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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24 views

Port negotiation issues, IP Radio tower

Got a ubiquity IP radio on a tower. One side of the link negotiates 1G but the other side has issues. It will negotiate 100Mb after a reboot every now and again (very random) but mainly sits at 10Mb....
2
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1answer
227 views

Can I connect HP Ultrium 1760 drive to LSI Logic SAS 3041E controller using the cable on the picture

I want to connect HP StorageWorks LTO-4 Ultrium 1760 tape drive to LSI SAS 3041E controller using the cable on the photo. The cable is advertised as 0.7M Mini SFF-8482 to SAS 29P SATA . Or an adapter ...
26
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2answers
4k views

How does the RJ45 crimping tool work?

There are plenty of videos and descriptions about how to use an RJ45 crimping tool. I've seen a few, and I have even tested a crimping tool, but I still don't understand how it does what it does. What ...
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23 views

Analyzing an ethernet cable for low negotiating speed

I'd like to find out why my cat 6a refuses to negotiate 1000 speed. I have a 15 meter long U/FTP CCS cat 6a Ethernet cable installation. I have analysed the cable with a multimeter and each strand (...
2
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0answers
34 views

Electrical compatibility of SFF-8643 for U.2 SSDs

I notice a lot of U.2 adapters on sale, seem to show what looks like a U.2 to SFF-8643 cable, or SFF-8643 PCIe connector/adapter, instead of the expected U.2 to SFF-8639 cable or SFF-8639 PCIe ...
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2answers
308 views

Is it possible to connect an Epson Receipt Printer (w/ an RJ-11 jack) to our router?

We have an Epson Receipt Printer (#TM-T88V) at our building. It has USB, serial, and RJ-11 ports (see picture). When we bought it, we wrongly assumed it had the common Ethernet (RJ-45) port on it. ...
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130 views

Must a patch panel be initially terminated in the rack?

If Cat6 Ethernet cables were terminated to a wall mounted patch panel, is there a method to move the patch panel to a rack (without having to cut them and reterminate them)? Is a patch panel coupled ...
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1answer
96 views

Ethernet Cable Broken [closed]

Hi I have a 15m ethernet cable going under my floor from the front to back of house. It has developed a fault and pins 1 & 6 are no longer connected (I've tested it). Given getting it back up or ...
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0answers
203 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-...
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2answers
687 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 ...
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 ...
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433 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 ...
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2answers
946 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 ...
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1answer
153 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-...
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1answer
321 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 ...
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4answers
895 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 ...
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132 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 ...
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1answer
106 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 ...
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1answer
6k 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 ...
-2
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1answer
94 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 ...
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1answer
493 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 ...
2
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3answers
65 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 ...
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2answers
71 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 ...
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2answers
666 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 ...
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1answer
1k 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 ...
0
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1answer
119 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
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1answer
788 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?
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1answer
2k 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 ...
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1answer
140 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?
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1answer
44 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 ...
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1answer
453 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 (...
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2answers
1k 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 ...
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0answers
176 views

Ethernet cables along with power cords in Dell Cable Management Arm

Recently I read that placing together Ethernet cables and power cords is not a good thing (many sites and good-practice articles says that). For example: http://www.techrepublic.com/blog/10-things/10-...
7
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1answer
9k 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?
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1answer
44k views

Use of unused pairs in cat5 ethernet cables? [duplicate]

Cat5 ethernet cables use only 2 pairs for Ethernet what are the other 2 pairs for ? Pin Color Function 1 White with Green +TD 2 Green -TD 3 White with Orange +...
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2answers
74 views

Tagging post cable installations

So I got a main station and 5 substations in our warehouse. I've got hired after all cable jobs are done. Now, my biggest challenge is to tag all cables, because they ran cables without marking them. ...
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1answer
348 views

Dell T7500 PERC Raid

I am looking to buy a Raid card as I can not use the motherboard Raid to achieve Raid 5 or 10 with my 4 SAS drives. I am a bit confused on how I would connect the drives to card. Do I need to ...
6
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1answer
14k views

What is th difference between F/UTP , F/FTP and FTP?

I am in the following situation :the IT department asked for a wire of type FTP. The company that is cabling the building is using F/UTP. Is it FTP? Or they need another type of cable kind of F/FTP??
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2answers
2k 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 ...
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3answers
188 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 ...
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2answers
611 views

How to Connect a Core Switch with an Edge/Client Switch using SFP+ Ports

I am not sure if this is the correct site to post this question and I am more a software type of guy that needs to get started with Networking, so please bear with me if this sounds stupid... Having ...
1
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2answers
869 views

Are all console cables pinned the same?

My workplace is getting new HP A5500 Series switches, and they include a console cable - a DB-9 Female to RJ-45 Male. I know we talked about them in college, but never actually seen one. I've heard of ...
2
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1answer
91 views

Can unjacketed cable handle gigabit speeds?

Looking at taking over management of an old network that was done in 2004. Surprisingly, for the time, it is category 6 cable. About 200 ports in each of 5 IDFs, all running PoE. But I'm worried the ...
0
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1answer
281 views

Dell cable M246M vs generic mini sas cable

Is there any difference beyond brand between a Dell M246M cable and a generic mini sas-8087 cable? Is it just branding, quality control? Or is there some difference in the actual cables or connectors? ...
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1answer
1k views

HP ProLiant DL180 Gen9 modding/cabling [closed]

I bought a HP ProLiant DL180 Gen9 server in 12LFF drives configuration. Now I'd like to put two additional 2.5" SATA drives inside the case to serve as system drives. As there isn't a default spot ...
1
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0answers
665 views

Can Cat6A connector fit to normal gigabit network switch?

Cat 6A cable is thicker than Cat6 cable. For a Cat6 cable and connector, we can plug into any network switch that has RJ45 connector even a 100Mbps network switch. Just wonder if I use Cat6A cable ...
1
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1answer
66 views

What kind of breakout cables do I need for this rackmount setup? [closed]

I am going to be building out a rack and I would like to re-use all the existing hardware for my NAS device and just put it in a rackmount case. I currently am running FreeNAS inside a Silverstone ...
0
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0answers
3k views

Ethernet cable only works in laptop, not switch

I have installed a new ethernet cable and for some reason it works just fine when connecting a laptop to it, but when plugging it into the switch at that end, no connection is established. Tried with ...
12
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4answers
2k views

Why is CAT rating not applied to switches?

I see patch panels all come rated as CAT5e, or CAT6 (and so on). I understand the difference between CAT5e and CAT6 cables, more stringent interference shielding, etc. What I don't understand is why ...
-4
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1answer
35 views

Connecting two Domain controller [closed]

SIr/madam, I am with learner license in networking 2008 window server,.what type of cable should i use to connect two domain controllers through a hub or a switch. Thank you.

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