do properly and saves, well, hours. (not that I didnt learn that the hard way) Visual Fault Locators are useful for showing *which* of the fibers is in use (and are pretty cheap). The white cap on the other end should light up (a little) or shine the connector on a piece of paper. Fiber Cleaners are useful, just in case you touch something with the end of the connector (or a mote of dust gets in there). For thinner conduit, you can use the same BiDi trick with a simplex (single strand) fiber, so you halve the connector size. OpenSpeedtest is available as a docker image for your server(or firewall) and allows you to check fiber throughput and reliability over a longer period of time.
I've just gone down the CWDM rabbit hole, upgrading a link between 2 sites that had 2 diverse duplex links. We're going to the FS 9CH per simplex CWDM, giving us 36 links instead of 4. Great as we have multiple networks that must remain separate due to the systems running, it's fun using a mix of 10/40G optics, some decent inter-site capability.
@@zeealpal Dest of luck! Fortunately, it sounds like you have 4 circuits, so you can probably keep 3 up while you insert a MUX on each side. You prepate it *very well* and test every link in advance (LLDP is magic for this), you do it with the least amount of sphincter-tightening per change. *ENJOY* the absolute speed and adventure you will get out of this!
I love that even when in the middle of a super-important process that could absolutely wreck the compnay if it's done wrong, Linus & Jake still bicker like an old married couple. I love it XD
Fun video and mostly very accurate. However, for watchers in a similar situation. if you plan to be in the location for more than a few years, pay someone to run, terminate and test an armored 24-stand SMF (Single Mode) with LC UPC connectors (similar to isp) from the MPOE to the other building's server room and be done with it. I suggest using UPC (blue ends) in all situations, APC (green ends) is not very common and is really used for things like ultra-high RF frequencies, and long haul WDM, DWDM, etc.
Tip for you, to ascertain which fibre is which, get a cheap LED torch and shine it down Fibre link, the person at other end can look at his fibre ends and see red light, so he/she knows which is the fibre you are both gonna use. Not so bad if you only have 2 as you have a 50% chance, but if you are using Multi core, then this is best way to see.
I work for an ISP and we run DWDM for our state-wide fiber ring. We're running 40 Gbps for our core links are we have dozens of customers running 100 Gbps. We are deploying new Packetlight gear so we can start upgrading our core and ring to 200 and 400 Gbps links within the next few years. ISP-level gear is wild.
21:46 Linus, that is exactly the *OPPOSITE* of how you should pull. You *NEVER* pull at a 90 degree angle compared to the conduit, always pull in parallel with it, never perpendicular!
At 7:55, I can't help but compare Linus' miming to something I saw in the bloopers for the Drew Carey variant of Whose Line Is It Anyway?, where Ryan does similar to the director (who he loves calling a 'British a**hole') and when the director turns Ryan's back to normal, like Linus. I love this kind of unscripted thing.
As a retired Senior Network Engineer for a major University I was ROFL my you know what off. The cringe moments were many and I decided to text some of my old colleagues to use this as a training video for the new kids on how not to handle fiber. Glad you all were fortunate enough to have it work.
30:00 keep in mind that the prices for official vendor SFPs (Cisco/Palo Alto/etc) are many times more expensive. Generally, you can at least 10x the FS prices and you get the prices that enterprises actually pay. The reason they pay for this is because they want vendor support, SLAs, etc.
Keep in mind that most of ''official'' SFP come with a better QC and with self-diagnostic feature who ''compatible'' ones don't have. Earlier with 1 or 10 Gbits official or compatible doesn't really matter and I sell an used more compatible than official without issue. Now on 25/40/100 Gbits link, we got A LOT MORE issue with compatible SFP than before and there no magic to it. For sure official SFP are almost 10x prices and this 10x isn't entirely justified but in fact, for the past 2 years I was force to replace compatible for official for many of our customer, and for short link (25/40 DAOC 1meter) and for long ones. (40Gb ER4 from FS are crap)
I’m about 95% successful with FS transceivers 10gb single mode LR. I have had no issues with multi mode SFP+s. But most of my enterprise customers buy real Cisco gear. On the other hand, they get huge discounts from Cisco such that it’s not the same 10x cost.
@@Bill_N_ATX yes Cisco can go to 85% discount on big order... so public price are not really relevant. As for your previous statement , yes almost no issue with 1 or’10 gigs fs sfp. Issue come on 25/40/100 gigs ones
As someone that job was setting them up for AT&T, that last box is to limit your internet. All of those cables have 10G of capacity that is than limited down to how Much you pay for
Good to know. I work in school IT support. All of our schools have a Cienna switch installed. I always assumed it was just the hand off from their network over to us.
@@SchnitzelDaemonmy first thoughts, too! I remember first DSL days were similar... and if you worked out the Telco password, you could just tell your modem to run the full 256kbps instead of the 28k you were paying for!
How much do you want to know? So one of those boxes is a hand off from the company that owns all the underground infrastructure to your service provider for all of California that is AT&T it doesn’t matter who you get internet from it is AT&T. You can circumvent the restrictions but you need to be in the business.
If I remember right, in addition to using different wavelengths of lights, the light can also be bounced off of the cable at different angles. This means that one cable can replace dozens or even hundreds of individual fiber optic cables.
Carriers are using own equipment for multiple purposes. Yes, I've encountered ISP using switch at client office for traffic shaping purposes (saves resources on their core), but it also simplifies link quality monitoring. Also, they can do any reconfiguration (like VLAN tags) without asking client to do the same.
