Questions tagged [fiber]

Fiber optic data transmission, cabling, connectors, interfaces. Questions should have this tag if they directly involve fiber optic transmission of data, fiber optic cabling and/or connectors, or interface devices directly attached to fiber optic cable.

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30 views

Can I connect 2 PCs via FC HBAs without a switch?

So, I have some leftover Fibre Channel HBAs (Emulex LPE12002) and now I wonder if I can connect 2 computers with them, without the need for a FC Switch (since I don't have one, and I doubt a regular ...
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14 views

FTTH: Better to connect to internal SFP transceiver or to external ONT?

Technically speaking, what are the plus & minuses choosing a FTTH connection to a SFP-transceiver-equipped modem/router vs an external ONT, in turn connected to a modem/router through Ethernet ...
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51 views

What ISP know about my local network when I use their ONU?

I have FTTP (Fibre to the Premises) and a GPON ONU given to me by my ISP. I know they can see hostnames and MAC of devices connected in ONU. If I connect my personal router to this ONU and then ...
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31 views

Fiber Speed Drop RV320

Not sure if this is the right site to ask this, but I noticed there are a number of RV320-related questions, so here goes. I have an AT&T fiber connection to my home that connects to my LAN ...
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1answer
59 views

Where does internet latency comes from?

Sorry if this was asked before. Couldn't find anything about it on SE. So the distance from San Francisco to Australia is about 8,000 km. This source indicates that the latency among the two ...
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58 views

How can I (dis)prove I am operating my internet via Fiber Optics

I have been paying my ISP for a Fibre Broadband Package for 2 years, but last week I decided to switch because the speeds are getting worse(<800kbps) and its overpriced. When looking for a new ...
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1answer
237 views

My CenturyLink fiber modem is bridged - can I just get rid of it and use my Cisco ASA 5505?

I was about to go on Amazon to buy my own CenturyLink branded fiber modem (Arris C2100T) to replace the one I am renting from the ISP (Arris C3000T), but then I read here on SuperUser that I might not ...
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1answer
34 views

ONT Showing “Not Connected” When Using Media Converter to Connect the WAN interface to an Ethernet Network

I am using a media converter to connect a ZXHN F660 ONT to an Ethernet Network. The fiber mode, wavelengths, and upstream/downstream match. The WAN (GPON) interface is defined as an IPv4 interface ...
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35 views

Internet connection slows down on second router - router to router without bridge mode

I recently upgraded my fiber connection from Vodafone to 1Gbit/s down and 200Mbit/s up. Unfortunately, the new ONT gateway with integrated WLAN does not support bridge mode on any of the 4 GE ports ...
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50 views

How to find if FC-Switch using port-zoning or not Brocade FC 300

I have to replace a HBA on RedHat5.3 due to card failure. A tech guy asked me that "Check your FC-Switch Zoning Type of Port Zoning or not? , because if host accessed by WWNN, you'll need to update ...
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82 views

Troubleshoot connection with packet loss

I've been having packet loss issues while playing online, so I've decided to do the PingPlotter test to the game IP. The hop 4 seems to have a massive packet loss problem, but that's the ISP server ...
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27 views

How does optical media converter provide administration web interface

I've been recently playing with the web administration of an optical media converter (Huawei HG8010) I have from my ISP and I wondered how does the web administration work. By that I mean how does ...
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64 views

Does duplex patch fiber optic cable (LC-LC) need termination box/splicing?

The duplex fiber optic cable (LC-LC) I am talking about looks like this I am trying to run an outdoor cable about 120m and was informed that I need to have splicing and a termination box. But based ...
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264 views

Changing a Fiber Internet Modem?

For Example, if for some Reasons, I must change a Fiber Internet Modem. Would be a Media Converter (Fiber to Ethernet) and an Ethernet Router, a good Choice to set up a basic Internet Connection ? ...
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259 views

openWRT and VDSL speed increase

I have a FTTC tecnology to connect my home to internet. I use a modem with openWRT as OS (Linux) and I was wondering if there are some parameters to set the speed of my dsl connection to 30 Mbs.
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34 views

Remote fibre connections

I'm wondering if it is possible to utilise a single fibre connection's bandwidth from two geographic locations. Site A has a 35Mb fibre connection and Site B has 1.0Mb ... long story buy we are ...
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2answers
421 views

Is there a fiber / optical extension you can buy move your FTTP point?

