Mark Minasi's Tech Forum
Sign up Calendar Latest Topics
 
 
 


Reply
  Author   Comment  
spam spam bacon spam

Avatar / Picture

New Friend (or an Old Friend who Built a New Account)
Registered:
Posts: 83
Reply with quote  #1 
Truth be told, I can't guarantee that Sherwin the Geat* himself, actually did all of this...
When I learned that Sherwin was a CONTRACTOR.... as in "advertises himself as an entity that does this professionally", I also learned that Sherwin had "guys" that worked for him. (!)

So, this could be one of his guys' handiwork.  

*at first a typo, but upon reflection, I determined it was so much more apropos.

Let me introduce you to the cabling for the cubicles. 
  IMAG3114.jpg

What you're looking at:
This is shielded ("screened") twisted pair.  The copper "fuzz" that's sticking out of the blue jacketing like chest hair out of a t-shirt is a woven mesh of fine copper wire.  That helps protect the little twisted pairs inside from some types of interference.

But it doesn't do diddly when it's done like this.  [eek] 

Shielded cable needs special metal 8P8C "RJ45" connectors, special wall jacks, etc.
When you crimp the special connector on, you need to ensure the mesh shielding is situated correctly, so that it's making contact with the connector.

There's more to it, but the worst thing is.... this is wrong even for regular UTP!!!
To attach a connector correctly, the jacketing of the cable should go into the connector, and get crimped, along with the twisted pairs.  The twisted pairs should not be "straightened out" like they are here. 

Apparently, Sherwin said "the cable is too big and doesn't fit in the connector, so that's all I could do."

Argh.


WIN_20200518_16_36_29_Pro.jpg Has anyone seen this "level of quality" in a commercial building?

Apparently, "they" tested each run by browsing to Google using a laptop and were able to access it, so "they" think it's fine.

I don't have any equipment to test the cabling, so I have no idea how bad or how decent these links actually are.
(*taking donations of any cable install/test equipment you might not use anymore... lol)

Have you ever seen similar types of cabling and it worked fine? 
I'm curious to learn what kinds of cabling fails actually cause problems and which ones don't really matter as far as the users & network is concerned.

cheers!

~spammyster


__________________
If at first you don't succeed, destroy all evidence that you tried.

0
cj_berlin

Avatar / Picture

Senior Member
Registered:
Posts: 431
Reply with quote  #2 
Well, in this country, if you even think about crimping an RJ-45 connector onto an infrastructure cable, you're off the site immediately. I've seen this done by some weekend cablers but not professionally.

Testing equipment has to be certified (in this country: annually) so there are rental services for that, about $100 a day.

__________________
Evgenij Smirnov

MVP Cloud & Datacenter Management
My personal blog (German): http://www.it-pro-berlin.de/
My stuff on PSGallery: https://www.powershellgallery.com/profiles/it-pro-berlin.de/
0
wobble_wobble

Avatar / Picture

Associate Troublemaker Apprentice
Registered:
Posts: 940
Reply with quote  #3 
These a wee bit old, as I appear to be moving further away from even having a screwdriver.
Hope you enjoy and realise that Sherwin is just the next evolution.

Factory, they made pipes, smoking pipes.
Upgraded from Sage Line ancient (CLI with some colours) to Sage something worse and the latency sucked bad, real bad, terrible.
Eventually got all issues bar one with the manufacturing manager PC.
We had paced where we thought the cable went, 45 maybe 50 meters.
But packets were dropped, a lot...

Eventually we put a cable tracer on the cable and it was 63M one direction and 25M the other direction.
WTF 
We followed the cable and found this beauty cable tied to electrical conduit powering the 2000 flouresent tubes and high arc illum lights for the craftsmen.
Cableing had been done by what they thought was a reputable company!

cablejoin1.jpg 

That only took 6 weeks to find.

The next we shall call suspension of technical disbelief.
Expensive deployment. dark fibre, additional 200M of Cat 6 Fire Grade cable on the bill.
Monitoring showed flapping on the network.
Not expected actions on the site...got in my car and drove to the site.

All was revealed in two phases.
Notice the well placed is the nicely suspended media convertor, well known hardy kit.
The missing 250M of fire grade Cat6 doing a damn important job.
The Backup NAS well positioned for high speed removal.

bottompic.jpg 

But my favourite "WiFi Switch" it "needed to be in the air to work"
middle.jpg 


Edited spelling



__________________
Have you tried turning it off and walking away? The next person can fix it!

New to the forum? Read this
0
spam spam bacon spam

Avatar / Picture

New Friend (or an Old Friend who Built a New Account)
Registered:
Posts: 83
Reply with quote  #4 
Quote:
Originally Posted by wobble_wobble

Eventually we put a cable tracer on the cable and it was 63M one direction and 25M the other direction.
WTF 
We followed the cable and found this beauty cable tied to electrical conduit powering the 2000 flouresent tubes and high arc illum lights for the craftsmen.
Cableing had been done by what they thought was a reputable company!



