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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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0answers
9 views

Installed 70m cat6 cable with fiber! But it did not reach the maximum speed [on hold]

Installed 70m cat6 cable with fiber! But it did not reach the maximum speed, I suppose to get 300 mp”/ but i get only 100 mega bit , i spoke with the provider company they said because of the length ...
0
votes
0answers
44 views

how can one strand of single mode fiber support full duplex? [duplicate]

I cannot understand it. If single mode fiber supports only 1 beam of light in one direction at a time, how can it support full duplex using only one strand of fiber? Isn't this only possible with half ...
3
votes
3answers
79 views

Will this SFP Transceiver run over OM1?

I'm fairly new to fiber cabling. I have an OM1 cable (running 750 metres) already installed on a site that currently works fine on an old system that is being upgraded. I'm trying to find out if these ...
2
votes
4answers
227 views

Will Mode Conditioning Patch Cables help with this issue?

I have been having problems with a link flapping only when working with the AXM763 Module, but when I change 1G module it works without problems. Also there other 2 links with the same configuration ...
0
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3answers
138 views

Can Ethernet use fiber optic cables?

I am new to networking, know about Ethernet and that Ethernet cables exist to make a wired networks. I also know about fiber optic cables which have a glass like material inside and transmit light ...
0
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2answers
49 views

What type of connector is this [closed]

I visit a flat and found this type of connector, the place, in theory, is capable of having fiber optic up to 1GB, I was expecting an OTN socket something like this: Instead, I found this:
0
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1answer
57 views

What is the maximum distance that a cable/fiber optic internet connection can operate without the internet quality degrading? [closed]

I hope that this is not an ignorant or misinformed question, I am new and I'm trying to learn more about internet provision. I have read that DSL has a maximum distance of 18,000ft (or 5.5 Km) before ...
0
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2answers
87 views

HP ProCurve 2524 - CLI Command to find Fiber Transceiver's Serial Number

Is there any cli command allowing to check the serial numbers of the inserted mini-GBIC modules on a HP J4813A ProCurve Switch 2524? The show interfaces transceiver [PORT-NUMBER] command which works ...
1
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1answer
52 views

Fiber signal loss - works on Cisco 4510 but not Catalyst 9300?

We are performing major switch upgrades and moving from a collapsed core design to a proper Core, Distribution, Access design. We have a very odd problem where our fiber connections going from the ...
1
vote
2answers
62 views

Fibre connection working in TX mode only?

I have this wierd problem: I need to connect two sites linked with a 4-couple multimode cable. At both end I installed HP Aruba 2530-8 switches with J4858D GBIC adapters. The situation I'm now ...
0
votes
1answer
57 views

Can an Ethernet port with an SFP handle a PPP/fiber line?

AT&T put in a 150 Mbps fiber line at our business (not my home). They claim it uses the PPP protocol (I am told this is non-Ethernet), but is terminated in multi-mode fiber using 1000BASE SX (an ...
0
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1answer
33 views

Fiber optic cable juniper ex4500

Noob 10G question. I have a juniper ex4500 10G switch and Qlogic 3242 10G card. I use twinax cables for servers within the rack and they work just fine. But, now we added a new office which has 2 ...
4
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2answers
274 views

SC to LC converter - performance penalty?

I'm maintaining a cross connect and using a SC to LC adapter to patch the LC into my equipment. Was wondering if anyone has a clue on what's the penalty of using the converter in oppose to installing ...
0
votes
2answers
53 views

Transceiver for MM links up to 2k

I have 2 links of 1.5 mm f.o mm c / u I want to know if a transceiver GLC-GE-100FX would work for me, why and what are its variations.
6
votes
1answer
86 views

Do low temperatures cause problems installing new optical wiring or fixing broken optical cables by splicing?

One of our supplier reported big problems splicing (using this) a broken outdoor optical fiber cable when temperatures around or little bellow freezing point. They refuse to install new optical fiber ...
0
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2answers
171 views

Moving an Alcatel I-211M-L using Fiberoptic connection

I have an Alcatal I-211M-L that I'd like to move. Is it possible to buy fiberoptic couplers and cables to extend the range of the fiberoptic cable, or do I need to call Verizon to have them move it? ...
2
votes
3answers
106 views

Is SFP Transceiver on a Cisco switch must be a Cisco?