Its called NIDs. There are multiple MEF standards on them. They allow rate-shaping, handoff of multiple services, QoS, SLA monitoring, etc. on site without sending a technician.
I used to do commercial VOIP and digital phone installs so this type of video is very entertaining. Yall did pretty good for dudes that don't do this every day. Nice job.
I was only going to watch a bit of this to see what they were planning, but it was so entertaining that I watched the whole thing! It really warms my heart to know that my projects aren't so different from theirs. I feel MUCH more professional now.😁
13:30 Linus shall not be fiddling with the fiber when Jake's end is plugged in. Even though cap is on, it's very easy to accidentaly point it into your eye when plugging into to SFP, especially when you are holding it right in front of your face. You should be doing it either making sure your eyes are safe OR having power turned of (ie. sfp unplugged from power)
Not unreasonable the provider just "gives" them the SFP port on the provided switch and put that into the contract as their demarc point, anything beyond that including the SFP module being the customers' responsibility.
30 years in IT and its great to see content like this and how folks can quickly grasp these concepts, while I wouldn't hire you guys, your videos and outcomes are fit for purpose.
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As a Network engineer I feel like Jake is the engineer and Linus is the new Network Administrator that’s super excited but a little clueless.
You're a network engineer, and you don't see how utterly inept Jake is? Seriously
As a fellow network engineer, I agree.
@@LtShifty considering he is not a Network Engineer or Admin I think he does a half decent job most of the time.
@@LtShifty You beat me to it. Jake would be the just hired youtube trained net admin and linus is the IT boss with literally no experience but it all seems plausible to his tech brain... This is all very flawed.
As a network engineer, I feel like Jake is the new network admin, doing things because he just learned about it and it was cool but not bothering to ask if he should, while Linus is the host who doesn't actually know anything about network infrstructure.
There really needs to be a company wide email for "Linus is filming a video involving networking or data storage." Because one of these days there will be something important happening when the first cable is unplugged.
@@chandler2 because they literally never alert anyone of major changes to the network topology
@@jigglypug9239just because it doesnt happen on camera doesnt mean that it doesnt happen...
@@jigglypug9239 ever heard about "acting"?
@jigglypug9239 Sometimes, with comments like that, I am on the way to understanding why some people genuinely think the earth is flat.
@@RyTrapp0 Having to go check his editors to make sure things are not being uploaded = positive content. Having some "chaos" ensue = negative towards the hosts. Why would they write that in? Their videos are staged in a running schedule. The editing employees would literally know from the sheet, hey looks like we will need to get an editor on deck for the "Changing our network topology yet again" video in 2 days. Let me pull up.... Ok so shooting is tomorrow. And that's if Linus or Jake did zero notification (which would be stupid, linus has been running the company for years he knows how many problems internet outages create).
I’m an IT engineer at a pharma company, and this is basically everyday stuff for me. Super cool to watch 😊
Network engineer at an ISP group and I agree with your statement
Office improvements with Linus and Jake is the best LTT series 🙂
100% this 💜
It's up there with house improvements with Linus and Jake
It's really not if you happen to have even the slightest clue of what you are doing.
They do tutorials in how not to do infrastructure.
@@THETACHIchris And how exactly is that bad content 😜
@@THETACHIchrisno one said it was the"correctest" content, just the bestest content. Get over yourself
The chaotic energy between Jake and Linus is always fun to watch and this video is just perfect because of it 😂
Father and son love is great, man.
Except Jake is an absolute Hack who's lucky his friend gave him a job, he wouldn't survive a week in a professional environment with the amount of fuckups and terrible decisions he makes.
It's so real and genuine, I'm a hvac tech and my jurnymen and I are like this for new things to the t to teach me 😅😅
It's really fun for a video, but it would annoy the hell out of me if it was a coworker 😅😂😂
@@StewChicken42the funny thing is, jake is definitely the father
As a NOC technician this was an interesting watch. Swapping from single to multi or a bidi optic is a neat way to manage this issue. Also can confirm. LGX to switch and out to other LGX is to manage the speed you subscribe for lol
Why would they do it like that? Wouldn't it be possible for the customers to tamper with it somehow?
@@hristosmourselas3939 No. The unit at the ISP looking for the MAC from the Switch which is limiting. If it isnt there you wouldnt get anything.
@@marvsjunk5845 I do realize that but i was thinking that having physical access to the switch could possibly enable the customers to change its settings somehow or something
@@hristosmourselas3939 I work for an ISP, and no, having physical access to the switch wouldn't allow EUC (End Use Customer(s)) the ability to change the queues. MGMT ports are always disabled as an industry standard against physical intrusion. Also values being changed, would cause conflicts on the main router switch. I.e let's say in theory you used a software attack on the Premise Switch, gained access to the mgmt network, ran a dictionary attack to login , than managed to deobfuscate the ARP/BGP Table, find the Entry corresponding to your account, change your queue - the values wouldn't match the primary Router. Also, Intrusion Detection is a thing, and you wouldn't get past the dictionary attack before the ISP shows up on site with the police.
Furthermore, they leave out a pieces of hardware which further manage the Optical network, called an OLT, ONT/ONU - NTE !
Hopefully this provided some insight!
Or its to drop a DWDM wavelength to the switch using channelized optics. Not always doing QoS management on those ends.
I was a commercial and industrial electrician my company got a contract for a data center.The contract company never Having even heard of fiber optic cable I got the responsibility of running it for a 300 computer wing of the building only because I had heard of fiber optics. Everything was done by a tech telling me how to over the phone. Just a joy to work on!!! Awesome vid
The editing going back and forth while Linus was looking for the conduit was S-tier. 🤣🤣
Oh yeah man comedy gold😂
This.
