Questions tagged [cable]

The questions tagged that way are for the physical aspect of the cable, like length limitation, physical properties, tubing, installation, etc..

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37 views

IBM 2005-16B switch console cable

I have an IBM 2005-16B switch, and it has a male serial connector on it, and I want to use that to configure the device. I also have a usb to male serial cable, and I have recently created a null-...
6
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7answers
2k views

What is a DB 9 to 3.5mm quad plug cable used for?

While cleaning up the office today we ran across two odd looking cables still in bags. On one end is a female DB 9 connector and the other end is a 3.5mm plug with 4 contact points. The types of ...
3
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1answer
2k views

Cat 5/6 Software based cable certification

Is there any software that will certify cable using only two NIC's and software to run the test? Would a NIC be able to test a cable based on the physical internals that it's made of? I'm ...
8
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6answers
57k views

How to test cat5/cat6 cable runs, using software-only, or simple tools? [closed]

Are there any utilities or simple tools or techniques to easily test a CAT5 cable, to see how well was it installed? Cat5 is often installed by amateurs, but has been installed and "working" for ...
12
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4answers
28k views

10GbE sfp+ cross over cable required? Is there such a thing?

To preface, this is my first experience with 10GbE networking and I have encountered an issue which my research does not seem to locate a solution for... I have two servers (older DL580G5 and DL380G5)...
0
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2answers
59 views

Ethernet cable link negotiation

I just bought a SoC computer with 4 eth ports which I plan to convert into a router with Linux. I connected a CAT5 cable to both one of the eths and to my notebook, but I don't seen link on either ...
0
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2answers
1k views

gigabit cat6 cable connecting 100Mbps only (Electrical interference?)

I have a gigabit switch and I am connecting my laptop to it using a cat6 ethernet cable. The problem is it is connecting to 100Mbps only instead of 1Gbps. This is what i found : The is a zone in ...
12
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11answers
67k views

How to use a Tone Generator to trace a network cable

We have a tone generator kit for tracing network cables, but I am having trouble using it correctly. The tone generator end plugs into the network cable I am trying to trace, and then I assume I ...
17
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1answer
6k views

What kind of SATA connector is this?

My Supermicro motherboard has a "vertical S-SATA connector". The manual simply says "A vertical S-SATA connector, offers four S-SATA 3.0 connections (S-SATA 0-3)". I took a picture of it and it ...
7
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1answer
3k views

How to remove a stuck wiring Snake?

I've managed to get a Snake stuck in ribbed conduit. I managed to get about 15 feet of the snake in the tube before it stopped advancing and now I can't get it out. How can I remove it without ...
7
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1answer
32k views

Chosing the right CAT6 cable type (STP FTP UTP)

I'm doing a network rewiring project, and I'm planning on using CAT6 cable for the wiring, but I have the choice between STP, FTP or UTP cable. Some of those cables, if not most, will run close to ...
0
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0answers
109 views

What is the precise meaning of an “Ethernet Drop”

Do the words "Ethernet Drop" (without other qualifications) imply that both sides of the connection are terminated in RJ45 sockets? I am trying to interpret a document where I am unsure that work ...
4
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1answer
5k views

Difference between Cat 6a and Cat 6 plug

What's the difference between cat 6a STP and cat 6 STP plug connector? Can I use a cat 6 plug on a cat 6a wire?
5
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2answers
348 views

Hardware involved in Direct-connect (switchless) 2-node Storage Spaces Direct Cluster

For my department, I envision a two-node cluster of identical machines, running S2D. I want to use Broadcom 57416 10GBASE-T Adapters (example description), because they support RDMA and run at the ...
4
votes
3answers
12k views

Is there a standard for running audio/video over CAT5/CAT5e UTP?