O.

M.

F. 

G.


You win.  ROFL.
ROFLMFAO!!!!!!!

I'm SPEECHLESS.  (Speechless.  me.  it's twoo... it's twoo! [said in my best imitation of 'Madeline Kahn's reaction at the end of Blazing Saddles']


In the first picture, what's the white thing?  I'm thinking it's like a punchblock, maybe?

That's BAD.

I worked one place that I had to quit - I've related some stories already about them - but when I first started there, the IT guy took me on a tour and showed me, among other curiosities, his method of installing wireless in the building.

Your pic reminds me of what I saw...

High up on an I-beam, he had zip-tied an access point and power strip to the beam.  The AP was plugged in to the power strip and lord knows where the power strip pulled it's power from...
He showed me, and with pride in his voice, detailed how nice and neat the cables were.

Of course, the 3 APs were autonomous; different brands, different protocols, spewing 3 different SSIDs.
(He was a "Linux-head" and feared Windows.   The closest he'd get to Windows was WINE.)
So he had each guy in the shop "decide which AP they wanted to connect to" and he gave them the key for that one.  They weren't allowed to access the other two.

The funny part (as if there's only one) was, he had Win Server 2000* virtualized, because the industry software needed it.  So everyone had a logon and password.  You didn't need to remember it though, because he ran a batch file that logged you in every time you booted... and everyone's password was "password".

(*maybe it was 2003... I don't remember... but I DO remember having to bring in one of Mark's books to show him something, and I remember [VIVIDLY] saying "This book is for server 200x; it's the oldest book I have - I don't have anything for older versions.")  



I don't know if you remember, but there was an email that went around some years back about my working at a place that my "boss" wanted ME (hah!!!!)  to put in an Exchange Server, because he'd heard you could have a calendar.... seems the big boss was upset that people were always on vacation and he never knew when they were coming or going... (I'd happen to mention in a meeting that since my boss Anthony was leaving for vacation on Thursday for 2 weeks, perhaps his idea of building a server from PARTS and then moving all the corporate data over and then leaving the next day for vacation was not really leaving room for any burn in, testing etc.... and might it be better to wait until he got back?

The big boss loses it, because apparently the whole "Anthony won't be here for 1/2 a month" was news to him.... lol.)

So Anthony calls a meeting with me (5 mins before I'm to leave), and we went in to an empty office.  He brought.... a pen and a stack of post-it notes.  OMG.  I'm having PTSD.  I can SEE him sitting there, across from me, with his pen in one hand, and his other hand curled around the chunk of post-it notes, as if to steady it before some gun shot rang out and he'd begin to feverishly scribble.... well.... notes.

I had to explain to him that configuring and managing typical Windows Active Directory servers was not simple, but many people become decent at it.  I then said that there are other Windows servers, like SharePoint, that are even harder to config and maintain, and many server admin shy away from those, and rightly so.  I then said, "However, there are admin who JUST handle Exchange servers... and to know what you're doing, you gotta be a special kind of crazy.  Not just crazy, but like waaaaaaaaaay crazy."

The server pieces sat in their boxes while Anthony vacationed.

I grabbed a calendar from the stack of jillions the boss had printed as freebie giveaways, and hung it behind what's her face's desk, where everyone could write their vacation time in and have it initialed for approval.  An Exchange server probably would've burned that place down.

Wow.
What a trip down nightmare lane!!!

~spammyster




__________________
If at first you don't succeed, destroy all evidence that you tried.

0
wobble_wobble

Avatar / Picture

Associate Troublemaker Apprentice
Registered:
Posts: 940
Reply with quote  #5 
Its electrical strip connector
https://ie.farnell.com/hylec/hyks-02412pp/terminal-block-barrier-12pos-12awg/dp/2056626?gclid=CjwKCAjwt-L2BRA_EiwAacX32eLueIqGYiFHBFPoRmPZA2s66_s0XoTIJSLz-26s_HVqWvCoNzlg6hoCbaIQAvD_BwE&gross_price=true&mckv=sK2Gc2dSn_dc|pcrid|436005051839|plid||kword||match||slid||product|2056626|pgrid|100894919266|ptaid|pla-900848850454|&CMP=KNC-GIE-SHOPPING-CONNECTORS-NEWSTRUCTURE-17MAY

For 230V (110V for you wousese) power, OK for places you don't mind dropping a few milliamps/ skin effect but netwroking, HA.




__________________
Have you tried turning it off and walking away? The next person can fix it!

New to the forum? Read this
0
Mafervus

Grumpy Old Men
Registered:
Posts: 41
Reply with quote  #6 
Did Sherwin work in the Midwest? There are several larger firms that use that style of cabling. I had a similar issue as Joe, except in my case a HVAC contractor installing new duct work accidentally clipped a network cable, but instead of notifying us, he stripped back about six inches t=on each side and then used wire nuts to repair the break!
__________________
The problem with troubleshooting is that trouble shoots back. ~Author Unknown
0
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.