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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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Is there a reliable VOIP setup?

I'm in Tasmania, Australia. We are about to get our second fibre cable lit up. Up till now, latency & reliability have been major issues in the take-up of VOIP. Considering this, can you recommend a VOIP setup for small to medium business' (1-50…
Gareth
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Gigabit switches

We currently in our office have a 20 Mbps fiber optic internet connection with Time Warner. We decided to upgrade our connection to 100Mbps. When the technicians came out, they upgraded the circuit and tested it on their device, but it didn't work…
Peter Lange
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Can PRI be ran along side browser/VPN data on a Fiber Line?

Our business is looking to have a fiber line installed in place of our current set up of 3 T1 lines and a DSL line. Before I can eliminate all of the T1 lines, I need to know if the PRI, that I have running on it's own T1 for our phone system, can…
Joe JMC IT
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Fiber Channel adapter statistics Linux

Anyone know how to get Fiber Channel adapter performance statistics out of Linux? I.E throughput.
awojo
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Pulling Fiber Optic Cable

Someone who has a lot of experience with fiber optic cable told me that somehow the cable needs to be pushed through conduits rather than pulled like I would with a Cat 6. Is this true? If so, what is the best way to push the cable through?
Timothy R. Butler
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OM1 and OM3 Fiber Questions

We are looking to install OM3 fiber to get a through put of 10 gig throughout our facility. I am looking at a chart and it states that the OM3 (50/125) which I am guessing is multi-mode fiber can produce 10 gig @ 300 meters (SR) and 1 Gig @ 550…
wes cronin
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Is 1000 Base SX fiber multimode (850nm) backwards compatible with 100 Base Sx fiber multimode (850nm)?

Is 1000 Base SX fiber multimode (850nm) interface backwards compatible with 100 Base Sx fiber multimode (850nm) interface?
Tomaso
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What type of fiber do I need for a WS-G5484

I have bought two WS-2948G switches from cisco for a lab. I now need to buy two additional modules for them WS-G5484. I've never worked with fiber so I was wondering if there are differences in fiber cables and what type of fiber cable I should use…
Lucas Kauffman
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Trunk fiber ports on switches

We are planning to purchase new switches for our network. We have three buildings in the same area that are all connected by fiber. Our main building is very large and needs to be connected by fiber from north to south. North is where our core…
skinneejoe
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Network not working properly - 3 computers working, 3 not working - what could it be?

So I've got this setup ... Fiber cable broadband connection -> Media Converter -> Switch (8 ports) -> PCs The network does not have DHCP, all settings are manual. 3 computers can connect to the Internet (all Windows XPs, with any IP I throw at…
Alexandru Nedelcu
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What fiber should I run between 2 floors in a company site?

I'm helping a customer in moving his company to a new building. There we'll have two racks on two different floors to accomodate various servers and switch infrastructure. We'all also use the opportunity to migrate the last remaining 100mbits…
Luke404
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1Gigabit vs 1.25Gibabit mismatch

I need to re-connect the network to a small old outbuilding that hasn't been used in several years. I have to use the existing 62.5um multi-mode fiber run. This end of the fiber is already connected. For the end in the building, I was looking at…
Joel Coel
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Roughly cutting Fibre Cables

I recently asked a question about which type of Fibre optic cable to use for my installation. We have now found a cable type and supplier and I'm about to order the cable (OM3, Tight Buffered, 12 Core), however I have a further question: We are…
Bryan
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Upgrade Fiber Optics from 100Base-FX to 1000Base-SX

We currently have two HP Procurve 2312s connected using two 100-FX-SC transceivers. I am looking to upgrade to new managed Cisco Catalyst switches that use 1000Base-SX transceivers, will the same cabling I have now work or what will I need to…
Byron Wilcox
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Unable to establish link between Mikrotik router and Mellanox NIC

I am trying to establish a 25 GbE link between Mikrotik CCR2004-1G-12S+2XS router and a server running Windows Server 2022 with Mellanox NIC (MCX512A-ADAT). For cabling, I tried using the official Mikrotik DAC (XS+DA0003), unofficial FS.com with one…
Vilican
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