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4
votes
2answers
46 views

Find a UTP cable in a live network

Is there a way to find a UTP cable in a live network, without damaging the network? The problem is we have some cables laying in the server-room from god knows where. I want to find the other end of ...
0
votes
0answers
11 views

issue with QSFP+ to 4x SFP+ cable

I have a Gigabyte MD60-SC0 motherboard which has a QSFP+ port. I need to connect this with another machine I have which has a Intel X520-SR2 NIC (with two SFP+ ports) plugged in. I also have QSFP+ to ...
1
vote
0answers
19 views

USB having periodic connection issues over <15 foot cable run - EMI or?

I hope this is an appropriate topic for this stack exchange. I have a cable run just shy of 15 feet that connects a few monitors (3) and usb 3.0 devices (a USB 3.0 hub) to one of the servers on the ...
3
votes
1answer
32 views

SFF-8087 cable and connector variations causing fault?

I recently bought a set of 6 cables to connect my LSI MegaRAID card to my Norco-4224 backplane. The connector on both ends is SFF-8087. However, when they arrived, the disks would not be detected. ...
1
vote
1answer
151 views

Using Stranded vs. Solid CAT5 in a cable tray

I'm going to be installing a switch and 40 workstations/printers in a building. All the rooms have raised floors with cable trays running in various grids and there are cable trays going between the ...
0
votes
1answer
329 views

PVC raceway/conduit for CAT5e/CAT6/CAT6A cable

This is probably a bunch of stupid questions . The scenario is of running a few (5-6) CAT cables (version undecided, depending on costs). The scenario would be something like this :- a 3G USB modem ...
0
votes
0answers
77 views

What's a 25 core network cable

While looking for different types of network cable, I came across this term called 25-core cable. You can get numerous examples putting the term '25-core cable' in any search-engine. But till date ...
0
votes
2answers
97 views

Can I use a 10G optical cable for 1G communications?

On Amazon, I see MMF optical cables advertised for 10Gbe. (See example here.) I'm looking for a 50u MMF optical cable for 1Gbe. Will the 10Gbe cables also work for 1Gbe? (The cable would be used ...
0
votes
0answers
40 views

Unsure about Adaptec 6805 included cables

I have installed the Adaptec 6805 card into my server. It came with the cables needed to connect the card directly to the SATA drives. http://www.adaptec.com/en-us/support/raid/sas_raid/sas-6805/ ...
2
votes
2answers
244 views

Identifying a CAT6 cable in a bundle

We had a contractor wire up our office with all the cables leading back to a central location. The only problem is that he didn't label anything, so we have no idea which cables go to which room. One ...
0
votes
1answer
392 views

NVIDIA Tesla K20C in Dell PowerEdge R720xd — power cables

I am trying to put an NVIDIA Tesla K20C into a Dell PowerEdge R720xd. I'm having a bit of trouble understanding the power requirements of the card. First, here is a picture of two pages of the ...
1
vote
2answers
289 views

SAN newbie: What kind of fiber cables do I need to connect to the front end ports on my EMC CX300

I have an old CX300 I'm messing with and I cant determine what kind of HBA\fiber cables I need to connect a server to the front end ports on the DPE2. The hardware reference doesn't give me any ...
2
votes
2answers
337 views

What cable do I require for SFF-8087 to SAS

I have a HP P410 and two 2.5" SAS Drives, i want to connect both those SAS drives to one port. I know the cable for the P410 is a SFF-8087 and ive seen plenty of adapters searching, but alot of them ...
1
vote
1answer
74 views

BT socket Device over Structured Cabling

Not sure if this is the right stack* site to post on but I believe cabling is a just subject. Essentially I have a Credit Card machine which is connected to a phone line via standard BT Socket. So ...
1
vote
2answers
831 views

Powervault MD circular console cable

We have two Powervault MD SAS devices, the specific model eludes me as these are remote and not accessible to me and anyone on-site doesn't have the capability to locate a service tag/serial or model ...
-1
votes
2answers
176 views

Why are serial console ports on network switches 8P8C/RJ45 sockets? [closed]

It has always seemed a bit strange to me that the console ports on networking gear are 8P8C (popularly referred to as "RJ45" even though that's not strictly applicable here) connectors and require an ...
34
votes
6answers
21k views

Why do ethernet cables have 8 wires?