I want to move my BT Openreach fiber box so it's running from my UPS. Issue is the fiber cable into the building is 10 meters away from I need it to be. Is there a fiber / optical extension you can ...
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66 views

Too many paths - impact on FC performance

I heard that too many paths could result in impact of storage infrastructure performance. Can somebody please answer why? This is not regarding number of paths for a single server, but looking at ...
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56 views

Network Switch Fiber SFP to LC

We have a fiber switch (pic below) We need to run another fiber switch in another area of the building. We are going to use LC cable as is the same in the 9F port. I see there is a SFP to LC adapter....
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292 views

Intel X520-2 and SFP+ transceiver issue

I'm kind of new to networking, so please bear the long post. I wanted to set up a 10G Ethernet peer-to-peer network on the same computer (basically two SFP+ transceivers on the same NIC that are ...
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2answers
38 views

Multimode fibre and transmission distance

Noob fibre question, I suspect. A while ago while there was a trench open between my house and an outbuilding, I took the opportunity to lay a 15 metre length of armoured OM1 fibre (4 core, LC-...
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91 views

How to operate a device through fiber?

I'd like to run a webcam or a thumb drive or an external hard drive (with it's own power supply) over fiber. I thought to use the following design or also to add a switch in case I'd like to add more ...
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61 views

I am confuse to use fiber optic cable, Rj45 or current cat6 cable?

We want to do networking again, server room is on first floor connected to 25M cat6 UTP cable with ground floor DLink router modem(DSL-2750U).(I can not change this cable as it done during ...
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196 views

Some questions about T1, T3, OC-3 and OC-48

As I know T1 and T3 are optical fiber connection in USA. Is it the same in Europe and rest of the world? And what is OC-3 and OC-12? Are they fiber for users or are these for governments, NSA, etc.?
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754 views

Speed Loss Using Google Wifi and managed switch for Centurylink fiber

I replaced the Centurylink “modem/router” with Google Wi-Fi and a managed switch using the instructions on this post: https://superuser.com/a/1186991/793565 All went well, and I was able to access ...
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3answers
411 views

Trouble with fiber modem

My neighborhood just activated fiber service to the home (http://fiber.usinternet.com/ in Minneapolis), but I'm having trouble connecting downstream devices to the modem. It's a CTC Union GSW-1005MS ...
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29 views

How can I find out the load on a specific fc port via dtrace?

How can I find out the load on a specific fc port via dtrace? I need to know the speed of reading and writing + IOPS. I read a lot of documentation but did not find anything useful to this topic, I ...
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217 views

Poor Upload performance on symmetric FTTP 100/100Mbps link

I know what I'm suffering is a "first-world" problem...I have it good, but not as good as it should be. [Moving here at the suggestion of the moderator in SE Network Engineering.] tl;dr; - I have ...
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111 views

How to DIY terminate 62.5 µm Multimode Fiber (MMF)?

I wired my house using a Honeywell Genesis series multimedia cable (part no. 5956). Among four other cables, it also has (2) 62.5um multimode fibers bundled together in a cable. (Those two 62.5/125 ...
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1answer
298 views

I want to extend a Verizon Fios Ethernet connection without running long Ethernet cables throughout the house

I want a consistent Ethernet connection and do not want long Ethernet cables running throughout the house. I read about the fiber media converters, and I looked at manuals by am unsure if I have the ...
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1answer
578 views

how to build a long distance wired network [closed]

My house is 500 meters far from the outer gate, on a steep hill, and there is no straight path or line of sight between the 2 points. How would be the best way to extend the internet connection from ...
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40 views

How to find the proper EPON stick that works with my ISP?

