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Questions tagged [utp]

For questions about Unshielded twisted pair (UTP) cabling, where it should always be in relation to networking in general.

2
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4answers
326 views

What is the difference between Ethernet types, considering bandwidth?

Different types of Ethernet (standard Ethernet, Fast Ethernet, Gigabit Ethernet) have different speed of data transfer (10 Mbit, 100 Mbit, 1 Gbit). Why is that? On the physical layer, the speed of ...
3
votes
3answers
108 views

A reason why Ethernet has maximum cable length confuses me

The answer in this post suggests that it has two reasons. While the impedance characteristics of a transmission line become less favorable for high speed data as the line gets longer (resistance ...
18
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6answers
3k views

What is this thread-like material on this Cat6 U/UTP cable?

Does anyone know what this thread-like material to the right on the picture is? Does it have anything to do with grounding? It is a Cat6 U/UTP cable.
1
vote
1answer
108 views

What type of Cat5e cable is this?

I am a fairly new networker and today I was terminating some cable at a gas station that is being built. The network cable that had been run from the gas pumps to the wiring closet confused the crap ...
0
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2answers
148 views

How to avoid cable crosstalk?

I have 4 ADSL UTP cables. How much distance do I need to leave between cables to avoid crosstalk?
-1
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1answer
39 views

Use of UTP patch cables on a STP cabled network [duplicate]

In the walls of the building there are Cat6a FTP cables. Can we use Cat6 UTP patch cables to our switches, and maintain 1Gbs speed? Or do we need to use FTP cables all the way from switch to end ...
3
votes
2answers
202 views

How close can Ethernet cables be to power line if in parallel?

How close can unshielded CAT 5e/6/6a cables be in parallel to 110V power lines in rooms of common residential/commercial buildings before interference becomes an issue? If proximity between the two ...
4
votes
1answer
653 views

Why do we need a crossover cable for 1000BASE-T?

I'm doing course for CCNA and in one lecture teacher showed how to make a crossover cable for Gigabit Ethernet. But as I know Gigabit Ethernet uses all wires of twisted pair cable and each pair is ...
1
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2answers
58 views

Cat 5e wiring Type A incompatibility with Type B

I am not an engineer but I’m having problems with my small network in my business. I have 11 computers after 13 yrs am having major problems. My network keeps shutting down, and my dental software on ...
4
votes
3answers
164 views

Where are UTP cable speeds defined for Ethernet?

I have consulted several Network+ exam preparation books, Network+ practice exam questions, the IEEE 802.3-2015 standard, and several older TIA-568 standards. However, I'm having trouble finding a ...
0
votes
0answers
89 views

Effects of CAT6A UTP cable being terminated with a CAT6A FTP RJ45 module

The rule of thumb is to pair the cable with the same type of termination. However, the wiring in place is CAT6A UTP and the equivalent RJ45 wall modules aren't easily available so wanted to ask if ...
1
vote
2answers
101 views

What classifies as crossover cable?

The definitions I've read say that crossover cable is cabling which the receive and transmit pairs are swapped around. My question is based on the fact that beyond this, I've seen some diagrams which ...
3
votes
2answers
145 views

Which is preferred: Pulling or 'walking' cable?

I'm running some basic lines at a factory and I have basic training on punchdowns and where I am allowed to run the cable(in this case, CAT5e/6). I need to run a maximum of about 200 feet of cable. ...
1
vote
3answers
2k views

Why exactly is soldering discouraged in UTP networks?

I am aware that punch-down junction boxes and other solutions are the recommended methods for continuing an UTP cable that is too short, but you are not in control of replacing (for example, solid-...
1
vote
3answers
113 views

Are there any advantages in using optic fiber to connect a host computer to an ethernet LAN?

I saw that computer Network Interface Cards (NICs) that use fiber ports (SFP) instead of RJ-45 ports and I wonder if there would be any significant advantage in connecting the computers directly ...
10
votes
2answers
804 views

What does the naming convention for ethernet standards mean: 1000BASE-T , BASE-TX, BASE-SX, etc.? What is the meaning of the components of the name?

