Network Admin Life - Chasing Down Fiber Problems 

So making the assumption the other end of the fiber is also transmitting at around -1.44 dBm, you can account about a 0.3dB loss for every connection the light passes through, so with the patch panel in between that's 4 connections (2 SFPs and 2 bulk heads at the patch panel) / ~ 1.2 dB expected loss, and your receive power is at -2.77 dBm, so overall you're only seeing a loss of 1.33 dB which is pretty close to expected! Something I would do in this situation as I go through each rack is have a fiber click cleaner with me and just clean all the optical faces while I'm there, just to eliminate the chance a piece of dust might be part of the problem.

Please continue to mention God 😊

Could be a rubbish SFP the amount of times I got called.out for a failing SFP.

KEEP talking about God! 😀Thanks for another great video!

I am a great fan of documentation. when working with fibre cleanliness is next to godliness. the clicker is your friend. I am not in any way religious, but you are free to go on as much as you like about it, it's your video and your channel. if vibration is a problem, or even a suspected problem, you can get the rubber isolation mounts for the racks, that will reduce or completely remove any vibration issues.

DON’T stop talking about Jesus! ❤ 😊

Scott you may want to invest in a visual fault locator so you can at least verify what is connected to what..

Great video, good Sir! I love the "labeling cables" approach. I immediately added that to my mental kitbag for when I land a networking gig. Keep those golden nuggets of knowledge coming! Take care, everyone!

Great video and please keep talking about God, I love that part !!

You are doing a great job. Especially you speaking in the name of the Lord… God bless you. I was having not a good day, I saw you working, and worshiping, that gave me strength, because is JESUS, our main source… 🙏🔥

Wow, I learned a new phrase, our devices are co-located with HVAC, sometimes XMAS storage and mops. You are the best!

Maybe before you walk away try your fiber loopback to see if port on your basement sw is working, if you dont have one , they are cheap on amazon and it will make you look even smarter. I bought one of each so I have a total kit. (I'm FE so I never know what I will run into) I once solved a VXLan with leaf and spine architecture in a massive 7 full cabinet storage system at 2am. The engineers might not have been impressed but I impressed myself. I feel smart just saying those above phrases. In addition there are no MAC addresses on the above systems. Each of the 48 sw ports is fiber channel with layer 3. Each port acts like a router (limited) The heat these systems give off is incredible. So cool, sorry I am reliving past events, now back to you.

Its wonderful to hear, you mention God, thank you.

Have you thought of getting some LR sfp instead of using SR sfp? Would be better for distance

God bless you, too.

I miss bare metal

Thanks. I enjoyed this video. I don't like troubleshooting layer 1 issues. I'll take BGP any day.

So first of all I would teach myself to never look directly in a fiber, at short distances you won't notice anything, but when working with longer distances that can be bad for your eyes :) If you have really long fibers an OTDR meter would also be of great help, what it does is sent light over the cable and if it find like a break or something it will tell you at what length the break is so you know where to look :)

God Bless 🙏

Hey! Grace & Peace 2 U brother! Thanks 4 another great troubleshooting video!! I always love it when we get tours of the racks, even when there's an issue I'm always learning from your expertise! Thank 4 al that U do for us and the fun things you share! God Bless and have a great day!