Love this moment 😃
Linus crossing his arms and looking at Jake with the "cmon man" eyes was gold
Watching both of them react along the journey is the true treasure to behold.
Such raw dissapointment, such... sincere confusion, such apprehensive moments of excitement!
I give it 5 stars
I like how he starts off with, "Im getting away from doing things janky" ... Jank ensues
Hey, I am an OSP engineer mostly specialized in aerial deployment. I love watching how businesses like you deploy our services. Feel free to reach out if you ever have any questions about how networks are planned from an ISP standpoint
No ur not
@@realcartoongirl😂😂😂😂
I'm also working in osp field. I deal with permitting for new underground and aerial fiber placement.
@@realcartoongirl bro just got real jealous
Im a network installer and these cable infrastructure videos are hilarious. they remind me of when i first started doing this kind of work before i knew all the tricks of the trade and struggled lmao
LOL me as well. im a field service tech for Bell Canada
It was especially funny to see him be so super careful not to touch the end of the LC connector as to "not dirty it", we at bell use SC connectors but that still doesnt stop me from accidentally dropping the end of the spliced fiber into the dirt and acting like nothing happened when im splicing inside the demarc lmao
Not a network installer, but we have a very large warehouse that we ran multi-mode fiber through, what always cracks me up is how they are always just running a pair of fiber everywhere. It's not that much more expensive to run like 12 fibers and put a cassette at either end. Then if you need to extend the fiber or make a backup loop you don't have to run more.
I've been suggesting them to try running fiber and do field installable connectors for a while. That would be an interesting video to show.
Will the soap dry out and get gummy sticky?
FYI if they got the 2 cables mixed up they could have plugged in one cable and used their phone camera to see the laser. The laser shows blue in a cellphone camera. **never look directly into a live cable with your necked eye**. Also works for "looking" into a transceiver figuring out what end is sending (blue light in the camera) and which is receiving no light in camera.
What a great video to watch. My job is a comms engineer for rail infrastructure, and we are currently adding 9 CH (18 wavelength) CWDMs to split a existing duplex link between control centers into 18 links instead, all 10G in this case. We are lab testing the FS CWDM units now before rolling out on site.
Dude what's the point of 10gb if no servers gets at that speed it all about the server you connect to
CWDMs are great. I work for an isp and we use them all the time to upgrade to possible number of connections at customers with just 4-12 strands. They are extremely cheap and easy to install. For connections between backbone parts we even use DWDMs with up to 96 channels, each channel up to 100gbit. We are able to get multiple tbit/s in both directions with just two physical fibers, it’s actually insane.
@@chriswright8074 You either
- are connecting to your own infrastructure which is 10gb
- are connecting to your own or otherwise cloud infrastructure that is 10gb, many servers are at least 10gb but more like enterprise stuff for work not consumer.
- are one person downloading from multiple sources at once - this can be 2 downloads, parallel downloads or e.g a single torrent with a hundred peers, or a single web download with jdownloader or aria to split the connection so it looks like multiple people
- are multiple people sharing the connection
Top tip: tie the string to the string FIRST, then attach the fibre to the contiguous string so that if your fibre lets go, you've still got a string in the conduit 👍
I was a field service electrician for many years, and now I manage the field guys for my company, I can't tell you how many times guys screw things like this up that you would think is just basic common sense. Nothing like a guy losing his wire on a 400ft pull, then calling and asking me "what do I do now"... sheesh.
And when the two pull cords are tied and then taped together the pulling tension load is on the pull cord combo and almost zero load on the actual fiber. another tip is to insert the duplex fiber connector into a small zip lock bag, wrapping the bag with tape and then taping to the pull cord is a method to keep the fiber connector clean. Clean from lubricant & clean from electrical tape adhesive residue. Linus washing the pulling taped connection in the sink was priceless!
Bingo on the aboves… modern fibre is nice but can still damage it.
@@CoDJumpMaster wouldn’t you just go back to the entry point and pull the string and fiber back out? Though I guess you’re still missing the pull string in the conduit at that point.
That makes me curious, what DO they do now?
And always have 3 strings in it, as backups.
With each passing day, LTT is slowly but surely becoming The Office, where Linus is obviously Michael Scott. AND I LOVE EVERY SECOND OF IT.
Yeah, him messing with Jake at the beginning of the cable pull through the under-sink conduit and Jake saying "I just did this yesterday, you're screwing with me" totally had Oscar vs. Michael vibes 😂
Given the many years of Linus dropping things and other wacky events, someone could easily redo the Office intro.
Yep
I NEED a channel superfun series in the theme of the office. I think it would be incredible.
I don't know how I didn't see this, being a huge fan of the office, but you're right.
Hell yeah BiDi! I'm a fiber engineer for a small ISP in north Idaho and 99% of the time single mode is the way to go. Plus some of the more recent BiDi modules are awesome for performance and are incredibly cost effective.
If both ends of the duplex fiber are unplugged, just point a flashlight at one of them and you will know which is which at the other end because it will light up. Note, do NOT look directly into the end just in case it is still plugged in. Point it at the wall or something.
Just a quick remark... The pointing at a wall or piece of paper only works with multimode. Singemode wavelengths are not visible to the human eye.
"Flashlight". They are probably referring to the fact that your ultraviolet is invisible
@@tutacat yes of course with a flashlight you can look at it directly if you are sure its the right fiber. I get the point.
We use laser lights over here
@@naspiratx If it is plugged into a switch, yes. But I'm talking about shining a visible light (not laser) at one end and seeing which other end lights up.
