Copper Cabling - CompTIA Network+ N10-007 Prof. Messer
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Basically everyone uses UTP. In the "real world", even discussing or thinking about STP is limited to courses like the Network+. It's good to know about it, but likely you will never see or deal with it.
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@scottalanmiller said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
Basically everyone uses UTP. In the "real world", even discussing or thinking about STP is limited to courses like the Network+. It's good to know about it, but likely you will never see or deal with it.
You say that, then there's this post by @Pete-S
@Pete-S said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
Shielded cable is better but about 25% more expensive.
From what I've seen only residential and small office installations run unshielded. Enterprise runs shielded and fiber.
But I'm more with Scott - I've never seen STP installed save one place where I ran it through a metal shop.
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@Pete-S said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
For newer cable types, like cat 7, unshielded don't exist anymore as they are all shielded.
CAT 7 is UTP. That CAT system is a designation of unshielded.
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@Pete-S said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
From what I've seen only residential and small office installations run unshielded. Enterprise runs shielded and fiber.
Never seen an enterprise run STP. Someone, somewhere does, but even in 2000 we were using fiber anytime UTP couldn't handle the interference in the enterprise. Every enterprise I've seen since 2000 was UTP for last "mile" and fiber in the long runs.
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I'm seeing a lot of shielded cable used in AP installations in new construction. The architect/engineers are requiring it and calling for 2 cables per AP. I don't feel its necessary but they won't allow any deviations from their plans.
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@brandon220 said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
I'm seeing a lot of shielded cable used in AP installations in new construction. The architect/engineers are requiring it and calling for 2 cables per AP. I don't feel its necessary but they won't allow any deviations from their plans.
I wonder if this is a UK thing? I've definitely not hear anything like that around here.
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@Dashrender No. I'm in Texas. I've had multiple different architectural firms require this in new schools and other commercial buildings. Its never on the normal data drops or for cameras, etc. Only on AP locations.
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@brandon220 said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@Dashrender No. I'm in Texas. I've had multiple different architectural firms require this in new schools and other commercial buildings. Its never on the normal data drops or for cameras, etc. Only on AP locations.
that's even more stupid! All those cables likely run through the same space.. yet somehow the APs are special? is that because they are fully expected to be POE and perhaps Texas has passed new laws surrounding usable levels of power?
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@Dashrender My opinion is that the contractors charge more for for shielded cable drops therefore the architect makes more money. Yes, they are in the same cable trays and same j-hooks. They don't require shielded patch cords though. It all comes down to money.
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@brandon220 said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@Dashrender My opinion is that the contractors charge more for for shielded cable drops therefore the architect makes more money. Yes, they are in the same cable trays and same j-hooks. They don't require shielded patch cords though. It all comes down to money.
So it's a shame.. yeah kinda figured!
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@brandon220 said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@Dashrender No. I'm in Texas. I've had multiple different architectural firms require this in new schools and other commercial buildings. Its never on the normal data drops or for cameras, etc. Only on AP locations.
Sounds like maybe one regional architect that is all screwed up?
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@Dashrender said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@brandon220 said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@Dashrender No. I'm in Texas. I've had multiple different architectural firms require this in new schools and other commercial buildings. Its never on the normal data drops or for cameras, etc. Only on AP locations.
that's even more stupid! All those cables likely run through the same space.. yet somehow the APs are special? is that because they are fully expected to be POE and perhaps Texas has passed new laws surrounding usable levels of power?
yeah, something is messed up
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@brandon220 said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@Dashrender My opinion is that the contractors charge more for for shielded cable drops therefore the architect makes more money. Yes, they are in the same cable trays and same j-hooks. They don't require shielded patch cords though. It all comes down to money.
Yup, now THAT is more of what I would expect.
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@scottalanmiller said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@Pete-S said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
From what I've seen only residential and small office installations run unshielded. Enterprise runs shielded and fiber.
Never seen an enterprise run STP. Someone, somewhere does, but even in 2000 we were using fiber anytime UTP couldn't handle the interference in the enterprise. Every enterprise I've seen since 2000 was UTP for last "mile" and fiber in the long runs.
I work with a few enterprises on a regular basis. Global 500 companies. None of them use unshielded cables.
They commonly use air blown single mode fiber anywhere you have some distance (100m) and shielded copper to the network devices. Now, this is for the campus network, not in the datacenter.
That said, it's what I've seen. But none of these companies have just a sales office.
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@scottalanmiller said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@Pete-S said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
For newer cable types, like cat 7, unshielded don't exist anymore as they are all shielded.
CAT 7 is UTP. That CAT system is a designation of unshielded.
You are mistaken Scott. Cat7 have individually shielded pairs. And usually a shield around that as well. So S/FTP (or U/FTP with just shielded pairs).
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@Pete-S You are correct, I forgot CAT7 wasn't a real thing and is de facto STP not UTP, but uses a UTP designation for marketing purposes. That's probably why the UTP council doesn't recognize the whole family of 7 and 8 branded things. It's really crappy that they gave it a fake UTP designation just to be tricky. Argh.
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@Pete-S said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@scottalanmiller said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@Pete-S said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
For newer cable types, like cat 7, unshielded don't exist anymore as they are all shielded.
CAT 7 is UTP. That CAT system is a designation of unshielded.
You are mistaken Scott. Cat7 have individually shielded pairs. And usually a shield around that as well. So S/FTP (or U/FTP with just shielded pairs).
Here I thought CAT6 was a pain to work with.
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@travisdh1 said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
Here I thought CAT6 was a pain to work with.
The shielding on CAT7 allows for longer twists, making it not as hard to work with as you might think.
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@scottalanmiller said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
@travisdh1 said in Copper Cabling - CompTIA Network+ N10-007 Prof. Messer:
Here I thought CAT6 was a pain to work with.
The shielding on CAT7 allows for longer twists, making it not as hard to work with as you might think.
The twists aren't the annoying part. Trying to line up the tiny wires just right and clip the end of the plastic spacer. With CAT7 you have to deal with 5 layers of shielding instead of a spacer, and make sure the grounding wire is connected to the ground loop. No thank you, pre-terminated cable sounds like so much less work.
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holy hell, look how huge that cable is.
Youtube Video