Though my ISP has provided an ONU works really well, but I still want to replace it with a Mikrotik RB962UiGS Router which has an SFP port. Now I have everything(LOID, MAC, TR069 credentials, etc.) ...
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499 views

I wanted to move my modem but the cable from ISP is too short, how to extend? Details and picture inside

So I want to move my modem from my room to another room. The problem is the cable is too short and I don't know how to extend this cable because it's not an ethernet cable. See pictures below: This ...
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164 views

Connect to my ISP ONT

My ISP (Vodafone Italy) brings me a 1000/200 connection via the fiber. Anyhow their router sucks, crashes often, and is not able to keep up with the traffic. They use an Huawei Echolife HG8010 as ...
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3answers
54k views

How to Ditch CenturyLink Fiber “Modem”

How can I ditch the rented router CenturyLink gave me and use my own router with CenturyLink Fiber internet? Can I use routers like Orbi or Google Wifi that don't support VLAN tagging?
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1answer
612 views

Fiber to the Home (FTTH) to PC installation

My ISP installs FTTH (Fiber To The Home) like this: TP (Terminal Point) -> ONT (Optical Network Terminal) -> Router -> PC Is it possible to use this method instead? How can this be achieved? ...
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682 views

fiber optic PON cable to ethernet

I have a fiber optic internet connection that connects to Huawei EchoLife HG8247H Router via PON port, it has one public IP my question is that can I configure that router to act like a switch so that ...
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1answer
950 views

Two HG659 modem, setup

I have two identical Huawei HG659 home gateway One is working properly on fiber connection, as the house is big I would like to know if the second modem (that is not in use) can be used as repetitor ...
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1answer
35 views

Expansion of network including IP Cams and extension of UniFi products

I am in charge of a small network in very rural Guatemala. Currently it consists of 1 Poweredge server running 5 virtual machines, 1 NVR with about 26 cameras, 15 clients on a domain, databases for ...
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2answers
47 views

Inside compound / building cabling for fiber

I have a cabling challenge: we live in a compound that has a cabling room [room] to where all telecom infrastructure (copper and fiber services) arrive. That [room] is ~300 metres to our home [home]. ...
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1answer
161 views

How I am getting double internet speed? Just wondering

I was wondering, how it is possible that I am getting double speeds? I am paying for 100mbps, but sometimes I am getting over 200mbps (pic below). I have fiber cable run to my apartment, then fiber ...
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3answers
8k views

Is it possible to connect two wifi routers to same fiber modem

My house there is a one fiber broadband port and fiber modem connected to this port using fiber cable. Then Wireless router connected to the fiber modem using CAT6 cable. Now I got another Wifi router ...
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3answers
3k views

Why is a home fiber connection asymmetric?

I recently switched from an ADSL to a fiber connection and was surprised to see that the bandwidth is asymmetric (1 Gbps down / 250 Mbps up). While this is understandable in ADSL, I do not understand ...
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2answers
271 views

SFP compatibility with media converter

Maybe it is a silly question but since I am not so experienced using fiber optics I want to make sure everything is ok before ordering. I am planning to use this media converter: https://www....
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1answer
169 views

How to Setup a File Server and use it over Internet?

I want to Setup a FileServer so that i could Access/Edit my Files over Internet. I'm having Apple Airport Time Capsule of 3TB Storage filled almost 70% of Personal Files and Movies.And Im having a PC ...
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2answers
2k views

How to run a cheap house to barn fiber optic solution

My brother just moved into a barn on a largish piece of property. The property has cable running into the main house, about 400 feet from the barn, and there is already a pvc pipe running between the ...
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1answer
230 views

Simplex fiber from isp

I just got fiber, and I'm super happy! But recently I read about simplex vs duplex, and that simplex can only send data one way. And I noticed that there's actually only one fiber from my ISP, which ...
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1answer
2k views

Qlogic qla2xxx fibre channel HBA not displayed by targetcli

I'm experimenting with FC with a view to setting up a SAN but appear to be stuck at the first hurdle - I can't seem to get targetcli to give me the option of using my qla2xxx card as a target. I've ...
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98 views

Optical fiber symmetric 200mb. Less speed in download than upload OSX 10.10.2

I Have Optical fiber symmetric 200mb. The problem is I have a less speed in download than upload: Download: 50mb 100mb Upload: Wifi 100mb Ethernet 197mb. The conection is ok. I tried with ...
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912 views

Link issues with fiber card under RHEL 6.2 and hp dl380

I am having issues getting a HP ProLiant DL380p Gen8 running RHEL 2.6.32-504.el6.x86_64 to see and/or allow the use of a 10GE fiber card. I can confirm the fiber connection to the router has been ...