I want to use CAT5e UTP cabling to carry audio and video over distances of maybe 150 feet or so. I plan to use the CAT5e cable as follows: one wire pair for a composite video signal one wire pair ...
4
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6answers
2k views

Cutting patch cables to length

I'm rewiring a rack, and would like to have the cabling cut to length to make things as tidy as possible. The suppliers of Cat5e/Cat6 cable I've found only really supply bulk cable in multiples of ...
1
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3answers
29k views

UTP cable maximum length

When I connect ten computers over a 100 meters (328ft) UTP Cat5, is the signal loss so large that it will affect my network performance? These computers perform simple office tasks, and the 100m utp ...
-2
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1answer
35 views

Wiring back-to-back ethernet sockets

I need to wire two cat 6 sockets, each in a different room, so that a switch connected to each, via patch cables, can communicate. What cabling standard should I use: 1) T-568A at both ends? 2) T-...
17
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4answers
30k views

Tracing a network cable that is already connected to the network

Some remodeling was done while I was away from work, and I'm left with several unlabeled cat5 cables that are terminated with RJ45 keystone modules. On the other end, all of the cables are terminated ...
-2
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1answer
44 views

Ethernet cable only works A to B, not reversed. Why? [closed]

A custom ethernet cable with both connectors wired as T568B only works when connecting A to B, but not reversed, i.e. when switching ends and connecting B to A. A is a Mac, B is a 1Gb TP-Link ...
4
votes
6answers
3k views

5v AC Adapter with multiple outputs?

In a couple of areas we have multiple devices that all run on 5v and have multiple adapters with standard jacks, which annoyingly require multiple sockets and cables. Does anything like an adapter ...
13
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3answers
16k views

What is the difference between pvc and plenum cabling?

I'm looking into buying a few rolls of bulk Cat6 cable to wire up a few cubicles to a test rack we have. One of the choices is PVC cable versus Plenum cable. What is the difference? Will this make ...
4
votes
4answers
349 views

Upgrade to gigabit switch made long cable stop working

We have two buildings connected by a 30m network cable with a switch on either end. Last week we upgraded some old equipment to support gigabit speeds. One of the two switches was an old 10/100 ...
0
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0answers
76 views

DHCP request on ethernet cable reconnect with Ubuntu 16.04 Server

I have Ubuntu 16.04 Server here. My Ethernet interface is configured to use DHCP via /etc/network/interfaces and also I enabled "allow-hotplug" for the interface. It works. I can boot without cable ...
-2
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1answer
87 views

300' Fiber Optic Cable not passing Data [closed]

Just installed a 350' Fiber Optic cable for a client. Customers IT company came in to install the AT&T router and said the fiber optic cable is not working. IT company installed the router with a ...
19
votes
4answers
15k views

Connecting two desktop switches with more than one cable?

I was hoping to find a way to increase bandwidth between two desktop switches I have, and I wondered if connecting them with two cables (or perhaps three) instead of just one might increase ...
0
votes
1answer
77 views

What is a 4x 10gbe QSFP-QSFP cable?

I was looking for QSFP cables on Ebay and came across a Brocade 58-0000033-01 marked as 4x 10GE even though it has one QSFP connector on each end. I don't understand what this cable is for, will it ...
-2
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2answers
16k views

Cable type for connecting two routers

What kind of cable shuold I use to connect two routers, straight or crossover?
0
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1answer
2k views

high rx and dropped errors

I connected an IXIA appliance with an ethernet interface with a span port: With ifconfig -a I see this situation: Link encap:Ethernet HWaddr 00:19:99:0b:0b:00 UP BROADCAST RUNNING PROMISC ...
0
votes
1answer
305 views

What is the type of this SATA port called? (On Dell EMC R440 - 14G Server)

I would love to know what's the name of this connector so that I could stock some cables in aftermarket. The Dell Parts for connecting the MB to the 4x Drives Backplane is called "GPPHP", yet the ...
1
vote
3answers
168 views

How to connect a Juniper EX4500 to netapp X1107A

What is the best and not expensive way to connect a Juniper EX4500 to a X1107A Chelsio PCI Netapp card? Will these do (10GBASE-SR) for both end? and then connect with fiber cable? How important is it ...
13
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5answers
75k views

Cat 6e vs Cat 6a

From what I can understand, Cat 6e does not actually exist but a number of manufacturers are selling some cable labeled as Cat 6e. Some sources say that Cat 6e is just Cat 6a but the manufacturers ...
37
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2answers
13k views

Why do cat5 cables sometimes have the fluffy fiber bit in them?