I just bought a SFP Transceiver (on Amazon) to connect an optical fiber between 2 CISCO switches (2960x). The SFP is detected as "Type : unknow". Do you know if I inevitably must buy a CISCO SFP ...
4
votes
2answers
51 views

Better throughput with 100 Mb NIC setting

Ran across something very odd today. Just had a symmetrical 100 Mb circuit installed at a site I’m contracting at. When the NIC is set for auto negotiate for duplex and speed, we only get ~96 Mb down ...
1
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2answers
230 views

25G SFP28 NIC and 25G SFP Adapter

My company recently purchased some Dell R740's with 2 Dual Port 25G SFP28 NIC's (Broadcom 57414) and wants to hook them up to an Arista 25G switch. We have two types of SFP adapters from Arista: SFP-...
0
votes
2answers
98 views

Acceptable Light Loss for SMF

I'm having some trouble finding a definite answer. I use a light loss tester to test our fiber (we dont have an otdr) and am unsure as to the acceptable light loss for 1310 SMF. So far I've figured ...
2
votes
4answers
782 views

1000BASE-LX/LH Receive power level greater than transmit power level

I have a pair of GLC-LH-SMD devices which are 1000BASE-LX/LH In the field they will be a couple of kilometers apart , but whilst I test the setup I only have 5m patch leads. I looked at the specs ...
0
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2answers
41 views

Cable for 4Gb Fibre Channel

I have two servers with 4Gb Fibre Channel HBA adapters. Looking for cable for them, I found reasonably priced cables that say they're 10Gb. I know that if this was copper, it would be overkill, but I ...
0
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2answers
43 views

How is wavelength assignment in Wavelength Division Muxing Rings determined? [closed]

I have this image that supposedly documents how to handle a 3-node wavelength division muxing ring: I know an n-node ring will need wavelengths (n * (n-1) / 2). But I have no idea how which ...
0
votes
1answer
47 views

Fiber Optic between two residential buildings [closed]

I'm not sure if this is the right forum, but thanks for your consdieration. Also, I apologize for the speculative nature of the question, I'm looking to extend internet to another building about ...
4
votes
2answers
358 views

Speed benefits when switching from 1Gb copper LAN to Fiber Optic

We are trying calculate how will the network performance improve when we switch from 1Gb copper LAN to Fiber Optic. We have 5-20 people simultaneously working on a Server via the 1Gb LAN. There are ...
0
votes
1answer
489 views

Cisco router compatible with optical fiber [closed]

I have a 887VA Cisco router (just to let you know the kind of router I'm already familiar with, its size and capabilities...). Now, I need another Cisco router (resembling the 887VA) in which I can ...
6
votes
3answers
732 views

Cables on a closed rack

I've just spent the last few days building my first server rack. It will be a significant upgrade to our current mess. I was asked to buy and install one and so I did. I was not completely aware of ...
0
votes
1answer
32 views

Does a 1xN PON fiber splitter always “utilize” all N outputs?

If I'm using a 1x32 PLC fiber splitter, and attenuation is 15.05 dB, will the beam coming in always split 1x32 and each strand will have the same attenuation whether I'm using 1 of the 32 or all of ...
0
votes
3answers
110 views

How data is routed from one landing point to another on submarine cables?

On submarine optical cables with one trunk and several landing points, how does data that leaves one landing point be routed to a desired destination at another landing point? I have many hypotheses: -...
1
vote
3answers
102 views

Are there any advantages in using optic fiber to connect a host computer to an ethernet LAN?

I saw that computer Network Interface Cards (NICs) that use fiber ports (SFP) instead of RJ-45 ports and I wonder if there would be any significant advantage in connecting the computers directly ...
0
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2answers
83 views

Why OM2 fiber has more fiber loss than OM1?