I work in the telecom industry, and troubleshoot networks like this every day. Awesome to see something I work with directly! We are currently deploying 400G capable equipment throughout our network and use WDM/DWDM in many cases.
Wicked ! im in telecoms as-well :)
We have the 400G fever too, alot of devices to change over.. Alot of communications with our vendors too...
Currently sitting fls... i've applied for a job where i'll be a noc technician! Hoping i get it :p
Why do you need 400G?
@@AdrianMaunder It's not for us, it's to transport traffic from all of our customers across our network to multiple data hubs. We break down the 400 into 4 100G circuits, then with a mix of path diversification measures, bundle a ton of connections under those and ship them to where they need to go, dropping into more nodes and further splitting out to their end destinations.
This was such a fun video that brought back memories. First, a few points: (1) Every electrician knows you should uncoil your cable BEFORE pulling it. My brother would unroll Romex by placing it over his arms and rolling his arms over one another (Travolta - Saturday Night Fever). This unrolled the wire without flat spots of kinks.
(2) We used Yellow 77 back in the 1970s when I pulled cable for the Bell System. It was 25 pair; huge compared to fiber, so the lubricant was critical.
Talking about multiplexors, we maintained many in the data center when phone links and dialup were the thing. I remember how useless all that old tech became when we pulled out all the old 25 pair cables and our network techs began pulling in fiber to replace them in the early 1990s. We were so impressed that all you needed to do was alter the color of the laser to change the fiber speed.
Funny how color is a wavelength just like radio waves... Same principles different mode of application...
As a transceiver engineer defining the module specs for such transceivers (and some as fast as 400Gbps), this video is so exciting to watch! Especially Linus figuring out how to link-up the BiDi without burning them 😄
FYI if you break your pull string or dont have one, you can tie part of a plastic bag to the end of twin and a shop vac on the other end. As long as the conduit is empty it will pull it through very nicely. You obviously need very light twine, then can use that to pull bigger string if needed. The vacuum is also useful to ensure you have the right conduit.
The problem is it mostly breaks when then conduit is almost full. It breaks most of the time because bad lubing and/too much tension
I have used my phone playing music to figure out which conduit was which.
Also tie the backup pull string first and "upstream" from the cables. So maybe if the cables disconnect you still have the backup pull cord to either start again or hopefully pull it a bit more easily
Subway sandwich bags work great
I even used the tape from a casette with the vacuum, then attached it to small rope, then pulling rope.
ISP employee here.. pulling cable halariously acturate. suggestions if yall are going to do more content like this. fiber coupler is called a bulkhead. 2- invest in a light power meter, and otdr. 3- muliplexing uses a mux and de-mux, basically a fiber splitter. love you guys!
Telecommunications engineer here. It's like watching an apprentice and you want to say something but you can't. I second power meter and OTDR but would add: fiber cleaner pen in SC and/or LC to remove dust particles when unlucky and 650nm laser pen for identifying your line or sometimes damage. (suggest a maximum of 30 mW to avoid burning out optic if used on a live fiber) Multiplexing specifically with single mode fiber referring to a CWDM or DWDM. love you guys getting us work :)
Linus and the team really know how to keep us entertained while they figure out their internet upgrade
Yeah.. also that is the reason i watch ltt even though they are tech channel 😊.. thumbs up fo u 👍
Rather, they've figured out how to monetize mundane back-of-house network ops
@@dnxtbillgates nothing wrong with that.
If it didn't go a bit wrong, it might not be as interesting.
Great to see something that I work with on a day to day basis, we use SM fibre to run 100gb between sites but can push up to 400gb on one single duplex connection.
Multiple Tbit/s thanks to WDM... 400G-ZR+ rocks 🎉
@MegaCyklops first ZR+ comment and I love it. 800 and 1.6 tb comming
Really liked this video! I'm currently studying for the comptia net+ exam, so seeing you guys do networking vids is cool to watch. Reading about something in a textbook and then seeing it in action/ practice gives a certain tangibility to everything. Please do more!
All my childhood I heard my dad, electrician, talking about pulling cables. Today thanks to Linus and Jake I've learned how it actually works, feels like something got complete in me
Achivement unlocked: Forgotten knowledge "cable pullin' be that easy eh?"
You had fiber cables that long ago?
@@yuussee fibre cables aren't the only cables you pull 😂 he was meaning pulling cables in general
I can guarantee that your dad had far more difficult cable pulls than Jake and Linus.
I heard they use a mouse to pull a cable. The mouse grabs onto the cable and pulls.
Fun tip. Whip out your cellphone next time and plug one end in and on the unplugged end just point it at your phone camera. You will see the light from the fiber that you need to use.
They probably have fiber tester lights that are like 10 bucks that will be 100x brighter lol. But yea that does work if you forget it in your van!!
Yup! I cringed when Jake plugged-in the second transceiver before Linus verified which side of the pair was lit vs dark.
Phone was already in-hand, it would have taken 5 seconds
As a fibre engineer in the UK, I absolutely LOVE when they talk fibre - Also I massively approve on back roping the pull cord (it seems obvious but it is missed more than you think) 😎 Linus and/or Jake, have you ever explored splicing fibres before?
I backroped the same duct 3 times and ended up being the same person who had to pull 3 cables on different events.
Always backrope
What do you do when there is no pull cord ?
