Questions tagged [cabling]
For questions about network cable installations used in a physical building or as used in a computer network topology. This tag is suitable when your question is about network cable installations, that are used in buildings to distribution frames and data centers or long distance cabling that is buried into the ground.
174
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What is the correct way to diagram a Patch Panel?
I am creating a network diagram for my local LAN. I would like to include a patch panel diagramming what physical location (office) each port goes to, as well as the devices in that office. I have ...
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1
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What is the difference between RJ45 connection standards WE/SS and TE-AMP and when and where are they used?
I recently decided to run some CAT6 cabling and wanted to ensure that my Crimpmaster RJ45 die would work fine for the CAT6A shielded connectors. I noticed that several people had trouble using the ...
- 143
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Does TIA/EIA-568 permit patch cabling totals longer than 10m?
[Light edits to emphasise versions]
What are the exact requirements of TIA/EIA 568 cabling standard as regards to the length of patch/work area cables?
Specifically, I see from my 2001 copy ANSI/TIA/...
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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 ...
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CAT6 cable AWG23 seems too thick for plugs [closed]
I have 500 feet of what is described as Cat6 Solid STP Copper Bulk Cable (White)
Here are the full specs
CAT6 STP 8-Conductor, Bulk, PVC Jacket, (FTP) Shiedled AWG23,
Solid-Bare Copper,(UL/ETL)
...
- 143
4
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1
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216
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Why token ring uses a physical star?
Initially, I thought that the reason token ring uses a physical star topology is to make up for the shortcomings of a physical ring. That is: In a ring, when a failure occurs at any point, the system ...
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Ethernet keystone jack color conventions?
In a similar vein as this question...
Are there any conventions or standards that recommend a color scheme for the colors of Ethernet keystone jacks?
- 141
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4
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Difference between LR and ZR 10Gb Optics
What is the difference between a 10Gb LR optic that can only go 10km compared to a ZR optic that can go a lot further at 70km?
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Are LC-UPC connectors compatible with LC-PC?
I’ve come across various articles online that explain the differences between APC and UPC, where the former has an angled polish and the latter is a straight “cut”.
Some of them explain that UPC and ...
- 147
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Cat6 FTP shielding
I received a edexcel patch panel for a cat6 ftp cable, I was puzzled by the diagram. It shows I should cut away the foil. I am used to pulling the foil back and placing it under the bar clamp.
Is it ...
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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.
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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 ...
- 133
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1
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What devices are used to boost a UTP copper ethernet signal?
The signal at source is tolerable at a peak of 6 mb/s, but from the server room to other network switches in other buildings, figure a distance of say a football field, it's terrible. You can barely ...
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What is the maximum distance for blowing optical cable through pipes?
What is the maximum distance for blowing optical fiber cable with compressed air through pipes?
The method known also as Cable jetting.
Taking into consideration no lubricant is used.
I am asking ...
- 546
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1
answer
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Best Practice for Connecting 3 Switches to Router
I am wondering the best way to connect 3 switches to a router in a server rack.
The router is a Cisco RV320 (Dual Gigabit with two static IPs) There is three 48-port Ubiquiti EdgeSwitches, A Datto ...
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420
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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 ...
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To shield between patch panel and switch or not?
All network cables run from the outlets to the server room. They run next to power cables so it was decided to shield them. In the server room, they are going to be connected to a patch panel which ...
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2
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157
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Intermittently loose communication with upstream managed switch
I have a network for a small company that has been running without an issue for a few years. We have Cisco IP phones on VLAN 100 and computers on VLAN 1. The VLANS are auto assigned by the Cisco ...
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1
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How to ground STP cable? [closed]
I just happened to buy a lot of CAT6a STP cable and shielded CAT6a RJ45 keystone modules for wall outlets. I understand it was completely unnecessary to buy this kind of stuff, but it is too late...
...
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Cable management for a small LAN with a 24 port patch panel
I have a 24-port gigabit switch, a couple of 1U horizontal cable management bars and a 24-port patch panel in a rack. I've made a clip-art version of my present setup below:
The gray thing in the ...
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0
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112
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What is the real standard behind the "Rule of 6" for running network cabling next to power? [closed]
Something I picked up years ago at a previous employer is the "Rule of 6":
When running data lines in parallel with power for a distance of at least six feet, the data should be at least six inches ...
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3
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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 ...
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2
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Will OM4 Fiber Work with my 1GbE Fiber Transceiver?
What is the fastest cabling that can be used to connect the transceiver that Meraki calls the 1GbE SFP SX Fiber Transceiver?
Source: meraki.cisco.com/products/switches/accessories
I'm trying to ...
- 123
2
votes
2
answers
166
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Terminating Cat5 for Voice
Is there a reason to punch down all four pairs of a cable on a 66 or 110 block if I'm only going to have one twisted pair connected on the other side?
(I hope this is the right site for this).
- 123
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2
answers
130
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Effect of large amount of bare ethernet pairs on network performance
I have a client who has been experiencing a significant amount of performance issues in regards to their telemarketing floor. On my initial assessment, I found that where the ethernet is punched down, ...
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4
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Does coaxial cable transfer data both ways?
Does coaxial cable transfer data both ways although it has 1 wire in it?
How coaxial cable is different from Ethernet cables?
And why does Ethernet cables have two wires for transmit and two wires ...
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3
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Why does a copper cable with higher frequency signals attract more attenuation?
