lol, ya... sorry, that's not entirely true.

If you did them all backwards, they'd still work. If nothing is working, you messed up worse than just having the connector wired backwards. Your switch doesn't care what color the insulators are.

Actually it is. Sure people do it, but they’re no professional.

Actually it does care. Not the color, but the offsetting twists.

But sure, ignore all category standards and rating, it’s just a wire trying to move data at 12.5 gigabaud.

Not everyone works in a datacenter.  You are like a rookie airplane mechanic trying to tell a room full of mechanical engineers that every nut on every bolt for every application needs to be safety wired.  Just stop.

So, all of your runs have a manufactured cable pointt to point with no wall jacks. All home run from device to switch?

I’m actually a EE with 30 years of experience designing and building digital communication systems. Aka networks.

Horizontal cabling to jacks. Patch cables between active equipment on each side of horizontal cabling.

Link and channel certified to category spec (it’s all cat 6a now, has been for a long time). Patch panels also adhere to eia/tia grounding and bonding specs.

This. Making cables really isn't that hard with the proper tools and a cable tester. It's just generally easier and faster to punch down into a panel or keystone. But, for things like a security camera where you typically are just going from cable straight into the device, I just put a connector on the cable and voila!

Double E explains alot.

Not all professional environments are in office buildings. I assure you, terminate on install is professionally done with both RJ45, fiber, and quadrax

Dude you come into every one of these networking threads and shit all over people because they haven't practically hired a professional structured cabling outfit to wire their fucking house. I'm sure your outfit does great work, but some guy terminating a few cables by hand isn't the end of the world. Who cares? Let the guy crimp an RJ45 on if he wants to, and explain the best way to do it, even if it's not a best practice for structured cabling.

For that matter, I've had brand new Leviton patches fail to link up and then subsequently fail a certification on a Fluke tester. Sucks, and it's rare, but it can happen. Throw in a new cable, move on.

Saying that you'd have someone "escorted out of the building" for trying to crimp an RJ45 is beyond ridiculous and makes you sound arrogant as fuck when responding to a post about someone's home wiring. Why would you want to say that about the people that work for you?

I replied to you before about working in an industrial environment (maritime) where it is more common than you would like to directly terminate a horizontal run with an RJ45. There are often pieces of automation and control equipment located in spaces and enclosures where you simply cannot install a patch panel or a surface mount box for a keystone. Sometimes the cable is routed through finger ducting in incredibly tight spaces. Ideally we have DIN rail space dedicated to terminal blocks, but we don't always get to work with a clean sheet and an empty cabinet.

I believe you said something to the effect that you would fire me for doing such a thing... That's fine. My shit works the first time and continues to work for years in a high EMI and NVH environment as it should, because direct termination into RJ45s CAN be done "properly" without the whole operation burning down. If you can use a patch panel and keystone jacks, you always should. Should you terminate an entire cable management unit's worth of patch cables yourself? Hell no and anyone who thinks you should is insane.

As another poster said, not every environment is an office environment. This is a guy's house. Just tell the guy what he did wrong and move on.

Holy fucking shit, no kidding.

For a HOME network no less.

Well that explains part of the problem, I think the newest computer we have is like 2017.  We don't move enough data to make a difference, most of our runs are under 75ft, have probably 7 though that are 150ft but these are only used as a signal cable to trigger an alarm or a small packet of data you could send in less than .2 seconds with a 9600 baud modem.  

Anything sending REALLY large amounts of data is internal to an equipment rack and we have to order specialized cables to replace them, we don't have big amount of data going in or out of the building.  Otherwise about 16 computers for internal network services and around 13 VoIP phones that are all on one T3 line shared with a couple of other things.  When part of this line fails we might as well go outside throw 1's and 0's to who we wanted to talk to......  I would rather the entire thing go to hell and give me an error than let me think I am actually sending an email to someone.

What he did wrong was crimping RJ45 ends. I thought I said that as my first post.

Ethernet?   Pre-terminated fiber.  Run 10G, 40G, 100G.......

No CDC-F OTN?  You are getting escorted off the premises by your wife.

Same here.  I have a cable tester also. (A computer, a switch and speed test.)

Pretty simple, make a cable, test it and if it doesn't work, clip the ends off and try again.

I understand why you would not want to do this at work but it has worked for me at home for a long time.

specs have been that way a long time, i reccomend you get the pass through connecters and tool, much easier to see if wires are misaligned, also, cat 6 is old standard, we are running cat 8 now and fiber in building or just plain wireless, well, was, I am about to retire next year...I use unifi for my home network

I’ve crimped RJ45’s onto hundreds of cables at work and at home. Have I messed up a few initially…sure. Have they all worked perfectly after the initial fix…yes, yes they have.

I use RJ45 keystones everywhere and they work just fine for my use. I do buy 1ft and under patch cables plus all of my fiber is pre-terminated as I don’t have the tools to terminate fiber.

My cables at home have only been working flawlessly for 14 years currently though so what do I know.

ETA: I just use CAT5E at home as anything beyond 2.5Gbe that I run is done with fiber.

30 years in the industry.   You use cheap tools, you get bad results.  Same with hardware.  I don't like to spend time terminating RJ45s, time is money.  Jack to patch pannel.  Factory patch cords is all my company will support.   But on occasion you have to terminate an RJ45.  You have to have the correct RJ for your cable.  There are two types, solid core and stranded.  Pins look like a tooth for stranded, and solid is 3 prongs off set for solid.  Use the wrong connector and get poor results.   The tool is incredibly important as well.  

I've never had issues with crimps.  Just remember Cat6 or 6a cable needs cat6 connectors (staggered electrodes).

I'm sure many others have said it as well, but the correct way to do this is to terminate into patch panel or keystone jack on both ends, and run patch cables from there to your network device. It is way easier and much less likely to have mistakes than trying to crimp RJ45s.

I couldn't even count the number of times I have had to troubleshoot problems with APs, cameras, and other network devices that the low voltage contractor decided was a good idea to crimp a stranded RJ45 on to a solid core wire and plug it straight into the device.

The problems I had with keystone jacks (new term for me) was when the eventual buyer of the multimillion dollar home had the rooms repainted or cabinets refinished. The painters would remove the wall plates, wrap the Dacora insert or entire plate with masking tape, unwrap after refinish with a harsh yank of the tag they left hanging for ease of unmasking, and remount the plate. All done with zero concern for the 45 jack, er, excuse me, "keystone".

Much hubris here. Allow common sense to prevail.

If you have to DIY, use solid core, keystone to keystone. Sometimes that isn't possible, so you'll have to tip it. It is what it is, sometimes. I've pulled cat6a throughout my house, and I avoid tipping anything like the plague, but I've done it in the house once, maybe twice. I know where the gremlins lie.

Don't buy crappy tools (or cable) if you can avoid it, like anything else. I prefer the amp crimps, klein serrated cutters, and a metal razor-based jacket stripper, when I have to get involved. Typically I never do anything outside my house unless helping a friend, but I'm not afraid of it either.

If you can test it, awesome, but most of the time, if it works the first time and you don't see switchport errors under high load testing, you're probably in the clear. Some switches can test cables for you using TDR, to some degree. Here's a quick sample from one I use at home for various infrastructure/projects.

Cable tester us a must.

Screw the buttheads who say you cant terminate cate 6e with rj45.

Take your time and pay attention to details.

I did my house and cabin with cat5e years ago and zero issues.

But I gave the right tools and I didn't go cheap on stuff.

Shit tools and components leads to shitty outcomes.