@@MrultiPaul you get a cobra and start roddin the duct with such ferocity that to someone standing behind you it looks like your interfering with yourself in a ditch
@@Babihrse I can confirm this is extremely accurate 😂
You either blow a string through (which is tough with a cable already in the conduit) or suck one through with a vacuum. We used to tie a grocery back to the string and blow it through with an air compressor. You’d be surprised how many fps it will move
This is part of what my current job does. We have set up similar wireless receivers that could reach 25 miles with similar speeds; however, this was done on a building about 12 stories high and mounted on its flag pole. Multi-channel fiber is always the best path. Some job sites have underground tunnels connecting multiple buildings to add more connections in the future. I cannot wait for an intelligent switch that uses all fiber connectors and manages each input.
I am shocked nothing was made of that level like what we have for ethernet. Like, seriously. And the military has had fiber for longer than us and they are on the forefront of this.
Wow, this upgrade is mind-blowing! Going from 1 gigabit to 25 gigabit is a game-changer.
1gbts?
@@pepeshki 1gbps
I just went from FTTN to FTTP and in the process 25Mbps to 250Mbps. That kinda increase always is.
@@TheDemocrab This year I went from 20Mbps over LTE to 1Gbps over fiber. It's a mindblowing change, but tbh I rarely exceed 600Mbps since there is not much services which need more. However, downloading from Steam is a whole new experience
I've had 1gigbit internet for 3 years now
I will be sharing this video with my coworkers (we all do private networking/fiber buildouts as desk engineers). Many of them have not yet made it to the field so physical size of fiber wiring, constructability on properly pulling fiber/cables thru conduits, and understanding how to properly debug fiber connections "I don't have light - Roll the fiber! - I GOT IT!" is lost on them since they don't get to the field much (budget constraints on projects, some PMs don't see need to setup field visits for simple projects). I love videos with this content, but I love your explanation of these ideas even more. These are great educational tools for engineers, field crews, and technicians alike.
I love the 3 stages of Linus:
1) "Everything is working"
2) "I lied, nothing is working"
3) "Wait, it wasn't working since some time? Then i lied again, everything is working (as intended)"
Jake knowing where the conduit is and not telling linus was classic
You could perform an IPerf/JPerf test to check connectivity and bandwidth which could get you quite decent results.(If i'm not mistaken, it does have the ability to perform a test with this bandwidth).
just remember to always use the -b flag to limit the bandwidth, otherwise it will limit you to 1 or 10mbps.
I came to say this. Jake, you should know better. 😝
I did think the same thing, here!
There's a few reasons you'd use BiDi, leased runs like they suggest, or even within a datacenter where you're charged per core for structured cabling. If you can install half as many cores and pay half the MRC, BiDi makes a lot of sense. The optic cost is also much lower at 10G as opposed to 25G, too.
Service providers love BiDi for last mile connections as well, cutting the significantly higher outside plant costs in half.
usually Bidi is done because you just don't have enough fibers in the ground to serve everything duplex. other than the optics being much more expensive there is not really a problem with it.
Yep. It seems to have been used a lot in the past when it was less common to have 48 up to 96 core fibres.
@@kaelev8077 they're still used a lot, even in plants with 288+ count fiber. PON technologies are all BiDi, DIA with medium to small ISPs is deployed near exclusively with BiDi. WDM is the name of the game these days.
Just so anyone reading this knows in future, you can use the camera in your cell phone (cause of the IR sensor) to see which fiber is illuminated when they're plugged in, rather than play "left-hand, right hand."
I’m glad someone mentioned this
I accidentally discovered this fact 30-odd years ago as a kid playing with my parents' camcorder. I found that pointing a remote control at the camera lens and pushing a button causes the IR transmitter LED on the remote to glow blue-white in the recording.
Nowadays, cameras are still the best IR detectors.
Can you elaborate on this? I've never herad of this and I'd like to try it out.
I love that no matter how mega corp you guys become you still give us the little gems like the points at 9:01!
The pacing of this video is amazing! The interactions and silly side things with the other members of staff was fun!
If yall are doing a lot of fiber running I would recommend getting some Visual Fault Detectors. They just shine some red Light through the Fiber. And maybe also some optical power meters so you can see if the Signal actually arrives where it should
I also think that they should get an OTDR for their 700 meter fiber run.
Jumping on the “As a train” I am a technician in the US for a telecom company. I’ve learned so much from you guys over the years. On the customer end we rarely get to see how the service is actually utilized. In my experience we usually connect our equipment and we screen share via Zoom to whoever manages the IT for companies they verify the subscribed service. Later they come and do whatever they intend to do . (And we usually take the fall for them not being able to utilize their new services until they have a visit from their crew.) 😅 I often times just connect them if it’s something not too involved and in the scope of my knowledge of how it needs to be connected and so forth.
love the longer vids keep up the great work LTT :D
9:30 why is Linus wearing a Renault shirt lmao
I love infrastructure content like this. I remember how terrified I was the first time I had to work with fiber endpoints.
And Jake's pointless errand was priceless. And I totally believe that Linus would waste Jake's time the same way.
Don't forget, none of this was wasted. It's all content.
I never expected LTT to become a workplace comedy but I am HERE for it
I love this, It's just like Luke and Linus are kids that just got let in into the office with grownups and cool stuff and they just do their thing not caring about anything
Great synopsis of why all the actual network engineers hate these videos.
@@THETACHIchrisreading through your comments gives me huge laughs, I can’t help but think of 🤓
@@davy2753yeah, it seems he just hate-watches everyday to comment how superior he is. Not 🤓 but definitely super 😎
Totally
Jake and Linus*
Unless I'm misunderstanding. If so, then carry on! :D
What a great video. Also you really see how nice of a guy Linus is. He cares about everyone working around him. Constantly joking with them and this shouldn't be controversial, he says sorry to them. That may be his maple syrup blood though.