Recently, I am doing some research about OM1 and OM2 fiber. According to the provided information, the OM2 fiber has more loss than OM1, but it doesn't point out the specific reason, just 1 sentence. ...
2
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2answers
237 views

Reasons not to combine daisy chaining with path redundancy

Is there any specific (maybe obvious) reason why path redundancy and daisy chaining is not combined? Cisco does show some network topologies HERE, but the combination of path redundancy and daisy ...
0
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3answers
114 views

Know the fibre model with an SFP with diagnostic

We're using our fibre links with 1G. We would like to move to 10G with this fiber but we have to know if it can support it. It has been installed 10 years ago and we can't find the model. Is there ...
1
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3answers
349 views

10baseT and 10baseFX difference

What is the difference between 10baseT and 10baseFx are those types of cables or the boxes that are used to plug the cables?
0
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2answers
420 views

How to DIY terminate Multimode Fiber? [closed]

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 MMF ...
1
vote
1answer
171 views

Aerial fiber to replace underground fiber optic cable

I have aerial fiber optic cable only. Can I use this cable underground because I have excess aerial cable but I have no underground cable? In short, is aerial fiber optic cable insulated enough to be ...
2
votes
2answers
149 views

How do broadband optical transmitters work?

So I'm a hardware engineer learning about networks, and one interesting subject that my book glassed over was how hybrid fiber-coax networks work. One thing that was throwing me off was that the ...
0
votes
1answer
65 views

what type of fiber SFP for cisco 6500 Gbic module

I have an old 6500 with 6516a GBIC module (picture) and im planning to do some testing with it. I've already looked over Cisco's product page, and im still having a hard time identifying what SFP ...
0
votes
1answer
688 views

Correct way to set up network with multiple routers/access points over fibre/ethernet

Heading Below is a network map for a network. Router 192.168.0.1 has DHCP enabled. Routers 0.2, 0.3, and 0.4 are connected via their LAN ports to router 0.1 by ethernet cable, and have DHCP disabled ...
1
vote
2answers
232 views

Data field and Payload Field in Fibre channel frame header

I came across this image of a FC frame header. I see that there are two fields, a 2112 byte data field and a 2048 byte payload field. I tried to read about how to distinguish among the two, but ended ...
0
votes
1answer
959 views

how to build a long distance wired network [closed]

My shop 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 ...
3
votes
2answers
1k views

sh int transceiver Explanations

When looking at the output of show interfaces transceiver on a Cat 4500X you notice that there is a Tx and a Rx power measurement. My questions about this output are: Why is each transceiver ...
5
votes
3answers
302 views

Building too large for ethernet runs

I'm pretty new to network design. I know enough to wire small buildings and such, but I'm puzzled as to how work this one out. A building I'm working on is an odd shape, and very large. ...
1
vote
1answer
250 views

raisecom olt (ISCOM5508) default gateway

how can i config the default gateway and the mgmt ip address in this raisecom equipment? Product Name : ISCOM5508 Product Version : P300R003C000T000 ROAP Version : 1.3 System MAC Address:...
0
votes
1answer
506 views

Choosing the right SFP+ Transceiver

I am trying to connect a new server of mine to an existing FC Patch Panel on a strand that has been patched to a FC Switch. The Fiber used is single-mode and in order to hook it up, I am using a ...
0
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2answers
332 views

SFP port with fiber optic cable

I have a switch with 2 SFP port and I want to connect a fiber optic cable to the switch. I need to connect the cable only on one SFP port or on both SFP port?
1
vote
1answer
42 views

Fiber Cable speed tester

How to select Fiber Cable (multi-mode or single mode). For example, if i need fiber backbone around 700 meters with 2 GB speed, how i choose, om 2, om 3 or OS 1 & Os 2. Is there any calculator or ...
8
votes
2answers
380 views

What certifications are there for Fiber Optic termination and splicing?

As a knowledgeable person in computer networks I have always had an itch for learning how to create custom-length fiber optic cables. So, as a personal goal, I want to get trained and certified in ...
0
votes
1answer
45 views

Force10 S4820T Fiber GBIC is not working

One of our clients bought two of these switches. Now, Dell sent a fiber splitter with a 40GB GBIC. See the pictures below: Now, I connect both GBICs and connect both splitters, one in each switch, ...
1
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2answers
205 views

RCV Err increases and port blinks amber

Sometimes gigabit port starts blinking amber light and when i do sh int count err i can see how "RCV err" growth. SW-Floor-2#show int gig 2/0/27 counters err Port Align-Err FCS-Err ...