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(The Inquirer)   Let's all wish a happy 40th birthday to everybody's favorite twisted pair   (theinquirer.net) divider line 69
    More: Cool, Ethernet, Institute of Electrical, optical fiber cable, LAN, Electrical and Electronics, mother boards, pairs, coaxes  
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13740 clicks; posted to Main » on 24 May 2013 at 10:08 AM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-05-24 11:47:51 AM  

Ivo Shandor: Did you also hear a lot about mouse balls?


Oh, yeah, I had a couple of people swear to me that the proper maintenance and cleaning of mouse balls thing was real. Good times.
 
2013-05-24 12:10:08 PM  

TheGreatGazoo: Tommy Moo: theurge14: [i.imgur.com image 500x500]

Token wheel? I don't get it.

I saw the headline and thought "Hm... Wasn't the Watson/Crick thing more than 40 years ago?"

Token Ring.  Always fun when the token gets lost.

I worked at a company that had thinlan ethernet.  They had a terminator come loose in a control room in a factory, and it took down the LAN in the factory and then it jumped over the wan and took down the corporate office LAN.


See, you probably mean that as in the end of a cable connection came loose, which caused a chain loss of internet access to a company, but when I read this sentence I picture a T101 getting loose in a factory and shooting everyone up.
 
2013-05-24 12:12:43 PM  
I once went to a place to help troubleshoot some network issues, and found that as a cost-cutting measure, they had pairs of machines using the same CAT5e cable, one using the green/orange, the other using blue/brown.  They were technically terminated to the correct pins for FE, and the switch end they were the same way, using the upper and lower ports in the same column.  The onsite 'tech' had suggested it, and the owner of the site realized at my wincing that this was wrong on several levels.

End result was a prescription for a new spool of cable and new, fully independent cables cut and crimped.  He got out lucky as the patch panels were at least punched down with full CAT5e by a private contractor before they moved in.  I think the tech lost his job, or came damned close.
 
2013-05-24 12:41:29 PM  
Is this where we get to share horror/funny stories as well?
Had a user that demanded that he and his 2 coworkers were put side-by-side on the switch so they could share data faster. After all, it was a token ring network and he didn't want his data to have to travel all the way around the whole network where other people might see it.
 
2013-05-24 12:48:48 PM  
Imagine my disappointment
 
2013-05-24 12:50:51 PM  

Saberus Terras: I once went to a place to help troubleshoot some network issues, and found that as a cost-cutting measure, they had pairs of machines using the same CAT5e cable, one using the green/orange, the other using blue/brown.  They were technically terminated to the correct pins for FE, and the switch end they were the same way, using the upper and lower ports in the same column.  The onsite 'tech' had suggested it, and the owner of the site realized at my wincing that this was wrong on several levels.

End result was a prescription for a new spool of cable and new, fully independent cables cut and crimped.  He got out lucky as the patch panels were at least punched down with full CAT5e by a private contractor before they moved in.  I think the tech lost his job, or came damned close.


Eh, it works as long as you're running 10mbps, it's when you start getting faster that you have problems on long runs.  Of course, it won't do gigabit at all.

I've actually done it before when I needed additional drops and it would have been too hard to run more wire.  Back then switches were expensive, a couple of repunches was cheap.  But I did warn the client about its limitations when I did it.  No, I wouldn't do it today, switches are cheap now.

The ugliest thing I've done was when I put in a couple of switches as media converters when it was going to be too hard to pull cat5 to replace a very old thinnet line.
 
2013-05-24 12:55:17 PM  

DammitIForgotMyLogin: nekom: It wasn't always twisted pairs.  I remember working with ethernet using BNC connectors and coax wire.

Aah, 10BASE5 and vampire taps. Those weren't the days.


On the flip side, all it takes is one media converter and thicknet can talk to your 10/100/1000 switch with 10Gbps uplinks.
 
2013-05-24 12:58:57 PM  

Gaseous Anomaly: My first network was token ring. Worked great until one day the token fell out and got lost.


The Hobbit has it,


Ohh TOKEN ring
 
2013-05-24 01:15:37 PM  
As someone who had a twisted pair, I really getting a kick out of this....
 
2013-05-24 01:19:30 PM  
I was one of a small group of Navy personnel stationed overseas on an Air Force facility ('90) - As was typical at the time you had everything from '50's technology that you pretty much had to make a part if something failed, to bleeding edge - and everything in between. I knew just enough about the newer stuff to be dangerous, certainly no 'expert'.