You see it - when he is on camera...
Don't forget that.
#lienus
As a network engineer and having delt with dark lines from ISPs, it's quote likely that LMG already had permission to use any of that 12 strand fiber since it was installed for their use. While moving to bidi is cool and does work that part might have not been needed and they could have just pulled the pair and connected it without a problem.
I am a supervisor for a fiber ISP...this video is every day of my life 😅
The difference is, it's funny when you are just goofing off to upgrade your connection for content. It's a nightmare when it's a new install and messing up means a business has no Internet at all 😂
These are my absolute favorite videos from y'all!! And I end up needing this knowledge like 4-6 years later lol. Getting into homelab now and I'm like ohhhh that is what they were worried about in that one video. And I understand the yolo mentality now, make backups and just go for it and learn along the way...
window cleaner spray works great for pulling cable. I used it all the time in my old job running cables in 991 centers. the best part is that it dries quickly enough and does not leave a mess after.
The AF60HD antenna is actually really stable, I knew from your first video you would have issues because of the height - pretty sure I mentioned it too. I have the AF60HD running steady as well as their AF60LR's, having over gigabit speeds through the air is amazing but yes fiber is king so grats on the upgrade LOL🚀
For the Linus group. When trying to work, out witch fiber is what and where it goes, you could try using a lower powered laser pen, down a cable and someone on the other end watching, text across coms locate and mark off each cable. I did similar with, muilt speaker setups with a AA battery, across the wires, the speaker that makes a noise, and job done.
They actually sell Visual Fault Locators pretty cheap, but beware of the connector type.
10:23 Linus reminds me so much of Michael Scott, "What could go wrong, What could go wrong" .... Im trusting Dwight 🤣🤣
my favourite part was Jake and Linus just yanking their cables together for several minutes.
We use MUXs in work all the time for divvying up a single fiber cable for multiple clients, very handy!
DWDM/CWDM ftw. Sadly the optics are kinda expensive. Especially the tunable ones. In the carrier segment we deploy 400G-ZR+ currently for metro and even long-haul.
@MegaCyklops Also, the E2000 connectors are pretty expensive, but an added benefit is, that they got an integrated dust cap, which prevents people from directly looking in to the fiber.
@@MegaCyklops I work in resi and commercial coax and fiber, but I've never done any cellular work before, but have been extremely curious as to how it works. Do you by chance know of any write-ups or anything that I could learn from?
@@MegaCyklops Did a project with sending 4x 10 GBps over 80 km with CWDM. All on "consumer/business" devices Amazing what technology is able to provide for normal business.
@@MrWaxYL wow 80km thats nuts!
I'm a pc enthousiast,I dont understand anything about networking at all, but I love these videos, makes me feel like you guys know I understand. Greetings from a Dutchy.😘
Only Jake and Linus can make me watch 30 minutes of someone pulling a cable.
couple tips to make fishing a bit easier, tie the new pull chord onto the old one then do 3-4 half hitches around the cable, snug them up then tape, since the new pull chord you guys used was pretty thick and the conduit was a bit small it wouldnt make that pull easier but in general if the first thing you do is tie the pull strings together you probably wont lose them. second tip is if you do a half hitch around your screwdriver or pliers you can have a nice handle to pull with, have the screwdriver in one hand and when you pull keep tension on the chord with your other hand, relieve tension on the knot and you can slide the screwdriver forward to pull more. not only is this a bit faster it'll save that string digging in your hands as you're reefing on it
I really thought the dish soap suggestion was a joke... But then jake poured it right down the pipe. Dishsoap can corrode the outer casing of any wires or fibers in the pipe. Granted this will take years to happen. So i guess we'll see. This is why you use the lube linus was talking about
My favourite type of LTT video. Enterprise tech but DIY and makes you feel like you could do this in your own home and learn something new at the same time.
Enterprise tech done wrong.
You really can the issue is you almost never really need it.
It's so nice seeing content about things that are relevant to things that I get to be hands on with everyday. OADM, Multiplexing and Fiber is such a deep rabbit hole if anyone is ever looking for a niche industry to get into
Fiber is not a niche industry.
The government is currently throwing money at people to build fiber anywhere and everywhere. Meanwhile, every datacenter connection in the past decade has been fiber. Some datacenters won't even sell a non fiber cross connect anymore.
Sadly Linus is making more videos on what not to do, as he lets Jake do everything wrong.
Yeah i agree , also an expensive industry for the tools , but clients never seem to want to pay :) .. Im in Telecoms as a fibre optic specialist .. Started my own little company .. Tools cost as much as a small house , but then people dont want to pay for the service lol ..
@@RyTrapp0 Yeah man to put it into context , the OTDR we use in south africa is EXFO ( its all that any telecom company allows ) now imagen the machine costs 20K USD and you get paid 2 USD per test lol ... and a test takes 90 seconds but sometimes you only need to test 12 other times 288 ... Clients still complain its too expensive .
I'm late to the party but it's good to have a fiber laser and power meter to test your light level and make sure you are on the correct side of the fiber. It's also always good practice to clean your fiber with either a cletop fiber cleaner or fiber cleaning pads with alcohol. A lot of the time the fiber comes a bit dirty right out of the bag.
You made me laugh so hard. I pulled 40m homefiber in my photo studio, so I have gigabit there for using the full potential of my internet. I did so many same steps (lube, another pull rope, tangling the fibers and so on)
It was so nice seeing somebody else do it while sitting in my livingroom. It took me forever. Great work guys, I’ll book you for my next project ;)
I work for Telus, and will tell you @17:37 yes a Telus tech would 100% do that.