This might seem a stupid question but why do Ethernet cables have 8 wires? Cat5 cables were just using 4 of the 8 wires, so only 4 are actualy 'needed'. Why not 12 or 16 wires?
-3
votes
1answer
74 views

Power Supply And Power Cable at Equinix Palo Alto? [closed]

I will be doing a server installation at the Palo Alto Equinix Data Center soon and I'm coming in from overseas so I wondering if any of you can help me out regarding power supply can power cable ...
8
votes
5answers
18k 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 ...
1
vote
2answers
336 views

Network testing tool cat6 cables [closed]

I have been trying to crimp cat6+ cables at home and been having issues. some would work fine at gig others would only go to 100mb. Is there a reasonable tester out there for verifying a cable run ...
4
votes
4answers
378 views

Converting an Ethernet Coupler to a Crossover Adapter

I want to add a crossover to my network toolbox. Aside from an actual an actual crossover cable, I like the idea of an adapter (figure 1). There are crossover adapters available online, but I’m ...
0
votes
1answer
471 views

CAT5e RJ45 splitter with CAT6 network: compatibility & performance

I need to connect 2 PCs on a single RJ45 socket on the wall. The network is wired with CAT6 cables. I have seen a few RJ45 splitters that seem to do just that, but they are all for CAT5e cables. Here ...
3
votes
4answers
386 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 ...
0
votes
1answer
422 views

How do you explain ethernet cable problems to non networking people? [closed]

We've recently been doing a large network migration in our datacenter. We've had a few cables in this start to deliver really bad pings (in excess of 500ms on a LAN) before they could be replaced. ...
65
votes
1answer
9k views

What happens when you plug two sides of a cable to a single networking device?

What is likely to happen when you plug two ends of a network cable to a single switch/router? Will this create problems on the network, or just be ignored?
0
votes
2answers
371 views

Which SAS Cable is required for to connect SAS drive to RAID controller

I have two 2.5" SAS drives which have a SFF-8482 connector. I also have an LSI 9211-8i controller card, as well as a TYAN motherboard with a SAS controller. Both of these controllers use the SFF-8087 ...
2
votes
8answers
10k views

Why would cat6 connectors not work with cat5e patch cable?

I had a naff batch of cat5 connectors (the latching mechanism didn't work) so decided to order in some cat6 connectors in preparation for the inevitable upgrade. My existing reel of for making patch ...
6
votes
2answers
419 views

Tool(s) for labeling cables with unique ID numbers

We are looking to (finally) implement a cable labeling procedure. We already have a labler. Now we need a system to maintain unique IDs not related to anything. I thought of getting a tally counter ...
1
vote
1answer
262 views

Are there corner connectors for rj45?

I cant find connectors or cables that have a turn at their end of the connector. (90 degrees) This might be trivial to some. Do they exist at all? Edit: I draw a picture for this
1
vote
1answer
186 views

Wiring up RJ45 plugs on a basic network extension

I'm trying to wire up a network in an outbuilding. Unfortunately the engineers have left me bar wires so I need to add plugs and sockets. I have a 1gbps socket in the outbuilding that connects to the ...
0
votes
1answer
173 views

Network Cable Testing Diagnostics

I've recently helped a friend wire his new office up with Ethernet cable wall sockets that all connect to a central patch panel. The issue I currently have is with testing the cable.. I receive the ...
4
votes
3answers
490 views

Cable Management

I was given the task of (re)organizing cables in one of our racks, and I have never done this before. What system/equipment do you use to organize your cables? The rack I have is 23" and has 19" ...
0
votes
3answers
237 views

Which cables are “active” in the UTP cable

I believe there are 4 cables inside the UTP cable that are "active" for data, the rest might be for activity and other stuff. I need to know which colors represent the data transfer from an UTP ? Or ...
1
vote
2answers
1k views

How can I troubleshoot APIPA (169.254.x.x) in physical network cabling?

all: We have just started using an existing Cat5e cable to run 100Base-T to a new office, but unfortunately, machines in the new office see link but receive an APIPA address (169.254.x.x). I brought ...
1
vote
2answers
1k views

Cisco 2516 Console access via RJ45 port?

