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Questions tagged [fiber]

Fiber (Fibre) generally refers to optical fiber, a very thin, flexible glass strand which is used for the transmission of optical signals in high performance networks.

An optical fiber is a very thin, flexible glass strand that transmits light along its axis, by the process of total internal reflection.
There are two main classes of optical fibre used in telecommunications applications, Single-mode Fiber (SMF) and Multi-mode fiber (MMF)

Multi-mode Fiber is mostly used for communication over short distances, such as within a building or on a campus. Typical multimode links have data rates of 10 Mbit/s to 10 Gbit/s over link lengths of up to 600 meters.

Single mode fiber is used for communication over very long distances. It is not so common in the datacenter environment.

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SANBOX 5602 - Having diffculty changing control from XP64 to Win10

We use a Sanbox 5602 to route fiber data from several Xyratek Raids to several PC workstations. Had used XP64 workstations in the past, now migrating to Win10. Cannot get any version of Java to work on Win10.Sanbox 5602 FW version is V7.4.0.16.0…
Dannykman
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Fiber Optic Link Signal quality issues

I am fairly new to working with fiber optic, and hoping to get some advice from someone with more experience. I have done a lot of reading online, but there is a lot of info out there, and a lot of it either doesn't relate to what I am doing, or…
user562378
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How can I check the status of a fibre interface without configuring it?

With copper Ethernet you can see if there's a physical link even when the NIC is unused, i.e. is not configured with IP. With copper, 'ethtool ens802s0f0' will tell you "Link detected: yes" or "Link detected: no." This is not true of SFP+…
mr.zog
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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…
Guilherme Schubert Medeiros
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QLogic Fiber Card not working with HYVE-Zeus Server

I have a QLogic QLE2564 Fiber Card that doesn’t seem to be working with my server. I am running windows server 2019 on a Hyve Zeus V1 with a supermicro X9DRD-LF motherboard. When installed, the card is not detected in device manager or when the…
mimo_6
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Where can I get outage updates/alerts for transoceanic cables (and other tier-1 fiber backbones)?

Is there some site that aggregates status updates from the companies that manage the transoceanic fiber cables so that I can get a world view of global internet outages that break connectivity between continents for millions of users in…
Michael Altfield
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Replace Cat5e with Fiber?

I have (2) LGS326P switches linked by one cat5e cable. I am considering replacing that cable with MM fiber but want to be sure it is worth the upgrade. Here is my setup in more detail.... House: (1) LGS326P switch 90% maxed Garage (1) LGS326P…
gable74
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How to differentiate GE, Optic and FC adapter/SFP?

I'm going through old switches laying around and find myself troubled by all the different connection types the PCI adapters and their SFP have. I found a 10GE (gigabit ethernet?) SFP that says it's a Fiber channel (Brocade 57-0000075-01) and then I…
Carobell
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Fiber OM1 to OM3 Convertor

I'm looking for a converter to convert OM1 Fiber cables to OM3 and i've searched and searched and so far i've been unable to find anything. Would anyone know where to get one of these convertors, preferably in the UK however this does not seem…
Rhys
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Dell PowerEdge r710 figuring how to test my Power Connect 6224 Fiber Ports

Hi i have been trying to figure out why i cannot view my power connect via fiber. I have connected it to my fiber card not sure what card it is at the moment but besides the point all im trying to do is get the server to detect the power connect.…
Nate
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New Fiber Installation Resulting in Slow Download Speeds

TWC 80Mbps Cisco ASA 5510 (MTU 1500) Download speeds on my Windows and Mac machines are ~200KB/sec. If I use a download manager that opens 20 concurrent connections I can hit the full 8MB/sec. I thought okay maybe it's a problem with a switch or…
Michael
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Dark Fiber in Backbone networks

Is dark fiber in backbone networks good or bad?
Zia ur Rahman
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What type of fiber patch cable to buy of OM4

I have a fiber patch panel with the installed fibers 50/125 OM4. I have bought an OM2: FO patch cord, duplex, LC to LC MM OM2 50/125 µ, 1 m Length 1m cable which works between 2 switches but not through the fiber in the wall. The diameters of the…
abel3
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300' Fiber Optic Cable not passing Data

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 short patch panel cable at the junction block and…
user473961
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ISP gave me 3 ppoe accounts for 3 dedicated IPs, what kind of router do I need?

I made an optic fiber ISP contract that included 1 dedicated IP addresses and 2 additional dedicated IP addresses, now when they gave me the 3 IPs I see I have actually 3 different ppoe accounts. Is there a reliably gigabit wired router that can…
adrianTNT
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