I Installed DWDM multiplexing for a county in Iowa to do exactly as you said... save on fiber between towns, we were running 4 x 10 gig networks over 1 fiber, cool stuff, if you just want to play with a piece of equipment get a fiber optic spectrum analyzer, the one I was using was from EXFO it was awesome
Great to see the father and son bonding
always funny to see how careful they are with fiber optics, we don’t handle them that carefully at work 😅
yeah if you know how to re terminate it's like whatever if it breaks we pull more slack and put a new end on fogetaboutit
Pro tip: when pulling wire through a conduit, use COLORED electrical tape (3M 35 works great). Colored tape doesn't leave the sticky residue like black tape does.
For the _"are you using the left or the right one?"_ you can shine the phone light through the wire. Less powerful than a laser, but in theory should work for direct connection.
_I've done it with audio cables before._
They make special red light to do this. Phone lights are too scattered to be meaningful on 10 micrometer fiber.
Audio cables are 1 millimeter in width, by comparison.
...that would require experience. 😀
No matter how less janky LMG gets this can never stop!
Even if you have to create a series of videos just for upgrades like: Janky vs Pro
The actual tech tips in this video are pretty mild, but the interaction between Linus and Jake made this one of the most entertaining LTT videos I've seen in a while! Caught myself grinning like an idiot several times throughout! 😂
@LinusTechTips, The provider has a switch as their DMARC, this isn't to do traffic shapping or routing most of the time. Its to do SLA and End to end provisioning and scoping. This allows them to track things like fiber cuts between the main fiber line and your DMARC, as well as provide jitter, latency, and optical power levels. Lastly, it also depends on how the connection was provided, if its a Wave service, VPSL, EVPLS, DIA, etc.
DMARC as you've used it here is an acronym for a set of e-mail authentication requirements. What you're looking for is "demarc", short for demarcation point.
One of the primary functions of a NID is rate-shaping.....
@@THETACHIchrisdepends on service provider. Some do it in the head end
Better option and futureproofing would be a pulling a standard 32f cable (they're used by network providers and are cheap) then splicing couple of fibers. I was surprised you didnt send a red light and test the signal with OTDR. Moreover guys, you can get a fibre port cleaning kits and show people how easy it is to clean it.
i like tha Jake seems like a random fun guys helping, but he actually knows everything in the building, server and internet wise
Seriously informative!
Pretty much all about this feels very familiar and has almost all the tips I would give.
The BiDi adapter explanation was spot on and showed all it needed to show.
The WDM rabbit hole gets very interesting, but it's tempting to dive too deep.
(but would make for a cool video, if you ever get a 3rd building...)
I *always* unroll fibers in advance, it takes you a few minutes to do properly and saves, well, hours.
(not that I didnt learn that the hard way)
Visual Fault Locators are useful for showing *which* of the fibers is in use (and are pretty cheap).
The white cap on the other end should light up (a little) or shine the connector on a piece of paper.
Fiber Cleaners are useful, just in case you touch something with the end of the connector (or a mote of dust gets in there).
For thinner conduit, you can use the same BiDi trick with a simplex (single strand) fiber, so you halve the connector size.
OpenSpeedtest is available as a docker image for your server(or firewall) and allows you to check fiber throughput and reliability over a longer period of time.
I've just gone down the CWDM rabbit hole, upgrading a link between 2 sites that had 2 diverse duplex links. We're going to the FS 9CH per simplex CWDM, giving us 36 links instead of 4. Great as we have multiple networks that must remain separate due to the systems running, it's fun using a mix of 10/40G optics, some decent inter-site capability.
@@zeealpal Dest of luck! Fortunately, it sounds like you have 4 circuits, so you can probably keep 3 up while you insert a MUX on each side. You prepate it *very well* and test every link in advance (LLDP is magic for this), you do it with the least amount of sphincter-tightening per change. *ENJOY* the absolute speed and adventure you will get out of this!
I love that even when in the middle of a super-important process that could absolutely wreck the compnay if it's done wrong, Linus & Jake still bicker like an old married couple. I love it XD
"I want to get away from jank" Linus 2023
Fun video and mostly very accurate. However, for watchers in a similar situation. if you plan to be in the location for more than a few years, pay someone to run, terminate and test an armored 24-stand SMF (Single Mode) with LC UPC connectors (similar to isp) from the MPOE to the other building's server room and be done with it. I suggest using UPC (blue ends) in all situations, APC (green ends) is not very common and is really used for things like ultra-high RF frequencies, and long haul WDM, DWDM, etc.
Tip for you, to ascertain which fibre is which, get a cheap LED torch and shine it down Fibre link, the person at other end can look at his fibre ends and see red light, so he/she knows which is the fibre you are both gonna use. Not so bad if you only have 2 as you have a 50% chance, but if you are using Multi core, then this is best way to see.
Not sure if 'go get me a cordless wire' instruction or legitimate advice.
Aka VFL, Redlight or Ruby.
I work for an ISP and we run DWDM for our state-wide fiber ring. We're running 40 Gbps for our core links are we have dozens of customers running 100 Gbps. We are deploying new Packetlight gear so we can start upgrading our core and ring to 200 and 400 Gbps links within the next few years.
ISP-level gear is wild.
its like how F1 technology is 20 years ahead of road going cars
@@jhalkoski 100%
@@heavyq now if only I could get more than 20mb at my house 😭
@@jhalkoski I wish I could get my house on our network but we don't have fiver directly in my town yet. Hopefully soon though!