I understand the number in the naming convention. The number represents how many Megabits per second can the standard support. However, I do not understand the rest of the naming convention. What do "...
1
vote
3answers
483 views

10baseT and 10baseFX difference

What is the difference between 10baseT and 10baseFx are those types of cables or the boxes that are used to plug the cables?
1
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1answer
164 views

Poor bandwidth after re-coupling an Ethernet cable

As part of an experiment I cut a Cat 5e Ethernet cable in half, stripped off a small amount of insulation on each wire and attached each pair of wires together with its own alligator clip. There are ...
2
votes
1answer
2k views

When is “grounding” a concern when running Cat6a cables?

I'm educating myself on how to terminate Cat 6a cables. I've seen some articles talk about "grounding" requirements because of the "shielding" in the cables. But is grounding a concern if I'm just ...
1
vote
3answers
469 views

Can I run two separate internet connections over one Cat5e cable

I have two ISP's coming into the building. One is a T1 that is going to be used for VOIP phones. The second is high speed internet connection going to be used for internet. Each office has one cat5e ...
6
votes
1answer
127 views

Is there an IEEE recognized method for splicing Category 5e or 6 cabling?

Is there an IEEE recognized method for splicing Category 5e or 6 cabling, and maintaining the expected data rates? Such as the junction box shown in the link below. https://www.lowvoltagecables.com/...
1
vote
1answer
91 views

PoE cable defective?

Need some expert advice.. So some time ago I got water damage, my PoE switch was completely flooded. Since then, I noticed that I could not rotate my cameras anymore via Blue Iris (IP Cam soft), and ...
1
vote
1answer
157 views

Connecting a router with cat 5 cable to a cat 7 network

I have a cat 7 network but the router, switch and APs are hooked up to it using cat 5 cables. Does this reduce the advantages of a cat 7 network?
1
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3answers
100 views

Is it possible to set a 3 computers LAN using just cables?

I'm absurdly new on networking, and I just want to know if it possible to set a network with 3 computers without a router, switch; just UTP CAT5 cables (or any category)
1
vote
1answer
100 views

Will Cat6 make a difference

I have 7 rooms wired with Cat5e. I plan to attach the other end of the cables to a GigaBit switch (Netgear GS108). This leaves one port on the switch. I will attach my router to the remaining port. I ...
10
votes
3answers
5k views

What is the reason for T568A and T568B termination?

There are two types of pinouts for terminating twisted pair cable with a 8P8C (RJ45) connector: But why must one not simply align the wires serially, e.g: Green pair - Orange pair - Blue pair - ...
3
votes
4answers
2k views

Why are patch panels used (instead of connecting directly to a switch)?

For example, at work, a network is made up of 10 workstations all connected to a switch through a patch panel. From my inexperienced opinion, it is extra cost that can be avoided; however, as I do ...
3
votes
3answers
1k views

Difference between patch cable and UTP

I already searched for answer to this, but I have seen so many different answers to this.. Does patch cable mean all UTP Cat5e, Cat6 etc? Or is it something else? Thank you for any help.
1
vote
3answers
837 views

Does the 568A vs 568B standard affect the transmitting and receiving wires on the CAT-5 cable?

So I'm studying networking using the Head First Networking book. I was reading about CAT-5 cable and the RJ-45 connector. The book says that the green pair receives data and the orange pair transmits ...
1
vote
3answers
119 views

What is your experience using 3rd-Party 10Gig Media Converters with Cisco equipment?

We have just received a device with 10Gig BaseT ports (for copper cable with RJ45 endings) that needs to be connected to a Cisco Nexus 5548. This switch only has SFP+ ports and we're connecting them ...
2
votes
1answer
378 views

Flexibility of a UTP cable

Is there a metric/specification that shows flexibility/elasticity of a utp cable? I have to install a utp cable and it will have to go around some sharp corners. From what little experience I have ...
1
vote
4answers
16k views

Multiple POE over a single cable

I try to solve a problem using Power Over Ethernet technology to Power supply differents devices. I would like to avoid to buy new router and try to make it work without any expensive costs (if ...
5
votes
3answers
370 views

Direct-burial cable: fiber vs cat-5e/ cat6

Apologies if this isn't the right place for this question. I'm converting an out-building to a home office. The structure is approximately 175 feet from the house. We're digging a trench for a 240V ...
4
votes
1answer
381 views

Patch cable wiring/colors

I cut a cat5e patch cable to put a female end on the cable, but the colors for the male piece are: orange, orange/white, blue, blue/white, green, green/white, brown, brown/white. The patch cable ...
1
vote
2answers
326 views

New crimped UTP cable connects and disconnects

I was just making new short UTP cables, and I was happy that when I checked the cable through an Ethernet Cable Tester, all 8 wires were straight to each other and was perfect. When I plugged the UTP ...
3
votes
5answers
5k views

Is there a difference between using a cat 6 wall jack vs using a female-to-female connector?

