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Cat5e Installers

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Postby raymanuva » Thu Mar 08, 2007 12:20 pm

The cat (or domestic cat, house cat) is a small carnivorous mammal. It is valued by humans for its companionship and its ability to hunt vermin, and has been associated with humans for at least 9,500 years.[2] A skilled predator, the cat is known to hunt over 1,000 species for food. The cat is intelligent and can be trained to obey simple commands. Individual cats have also been known to learn to manipulate simple mechanisms (see cat intelligence). Cats use a variety of vocalizations and types of body language for communication, including mewing ("meow" or "miaow"), purring, hissing, growling, squeaking, chirping, clicking, and grunting.[3]
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Postby Strahd » Thu Mar 08, 2007 1:17 pm

There is no current computer networking technology that will benefit from CAT6. It's a good option if you want to be future proof but pricewise is a waste of money for 150MHz larger bandwidth which is not used anyway and 1.2dB less loss...
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Postby Get Real! » Thu Mar 08, 2007 1:25 pm

dms007 wrote:
simonwjones wrote:Cat 5 or Cat 6 its the same thing really. He wanted to know if any of you are able.


ok what is CAT?


They're computer network cable standards.
Cat = Category
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Postby dms007 » Thu Mar 08, 2007 1:34 pm

raymanuva wrote:The cat (or domestic cat, house cat) is a small carnivorous mammal. It is valued by humans for its companionship and its ability to hunt vermin, and has been associated with humans for at least 9,500 years.[2] A skilled predator, the cat is known to hunt over 1,000 species for food. The cat is intelligent and can be trained to obey simple commands. Individual cats have also been known to learn to manipulate simple mechanisms (see cat intelligence). Cats use a variety of vocalizations and types of body language for communication, including mewing ("meow" or "miaow"), purring, hissing, growling, squeaking, chirping, clicking, and grunting.[3]


i don't like cats.
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Postby raymanuva » Thu Mar 08, 2007 2:41 pm

"There is no current computer networking technology that will benefit from CAT6. "???


Strahd, what makes you so sure? i am clustering with 25 servers... i am over my limit. I wish i could go FiberOpt. CAT6 transfer rate is slightly higher than of a USB2. Gigabit HUBS are cheaper and cheaper these days... CAT5 is way "technology of yesterday"...

You can lay 150meters of CAT6 straight... no extras required. Wanna pull GIGABIT network to your GAZEEBO? no probs... :D
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Postby Strahd » Thu Mar 08, 2007 3:31 pm

raymanuva wrote:
"There is no current computer networking technology that will benefit from CAT6. "???


Strahd, what makes you so sure? i am clustering with 25 servers... i am over my limit. I wish i could go FiberOpt. CAT6 transfer rate is slightly higher than of a USB2. Gigabit HUBS are cheaper and cheaper these days... CAT5 is way "technology of yesterday"...

You can lay 150meters of CAT6 straight... no extras required. Wanna pull GIGABIT network to your GAZEEBO? no probs... :D


The only difference that you get is the 150m vs 100 of CAT5e, no matter if you cluster a million servers if you are using Ethernet you are limited to 1Gbit/s of capacity and using CAT6 instead of CAT5e will not make it any faster. Now if you were to use eg. ATM or STM well that is another story...

This is one of the most important rules in engineering you only use what you need to use. It is not correct to go around selling CAT6 when the only obvious difference is the attenuation characteristics. Use it only when you need to connect my Gazebo without a repeater.

If you want to convince me I want numbers, saying is better does not do in Telecoms, better is a countable quantity.

ps.: I am a Telecoms engineer to MSc level chartered from the IET.
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Postby raymanuva » Thu Mar 08, 2007 3:45 pm

Did i say i'd charge more for CAT6?

Below is not for you, since you are an engineer.
------------

What is the general difference between category 5e and category 6?

The general difference between category 5e and category 6 is in the transmission performance, and extension of the available bandwidth from 100 MHz for category 5e to 200 MHz for category 6. This includes better insertion loss, near end crosstalk (NEXT), return loss, and equal level far end crosstalk (ELFEXT). These improvements provide a higher signal-to-noise ratio, allowing higher reliability for current applications and higher data rates for future applications.

Will category 6 supersede category 5e?

Yes, analyst predictions and independent polls indicate that 80 to 90 percent of all new installations will be cabled with category 6. The fact that category 6 link and channel requirements are backward compatible to category 5e makes it very easy for customers to choose category 6 and supersede category 5e in their networks. Applications that worked over category 5e will work over category 6.

What does category 6 do for my current network vs. category 5e?

Because of its improved transmission performance and superior immunity from external noise, systems operating over category 6 cabling will have fewer errors vs. category 5e for current applications. This means fewer re-transmissions of lost or corrupted data packets under certain conditions, which translates into higher reliability for category 6 networks compared to category 5e networks.

When should I recommend or install category 6 vs. category 5e?

From a future proofing perspective, it is always better to install the best cabling available. This is because it is so difficult to replace cabling inside walls, in ducts under floors and other difficult places to access. The rationale is that cabling will last at least 10 years and will support at least four to five generations of equipment during that time. If future equipment running at much higher data rates requires better cabling, it will be very expensive to pull out category 5e cabling at a later time to install category 6 cabling. So why not do it for a premium of about 20 percent over category 5e on an installed basis?
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Postby Strahd » Thu Mar 08, 2007 3:50 pm

raymanuva wrote:
When should I recommend or install category 6 vs. category 5e?

From a future proofing perspective, it is always better to install the best cabling available. This is because it is so difficult to replace cabling inside walls, in ducts under floors and other difficult places to access. The rationale is that cabling will last at least 10 years and will support at least four to five generations of equipment during that time. If future equipment running at much higher data rates requires better cabling, it will be very expensive to pull out category 5e cabling at a later time to install category 6 cabling. So why not do it for a premium of about 20 percent over category 5e on an installed basis?


Strahd wrote:It's a good option if you want to be future proof...


See we are in complete agreement... :wink: [/quote]
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Postby raymanuva » Thu Mar 08, 2007 3:53 pm

Strahd, this FAQ was written in 2003! you are still installing 5e... cmon man.

"From a future proofing perspective, it is always better to install the best cabling available." <-- that was my point from the beginning.
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Postby Its Me » Mon Apr 12, 2010 8:26 am

what do these cats eat?
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