@@heavyq yeah I live far enough out of town your internet options are only the phone company or starlink. So it's just dog shit either way
This video demonstrates a mix craftmanship. People don't see the level of craftsmanship they are paying for. Thank you!
Good job editing team on those text animations/graphics at the beginning. Truly the unsung heroes
21:46 Linus, that is exactly the *OPPOSITE* of how you should pull.
You *NEVER* pull at a 90 degree angle compared to the conduit, always pull in parallel with it, never perpendicular!
At 7:55, I can't help but compare Linus' miming to something I saw in the bloopers for the Drew Carey variant of Whose Line Is It Anyway?, where Ryan does similar to the director (who he loves calling a 'British a**hole') and when the director turns Ryan's back to normal, like Linus.
I love this kind of unscripted thing.
It gives me comfort that Linus also had problems seperating fiber from the duplex clips his first time, just like I did lol.
Perfect videos on LTT, when Jake and Linus are in it, and when Alex and Linus are in it. Or even better, all three lol
This is the kind of video that made us fall in love with LTT. :) it’s just got that quality “I don’t know what.”
why is the internet 1000 times faster than mine ☠☠
They pay 1000 times more to get faster internet 😂
Oh my brain
Good job on editing their parts together. Really nicely done.
As a retired Senior Network Engineer for a major University I was ROFL my you know what off. The cringe moments were many and I decided to text some of my old colleagues to use this as a training video for the new kids on how not to handle fiber. Glad you all were fortunate enough to have it work.
30:00 keep in mind that the prices for official vendor SFPs (Cisco/Palo Alto/etc) are many times more expensive. Generally, you can at least 10x the FS prices and you get the prices that enterprises actually pay. The reason they pay for this is because they want vendor support, SLAs, etc.
Keep in mind that most of ''official'' SFP come with a better QC and with self-diagnostic feature who ''compatible'' ones don't have. Earlier with 1 or 10 Gbits official or compatible doesn't really matter and I sell an used more compatible than official without issue. Now on 25/40/100 Gbits link, we got A LOT MORE issue with compatible SFP than before and there no magic to it.
For sure official SFP are almost 10x prices and this 10x isn't entirely justified but in fact, for the past 2 years I was force to replace compatible for official for many of our customer, and for short link (25/40 DAOC 1meter) and for long ones. (40Gb ER4 from FS are crap)
I’m about 95% successful with FS transceivers 10gb single mode LR. I have had no issues with multi mode SFP+s. But most of my enterprise customers buy real Cisco gear. On the other hand, they get huge discounts from Cisco such that it’s not the same 10x cost.
@@Bill_N_ATX yes Cisco can go to 85% discount on big order... so public price are not really relevant. As for your previous statement , yes almost no issue with 1 or’10 gigs fs sfp. Issue come on 25/40/100 gigs ones
As someone that job was setting them up for AT&T, that last box is to limit your internet. All of those cables have 10G of capacity that is than limited down to how
Much you pay for
Good to know. I work in school IT support. All of our schools have a Cienna switch installed. I always assumed it was just the hand off from their network over to us.
Does anyone "in the know" try to circumvent that?
@@SchnitzelDaemonmy first thoughts, too! I remember first DSL days were similar... and if you worked out the Telco password, you could just tell your modem to run the full 256kbps instead of the 28k you were paying for!
How much do you want to know? So one of those boxes is a hand off from the company that owns all the underground infrastructure to your service provider for all of California that is AT&T it doesn’t matter who you get internet from it is AT&T. You can circumvent the restrictions but you need to be in the business.
If I remember right, in addition to using different wavelengths of lights, the light can also be bounced off of the cable at different angles. This means that one cable can replace dozens or even hundreds of individual fiber optic cables.
Carriers are using own equipment for multiple purposes. Yes, I've encountered ISP using switch at client office for traffic shaping purposes (saves resources on their core), but it also simplifies link quality monitoring. Also, they can do any reconfiguration (like VLAN tags) without asking client to do the same.
Its called NIDs. There are multiple MEF standards on them. They allow rate-shaping, handoff of multiple services, QoS, SLA monitoring, etc. on site without sending a technician.
They also sell the programmer tool to let you reprogram the SFP to a specific brand in case the switch doesnt recognize it.
I used to do commercial VOIP and digital phone installs so this type of video is very entertaining. Yall did pretty good for dudes that don't do this every day. Nice job.
I was only going to watch a bit of this to see what they were planning, but it was so entertaining that I watched the whole thing! It really warms my heart to know that my projects aren't so different from theirs. I feel MUCH more professional now.😁
17:30 "Oh my god this leaks" was really funny to me for some reason
13:30 Linus shall not be fiddling with the fiber when Jake's end is plugged in. Even though cap is on, it's very easy to accidentaly point it into your eye when plugging into to SFP, especially when you are holding it right in front of your face. You should be doing it either making sure your eyes are safe OR having power turned of (ie. sfp unplugged from power)
I am *very* surprised they were allowed to change the optics in the ISPs demarc.
Not unreasonable the provider just "gives" them the SFP port on the provided switch and put that into the contract as their demarc point, anything beyond that including the SFP module being the customers' responsibility.
If I remember correctly the ISP is more of a friend basis.
30 years in IT and its great to see content like this and how folks can quickly grasp these concepts, while I wouldn't hire you guys, your videos and outcomes are fit for purpose.
The ego on you bud.
@@mateo02211 I know right?
If it comes apart mid pull you can get a new string it with a vacuum and a plastic bag.
I love how Jake always thinks Linus is straight up lying to him even when he's not