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.
Questions tagged [fiber]
111 questions
117
votes
2 answers
Why does a gigabit/sec Internet connection via cable (coax) not offer symmetrical speeds like fiber?
In our area, we have Cox Communications (cable) which offers 1 Gbit/s down, and 30 Mbit/s up, while CenturyLink (fiber) offers 1 Gbit/s up and down.
Why does copper only 'allow' fast speeds for download, but not upload? Is this a limitation…
v15
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37
votes
3 answers
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?
user96136
30
votes
2 answers
Looking for a fiber optic "switch" or "router" for home use
The gist of my question:
What is a "fiber optic" switch called?
I.E. a layer 2 ethernet switch that uses fiber TX and RX connections and sends layer 2 network traffic between the fiber strands that are connected.
Can someone purchase a…
Shrout1
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11
votes
1 answer
Why does my fiber download speed increase when testing upload speed?
I recently switched to AT&T Gigapower 1GB fiber internet and have discovered a problem where download speeds are slow during normal use. But if I go to Speedtest.net and do a test, when it gets to the upload portion of the test, my concurrent…
Ransom
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7
votes
2 answers
How to display an array of bytes in PowerShell as a joined string of hex digits?
I am using WMI to find out what my WWN (World Wide Name) is for my port on an HBA card. I can get the WWN back but it is contained as an 8 byte array. I would like to convert this byte array into a string of 16 hex digits for easy display.
This is…
Jason
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5
votes
2 answers
Understanding Fiber Internet Setup - Using my WAN port router
My knowledge on this subject is very poor. I might not be using correct terms. Please excuse.
My current Internet Setup
ISP’s fiber cable comes to a common area in the apartment complex. There’s an ONT or something similar wherein it gets plugged.…
rajeev
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5
votes
1 answer
ISP Network Control
I just got an FTTH connection and my ISP is a local operator who has taken a franchisee from a bigger ISP. He installed an ONU device to which I connect my Wireless Router.
Now, he gave me username and password which entered in router through PPPoe…
Bhavya Gupta
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5
votes
3 answers
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 why fiber at home is asymmetric as well? It is…
WoJ
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4
votes
2 answers
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 buildings for cable.
The question is, what is the…
Carlton
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3
votes
3 answers
How to identify and use an existing fiber installation?
When my parents had their house built about 10 years ago, the wiring guy told them that he should install some fiber in the walls, saying that it would be good for future use. So there is some kind of fiber-optic cable connected to several rooms…
johnnyb10
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3
votes
1 answer
Why does auto port speed negotiation not work on SFP fiber uplinks?
I have two switches (Switch 1 and Switch 2) that are different models, but are from the same manufacturer. They have SFP ports where on Switch 1 the interface type is 1000X while on Switch 2 the SFP port interface type is 10GX. When both ports are…
Dr_Xunil
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3
votes
0 answers
Connect existing FTTP instalation to router with SFP?
My existing FTTP installation by BT is using HG8240 GPON Terminal (model H35M8240BT06) + power backup.
I would like to completely remove HG8240 and connect it directly with mikrotik over SFP (saving one hop).
Q1: Will it work or BT requires you to…
Dusan
- 31
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3
votes
1 answer
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 connect a PC to my personal router. Will they be able…
user1021515
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3
votes
1 answer
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 even need their modem at all. My whole objective…
SamAndrew81
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2
votes
1 answer
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 means it's simplex?
If I'm correct, how does that…
user348047