Anyways, I'd been there maybe a month when the Air Force techs and civilian contractors came over to tell us a major system was going to be down for at least two or three days:  a couple computers had died on the token ring. They'd removed them and sent them off; then discovered they'd run out of terminators, so we'd just have to wait for the replacement computers to arrive. I looked at them kinda funny, and asked why they didn't just hang a couple Network cards off the T-connectors until they came in... Their eyes got real big and they took off.... system was up in 10 minutes.

Got a nice letter and access to an admin account for the Navy equipment (after a quick semi-test and walk-through) shortly thereafter.
 
2013-05-24 02:20:20 PM  

DarkVader: Saberus Terras: I once went to a place to help troubleshoot some network issues, and found that as a cost-cutting measure, they had pairs of machines using the same CAT5e cable, one using the green/orange, the other using blue/brown.  They were technically terminated to the correct pins for FE, and the switch end they were the same way, using the upper and lower ports in the same column.  The onsite 'tech' had suggested it, and the owner of the site realized at my wincing that this was wrong on several levels.

End result was a prescription for a new spool of cable and new, fully independent cables cut and crimped.  He got out lucky as the patch panels were at least punched down with full CAT5e by a private contractor before they moved in.  I think the tech lost his job, or came damned close.

Eh, it works as long as you're running 10mbps, it's when you start getting faster that you have problems on long runs.  Of course, it won't do gigabit at all.

I've actually done it before when I needed additional drops and it would have been too hard to run more wire.  Back then switches were expensive, a couple of repunches was cheap.  But I did warn the client about its limitations when I did it.  No, I wouldn't do it today, switches are cheap now.

The ugliest thing I've done was when I put in a couple of switches as media converters when it was going to be too hard to pull cat5 to replace a very old thinnet line.


Oof. The cheap bastard that did this also had the cable untwisted about six inches back on the PC ends so that they would reach.  Total waste of time, and since both pairs were fully unwound it took some fancy work to re-twist them a bit by separating the two colors and swinging the plug between them without breaking the damn things, they were baked by the heat from the back of the dust-choked PCs.  I'm seriously glad I offered only to take a look and advise, instead of flat-out offering to fix it.  I didn't want to inherit any issues from that office.
 
TWX
2013-05-24 02:31:27 PM  

Ivo Shandor: nekom: It wasn't always twisted pairs. I remember working with ethernet using BNC connectors and coax wire.

And you won't find many twisted pairs once you go past 1Gbps. That's all optical fibre or copper Twinax.


Actually, Cat6a reaches 10G and might reach 40G, and they're still working on standards for high-speed copper.

If we ever re-do the computer rooms at work I intend to advocate for 6a or Class-F. Latency is lower without the optical conversion process and it's much easier to make repairs, even if the standard 110-punch is replaced with something else.

/would be sweet to run 50-pair cables between each of the racks, with color-coded jacks for which rack is served by a given group of jacks.
 
2013-05-24 03:39:01 PM  
Twisted pair? Testicular torsion is no laughing matter, folks!
 
2013-05-24 05:20:13 PM  
I met Robert Metcalfe at a conference in the bay area in 1993 or 94.  He's impulsive with his pronouncements and predictions, occasionally forecasting wacky things.  At the time, he came across as something of a right wing-nut.
 
2013-05-24 05:23:39 PM  
...what's a little conflation of layer 1 and layer 2 among friends?  i still cracked up at the headline, and still want to buy smitty a beer.
 
2013-05-24 05:28:10 PM  
i276.photobucket.com
 
2013-05-24 06:05:54 PM  
Ethernet for the first two decades was deployed widely in LANs, competing and winning against Token Ring networks and various other more exotic and costly technologies. What Ethernet had going for it was the relatively low cost of network interface cards (NICs) and switching equipment, as well as the fact that its adaptive data link protocol that tolerated ad hoc LAN segment configuration

i.l.cnn.net
 
2013-05-24 06:35:00 PM  

TheGreatGazoo: Token Ring.  Always fun when the token gets lost.

I worked at a company that had thinlan ethernet.  They had a terminator come loose in a control room in a factory, and it took down the LAN in the factory and then it jumped over the wan and took down the corporate office LAN.


I brought down the campus network my first day in the IT department because no one mentioned terminators. It took them hours to figure out what happened. Good times.
 
2013-05-24 07:08:15 PM  

The Beatings Will Continue Until Morale Improves: Back in MY DAYYY they had token ring. And sometimes the token would fall out and you would have to search for it on the floor...


One place I worked was basically just an open loft. The token ring cable mostly travelled along the floor between desks. People were forever kicking it and knocking the tokens out. I guess at the time it was pretty freaking amazing technology for everyone to put up with the nightmare of maintaining that goddamn cable.
 
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