I have just taken delivery of a basic Cisco lab and I would like to check the routers and switches etc. are in 'working' condition before I start playing around with them. The first hurdle is ...
11
votes
4answers
1k views

Industry Standards for Network Infrastructure Labeling

Are there any current industry standards IEEE, ISO, ANSI.... available that state how a buildings physical infrastructure should be labeled at the rack and jack and how the documentation should be ...
2
votes
1answer
116 views

What is the easiest way to attach sata cables to the backplane of a 1U super micro case?

It seems that the raid controller breakout cable thats designed for the backplane makes its incredibly difficult to cable it. The right angle bend sata cables need to bend down, making it very ...
1
vote
2answers
226 views

Using 110 Blocks and Cross Connects for Data connectivity?

I recently started a new position and upon investigation it appears all data drops from the floor first gets punched down on a 110 block, cross connected to another 110 block and then connects to a ...
3
votes
6answers
1k views

Do you really need cable management for a cabinet with just switches and patch panels?

We are about to start wiring out a building expansion and our vendor has laid out the racks in the following configuration: Option 1 1U Fiber patch panel 2U Cable Manager 2U 48 port Patch Panel 2U ...
17
votes
6answers
3k views

What else do I get with Cat 6 beyond future proofing my wiring?

We are about to put in the wiring in an expansion of our office building and the vendor is proposing we use Cat 6 cabling because it is "faster." Gigabit works fine over Cat 5e which is what our ...
1
vote
5answers
288 views

Is there a way to measure the speed after changing over from CAT 5/ CAT 5e to CAT6?

We have recently done a change in our network by using CAT 6 cabling. Now I would like to measure the speed difference when I use Cat 5 or Cat5 e and Cat 6. Is there a way to find out the same?
6
votes
1answer
601 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 tub before it stopped advancing and now I can't get it out. How can I remove it without ...
0
votes
2answers
677 views

is it possible to direct connect a client and server with 10GBASE CX4 copper cables?

Server has two 10GBASE-CX4 ports. client has 10GBASE CX4 HBA. can theybe directly connected with a CX4 cable without the need for a switch? like SAS Infiband connectors?
1
vote
1answer
176 views

hybrid cable for QSFP to CX4 convertion

here is a hybrid cable for QSFP to CX4. Will this fit SFP+ ports? Deeply confused by standards and struck in a situation with wrong hardware selection!Personally have not seen the ports/hardware and ...
4
votes
2answers
3k views

please demystify the 10Gb ethernet interfaces, cables

this really is a Dell question but tempted to ask the experts @ serverfault. choosen a Dell powerconnect 8024 10GbE switch. per the spec sheet this has 10GbaseT ports. "24x 10GBASE-T ...
3
votes
3answers
188 views

Link mode on unmanaged gigabit switches

I have two RJ45 sockets connected by an inaccessible unknown-category twisted pair cable. I plug two unmanaged gigabit switches into the sockets using Cat6 cables, and they negotiate a 100Mbps link. I ...
1
vote
1answer
357 views

i2c cable for 3ware 9650se and SuperChassis 846A-R1200B

What's the appropriate cable to support i2c (red LED drive indicator, failure) with this combination and what's the best way to order it? I see 3ware supports 846TQ but not 846A from ...
0
votes
1answer
354 views

How to build a Software-Network-Tester?

The company where I work is building special twisted pair network cables. Those cables need to be tested for function and performance (100/1000 Base-T). Since we only produce small batches of those ...
0
votes
4answers
595 views

Flat 8-conductor cables for a serial console. What are they called?

I'm looking for a specific kind of Ethernet 8-conductor data cable. I am having trouble finding them online (at CDW, Newegg) because I can't always come up with the right search terms. A search for ...
1
vote
5answers
1k views

NIC status stays at 'Network Cable Unplugged' although cable is present

I'm having a problem with a couple 10GB NICs, one in particular in Windows 7 x64 that always thinks the cable is missing. The drivers for the NIC are current, downloaded from Intel- it's settings are ...