Why do cat5 cables sometimes have the fluffy fiber bit in them?
2
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2answers
54 views

Networking (complete beginner) from one floor to the next

I'm new to networking. I have designed my network for the ground floor of a building. I have a router with fibre coming in, then an L2 and L3 switch. L2 going to 6 clients while the L3 goes to 2 ...
6
votes
8answers
24k views

Effect of heat on CAT5 Ethernet Cabling

I am wondering what the heat rating is on standard CAT5 cabling or where I can check the heat rating of my cabling by using the information inscribed on the cabling? In my specific situation, I am ...
0
votes
2answers
68 views

RS232 to USB extension cable to network configuration

I'm not sure this is the correct place for this question. I have a console cable to configure network devices like switches (https://images-na.ssl-images-amazon.com/images/I/41LDstMTA5L.jpg) So, I ...
22
votes
11answers
179k views

Is there a difference between RJ-45 plugs for Cat-5e and Cat-6?

While looking around for some plugs to use for running and crimping some bulk Cat-6 cable, I noticed the online sites show RJ-45 plugs for Cat-5e and separate ones for Cat-6. Is there actually any ...
8
votes
1answer
16k views

Is crossover cable still needed? [closed]

Do I still need a crossover cable to connect two PC's directly? (NIC <-> NIC)? If not, then why was this needed in the past, and when was it used for this? Specifically, when did crossover cables ...
1
vote
1answer
765 views

SAS 3.0 cabling without a backplane - SFF-8680 vs SFF-8482

I would like to connect six HGST He10 SAS drives (model 0F27402) to a Lenovo M1215 HBA using direct cabling. I originally bought two SFF-8643 to 4*SATA breakout cables before seeing the drives as I ...
2
votes
4answers
11k views

Fiber Optic Cable not working

Basically I am having a problem with a fiber optic cable connecting 2 switches not working, hired a professional to help fix it and in the end it is still not working. I need someone to look over ...
3
votes
2answers
298 views

Does Cat5e patch cables on a Cat6 network degrade performance?

Let's suppose I have a building run on Cat6 cables. The lines are certified for Gigabit speeds. I have Gigabit switches. I am not going for 10Gbps anywhere. Now, on my patch panels, I would prefer to ...
37
votes
14answers
101k views

What is a patch panel?

What is a patch panel? How it is different from (layer 2) switch? EDIT: I think my primary question (and confusion) is this: Why don't network connections go straight to the switch? Don't we still ...
0
votes
1answer
102 views

Splitting ethernet to multiple (3+) devices (phones, PCs)

I'm currently troubleshooting an environment where there is a lot of network latency issues, all sporadic and intermittent across workstations. The network uses a mix of calls from on-site dialer and ...
0
votes
1answer
528 views

Where to plug in the power switch on a HP proliant ml330 g6 systemboard?

The cable of the Powerswitch in the case needs 2 Pins, but there are 20 Pins at the front panel connector of the Mainbaord. Where I have to plug in this Cable?
1
vote
1answer
1k views

Cable management in cabinet and between cabinets

We currently have three cabinets that over time have turned into a spider web. These racks host Servers (power an ethernet connections in the back). Network switches, Firewalls, Routers etc. (all ...
0
votes
1answer
93 views

Is there a meaning of why does the wire in a Cat6 or Cat5e cable colored differently?

like for example: does the green wire mean something in a Cat6/Cat5e cable?
0
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1answer
40 views

Why do cable propogation delays exist? [closed]

I've got a timing card which emits a pulse per second (PPS). The specs for the card state there is a delay of this PPS of approximately ~7ns for each meter of the cable, or ~200ns per 30 meter ...
10
votes
9answers
32k views

Physical difference between Cat 5 and Cat 5e cabling?

(This isn't really server-related, but it seems more appropriate here than SO or SU.) When we had this house built, we had network cabling run inside the house, or so I'm lead to believe. It's ...
0
votes
1answer
295 views

How to correctly connect SFF8643?

I plan to buy Adaptec RAID controller in my workstation. I have 8i ports with 2xSFF8643. So I need to use 2 cables SFF8643 => 4xSATA (shown on image). But I can see on image 1 additional connector (...
-1
votes
2answers
665 views

Back panel display ports on Z800, connecting to VGA monitor

I work for a charity, we've received a HP Z800 workstation. Need to connect a 15-pin VGA monitor. However the the back panel has only the following ports (as shown in the two images) connected to ...