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

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. The cables we were replacing weren't made the…
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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 mini clip. My motherboard comes with several 4…
cmaduro
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Many ARP requests in TCP dump?

I have been experiencing very slow upload speeds on my cable network lately. I ran a tcpdump and found many ARP requests. I'm not sure what process they are coming from, but could this be related to the slow upload speeds, and do these look "normal"…
chaimp
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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 following results: Master Tester (regardless of…
lethalMango
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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 am I wrong ? Thanks.
Elbow
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Managed Switch console cable?

As per a few other SF questions; I have recently purchased a D-link managed switch. It's a DES-3550. It has a serial port on the front for console access and according to the manual this uses a female DB-9 cable. That's the first thing that…
dannymcc
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difference between noise and interference?

does anyone know the diffrece between noise and interference ?
user68350
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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?
JMS77
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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 cables we do not own a hardware cable tester. The…
Martin
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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 "Flat Ethernet cable" usually gives me a bunch of…
Stefan Lasiewski
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When I plug in a network patch cable to a test notebook what would cause it to not see the link?

I plugged in my notebook via cat5e patch cable to a terminated jack (we had some consultants do the runs), I get no signal not even an indication that it is connected but has no DHCP. I try another cable and it still fails. After about 5 minutes I…
dasko
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Identifying a Belkin KVM Switch Cable

I have 2 of these cables lying around that come with the used rack that I purchased. I am trying to identify these cables and what KVM switch they connect to. Belkin KVM switch cable
Inxsible
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Iperf3 on local area network: tcp vs udp

I would like to check quality of a connection on a lan using a cable which is not easy to change neither I have hw tester. The two pcs have 'standard' windows operating systems and they are not configured a server. I have installed iperf3 on 2 pcs…
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replace APC smart signaling cable with RJ-45 to RJ-45

Is it possible to replace the APC Smart Signaling Cable PN: 940-1525A with an RJ-45 to RJ-45 cable? The cable is built as an RJ-50 to DB9, but I need to connect it to a console server that only uses RJ-45. I have pin-out diagrams that show the cable…
mcv110
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Server 10Gb connect in Switch 1Gb

I have a server that has 10Gb NIC and a switch with 1Gb SFP ports can I buy a 10Gb DAC cable at the 2 ends that will work? including the switch that is 1Gb? Or can I buy an LC-LC cable and a SFP+ connector to connect to the server and an SFP…