I am running new cat 6 cable from my router to my office so I can get my computer hardwired instead of using WiFi. When looking at what I need to get to connect the cable to a wall plate, I'm seeing 2 ...
4
votes
3answers
574 views

Why is the 100base-TX maximum distance unchanged from the original specification on better cable?

I understand that the 100base-TX Ethernet standard is from 1995, and was originally designed for older and poorer grade CAT-5 cabling than what is now commonly available. With the introduction of the ...
2
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4answers
264 views

Is it possible to carry POTS and gigabit ethernet over the same Cat 5e/6 cable?

I know that gigabit ethernet needs to use all four pairs of wires. The idea is that POTS is such low frequency that I believe it should be possible to separate it from the gigabit signal using a ...
6
votes
1answer
141 views

Will using phone lines (RJ-11) in place of ethernet (RJ-45), in this case, be detrimental to performance?

My company has begun leasing new office space, and our modem was installed in a room without ethernet, a little ways from the router. There is a bundle of unused telephone lines (RJ-11) which run ...
-2
votes
1answer
39 views

Category-6 cable for CCTV [closed]

T568A or T568B? Which one (1, 2, or 3)? Straight-through Cross-Over Roll-Over
0
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1answer
37 views

Mixed Use Four-pair Cable

My school tried to save money, so they decide to use an installed cable for phone, CCTV, and ethernet. I used two pairs for ethernet, one for phone, and one for a CCTV camera. The phone and camera ...
1
vote
2answers
115 views

Would using a cat6 rj45 coupler strip VLAN out when connecting 2 VLAN aware devices ?

Ive got a project where i have to use some existing wiring and some new wiring as we can not run new wiring in one part of the building. At the moment my network diagram looks like this Becuase i ...
8
votes
4answers
197 views

Is ethernet a term describing just the protocol or the interfaces also?

Is ethernet describing the protocol and therefore cat5 cables became labelled ethernet cables because they are used for this protocol?
1
vote
2answers
176 views

Were any 1000BASE-TX commercial products released?

As a bit of background, around 2002 there were some articles predicting the success of then newly announced 1000BASE-TX (TIA‐854), as inevitably enjoying much more commercial success than 1000BASE-T (...
3
votes
1answer
3k views

Any problems mixing T568B Patch cords with T568A Premise wiring?

I'm going to be running some Cat5E cables to have a more organized wired computer network at home. I'm going to be terminating the premise wiring at the jacks and patch panels based on the T568A ...
2
votes
2answers
1k views

Can a UTP cable use CSMA/CD?

I know that coaxial cable can use CSMA/CD but can UTP used it also? and can you guys explain it how is it done or work? thank you so much for your answer
2
votes
3answers
7k views

How to create Ethernet cables when I cannot figure out color of cat 5e cable wires?

I'm learning how to make my own Ethernet cables (to get deep understanding of Cisco for their exams), but the cables I am getting have small wires whose colors I cannot distinguish. A person in my ...
1
vote
2answers
388 views

Only 100Base-TX full-duplex over a 25m CAT 5e cable

I have a 25m CAT 5e cable and I'm trying to connect to a router. The connection obtained is always 100Base-TX full-duplex, it never reaches 1000Base-T. What can be the problem? As long as it says it's ...
3
votes
1answer
357 views

Why Do RJ45 jacks/plugs require multiple incoming and outgoing wires to work?

I Hope I'm at the right place. I am trying to figure out why RJ45 jacks and plugs require 2 incoming wires and 2 outgoing wires to work. Why is just 1 incoming and 1 outgoing not enough? IS there a ...
3
votes
5answers
556 views

Is it possible to reliably transfer data faster than 1 Gbit/s over Cat 5e cable?

Given the requirements that a standard Cat 5e cable must live up to, is it possible to transfer data over it faster than the 1 Gbit for maximum 100 meters of cable for 1000BASE-T? My old ADSL line ...