Looking at this article here by Techopedia, The writer notes that the higher the frequency of a signal in copper cabling, the higher the attenuation across the cable. Why is this the case?
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How to extend CAT6 ethernet 2m from ceiling down to server rack?
Previously, we had a 6RU comms cabinet near the ceiling.
We've now replaced this with a full-depth server rack sitting on the ground.
The plan was to remove the old patch panel, and punch it down ...
- 161
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1
answer
159
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How to verify CAT type?
There are so many twisted pair cables around, which are claiming to be a certain class/category, e.g. CAT6.
How can verify the CAT type number?
Cutting them is maybe not the most practical solution.
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2
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Advice on Patch Panels
We are thinking of getting a switch for our data center that blows air from the ports to the power plugs. However, we use a hot-aisle and cold-aisle layout. Our other switches blow in the opposite ...
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4
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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 ...
- 121
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votes
2
answers
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SFP GBIC and OS rating
I am confused about SFP transceiver choice, and compatibility with single mode fiber based on the fiber's OS rating.
My only question is, when choosing an SFP is it necessary to consider the OS ...
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1
answer
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Do physical wire properties impact the choice between T568A & T568B?
Trying figure out the key differences between T568A and T568B wiring, if any exist.
I found claims in a thread that T568A has advantages over T568B due to the fact that each twisted-pair in a cat5/...
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2
votes
1
answer
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Is the RJ45 boot part of the RJ45 design specification?
Like tabs vs spaces, or Pokémon vs Digimon, the RJ45 boot is arguably a cause of controversy for many. Is it, however, in the official design specification for the RJ45 connector, or is it a non-...
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2
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Fiber minimum bend radius for 12-fiber breakout cable
Minimum fiber bend radius is generally 10 x outer diameter of cable, unless specified differently by the manufacturer.
For a tight-buffered indoor fiber breakout cable with 8 or 12 fiber strands, does ...
- 223
2
votes
2
answers
133
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LC dual pair converter to 10GBASE-T
If using dual pair LC fiber to run 10GbE over a long distance, what's the best way to connect it to a server on one end which has a 10GBASE-T port?
On the other end there's a switch with 10G SFP+ ...
- 123
2
votes
1
answer
141
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Is the patch/crossover type of cable really unimportant in a GBe network on a structured cabling with a passive switch panel?
As known, the Ethernet standard from the GBe range also prescribes the auto-detection of the cable type (in the sense of it is crossover or ordinary cable), thus there is no really need to use ...
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2
votes
1
answer
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Reliable transfer but unreliable auto-negotiation?
I have two servers, the first with a built-in and add-on 10gbit port, and the second with built-in gbit and add-on 10gbit (Syba AQC107), communicating through a feed-through rated for gigabit ...
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votes
1
answer
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How many 3 dB couplers are needed to construct a 16 way fiber optic splitter?
Wikipedia says we need 31 couplers. Can't we do it with 8 couplers?
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2
votes
2
answers
767
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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 ...
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1
answer
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How to patch fiber connection from secured to unsecured ports
I need to patch a fiber connection from a red secured (keyed) wall port to an unsecured (not-keyed) media converter. It is LC to LC Multimode Duplex. Who sells a secured to unsecured patch cable? Will ...
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2
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Selling on a Network remodel
I am here hoping you guys might be able to give me some information I can take to my owner and get the entire building rewired. We are an old school (built in 66) that has been converted to a ...
2
votes
1
answer
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Network Cable Installation SOP
I'm looking to write out an SOP for a network installation project involving WAP installs back-hauling to existing telecom rooms/racks. It needs to be standards based, and I've found plenty of info ...
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1
answer
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PoE-safe Cable Tester
We use a lot of midspan PoE injectors here, rather than PoE switching1, and I recently burned out my third cable tester in the last 2 years by accidentally plugging into a line with an active injector....
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1
answer
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Normally Closed Emergency Power Off UPS Wiring
We currently have a bunch of Tripp Lite UPS that we’re preparing to deploy emergency power off capabilities to throughout our network. I have been provided Normally Closed tail circuits to connect to ...
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1
answer
463
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Stacking Dell N3000 with and without stacking cable (distance)
First question here. I have a new scenario that I am not sure on how to achieve.
I have a stack of two Dell N3024 switches (our core stack), that I need to add two more units to. However, these two ...
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2
votes
1
answer
153
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Are most Cat. 6 RJ45 plugs really Cat. 6 certified?
I've seen all sorts of RJ45 crimp plugs advertised for use with Cat. 6 cable. I know Cat. 6 has more stringent requirements on the cable than Cat. 5 or 5e. It seems like there would similarly be more ...
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votes
4
answers
763
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Splitting WAP PoE connection for IP phone and laptop
I am not sure if this is the correct community, please let me know if I got it wrong. I am new to PoE. I've inherited a network where in one office there is a PoE wireless access point. This device is ...
- 23
2
votes
1
answer
173
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T-568A/B on the same cable
I'm helping my friend punch down all of the Cat5-e cable in his office. Some of it went to existing patch panel and some went directly into a switch. There are two patch panels, each was about half ...
- 21
2
votes
2
answers
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110 Block Frames and TIA-606-B
I have a large industrial work site with numerous Switch- and Control-Rooms containing horizontal and vertical patch panels, switches, etc. There has historically been no formal identification or ...
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