Questions tagged [cable]

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

Networking cables are networking hardware used to connect one network device to other network devices or to connect two or more computers to share printers, scanners etc. Different types of network cables, such as coaxial cable, optical fiber cable, and twisted pair cables, are used depending on the network's physical layer, topology, and size. The devices can be separated by a few meters (e.g. via Ethernet) or nearly unlimited distances (e.g. via the interconnections of the Internet).

There are several technologies used for network connections. Patch cables are used for short distances in offices and wiring closets. Electrical connections using twisted pair or coaxial cable are used within a building. Optical fiber cable is used for long distances or for applications requiring high bandwidth or electrical isolation. Many installations use structured cabling practices to improve reliability and maintainability. In some home and industrial applications power lines are used as network cabling.

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stp vs utp whats the exact reason for using stp

the wiki article says that twisting the wires protects them from external electromagnetic interference. But then why would you need to go for shielded twisted pair wiring ? Anyway the twist in the wires provide the sheilding.
user68350
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T1 versus Cable Modem

We've been using T1's for years and never changed the connection to a faster Cable Modem. I am concerned about support, return to service. I cannot find in legalese Cable vs T1's FCC Regulations SLA's. I'm very interested in what the current…
user58345
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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 suppose there's nothing I can do to try and get…
NPE
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Groupings for Network Cable Colors

I noticed a thread Network cable color conventions? that talked about what types of colors to use for cabling in server rooms and closets. I thought that if there was a general consensus as to the best set of functional cabling groups (i.e. see…
user51905
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Network wiring template for Visio

Anyone come across a good template/symbol pack for Visio for doing network wiring, patching, switch topologies, etc.? Everything in Visio for networking is 3D, and isn't really conducive to cabling.
gravyface
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MRJ-21 Patch Panel System

I was reading about the MRJ-41 Patch Panel system here, but not sure I entirely understand it. It looks like it allows me to wire my own patch panels because it it uses a special cable to attach the patch panels together (so I don't need an…
Kyle Brandt
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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 clients, 2 phones, WAP and 2 printers. I also have a…
Bob
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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 which the cat 6 cable passes where there are…
yeahman
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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 cross-connects are unusable for a modern network.…
miken32
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Lightning/surge risk of Ethernet cable run inside an exterior wall

In a previous question, I had planned a Cat6 (Ethernet) cable run outside a home, adjacent to a coax run. I was advised against it, and I'm interested in taking that advice. Now I'm considering running the cable inside an exterior wall. (I mean…
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Long cat5e cable

Cabling contractors put wires according to plan however I think the distance is longer than 100 meters as I cannot see devices connected on another end. When the cat5e cable is longer than 100 meters, will I still see lights on the port that is…
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Cabling for SAS drives in a Dell T420 with Perc H710

After having purchased a Dell T420 with SATA drives and without RAID, and discovering this was a mistake for performance reasons, I'm obtaining a Perc H710 PCI card and SAS drives. Now I'm stuck with a dumb question: what kind of cables are needed…
mhucka
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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 end of the cable is terminated in a wall-jack (in…
Jon Tackabury
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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 go from SFF-8087 to 4 x SATA. I know I cant…
AlexW
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Robust RJ45 for frequent connections/disconnections

I am looking for robust RJ45 cables/connectors in an environment where people come and go and plug in and out. After a month of usage, the connectors are worn out and fall out and you need to replace the cable. I want to not do it so often - what…
Konrads
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