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.
2
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2answers
73 views
How do fiber Ethernet transmitters set their power output?
I've noticed that fiber-optic SFP modules from Cisco and the like often specify a range of power outputs, such as -3 to -9 dBm. What determines the actual power output we should expect to see from ...
0
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2answers
44 views
Cisco SFP for single-strand single mode connection over 10km
Is it possible using only Cisco equipment to link two sites approximately 15km apart using only one single mode fiber strand.
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5answers
176 views
New office cabling: should we use CAT7 or CAT6a? [closed]
We are going to do the cabling in our new office building and we are thinking to lay down 10Gbit cables since we use HP switches that come with 10Gbit ethernet ports. We will also lay down few fiber ...
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0answers
30 views
Fiber connection looks ok but no connectivity
This is my first attempt at a fiber link so pardon my stupidity if I have missed something basic.
I have to extend my network to an outside cabinet. To do this I have bought a HP mini GBIC for my HP ...
2
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3answers
124 views
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 ...
4
votes
2answers
112 views
Is there a GBIC that supports Multi-mode and Single-mode fiber?
I was having a discussion with a friend of mine about fiber and he said that he has GBICs that support both Single-mode and Multi-mode fiber in the same device. At first I thought, no way, that can't ...
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1answer
37 views
fiber networking: making sure I understand
Im costing out a network in a building that has multi-mode fiber already available. It's entirely unused and requires switching in multiple locations to make a working system.
I want to make sure ...
6
votes
2answers
488 views
What kind of cable is this?
I need to cost out some switching and figure out how to network a PC to this type of network.
Clarifying: This is to connect units in a high rise facility. Each unit has the top picture in a ...
0
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0answers
32 views
Questions about fiber and a wishlist [closed]
So I am looking to create a wishlist of what our company may want to implement in the future should we get money for grants. I was wondering if anyone could make recommendations to actual ...
0
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0answers
52 views
B Spawn Networking? [closed]
The company I work for is trying to obtain a Static IP address and amongst the troubleshooting the ISP technician came in to replace the cable/fiber modem battery. While he was here he said the static ...
4
votes
1answer
85 views
Solaris crossover via fiber
I have two Sun servers running Solaris 10. Both have Emulex fiber channel cards. I'd like to connect the two in a "crossover" fashion like you would copper ethernet & IPv4. Point being I have a ...
1
vote
2answers
143 views
Multipath performing very poorly RHEL/HSV200
I'm running a RHEL 5.5 with multipath@HSV200 storage system.
The disk performance for write is VERY poor comparing to Windows-system counterparts (which are using the same storage and multipath).
...
1
vote
3answers
106 views
Netgear managed switches - Fiber ports ( does it work without them? )
Silly question but cannot get my head around it. Netgear managed switches all seem to come with Fiber uplink ports these days.
I'm thinking about getting on of these:
...
1
vote
0answers
69 views
SMC Tigerswitch and HP Procurve wouldn't connect with fiber
the first thing that I don't understand is why the SMC switch considers the pair of single mode fibers as one port,one link, but the HP switch sees the two fibers as two ports.
when I wanted to ...
1
vote
0answers
107 views
Solaris x86 11.1 and qlt driver — only 3/4 ports attach
I'm using the QLogic QLE2564 4-port 8Gb HBA. The problem I have is that when I attach the qlt target mode driver to the card, only 3/4 ports attach the driver.
ffffc10006854e58 pciex1077,2532, ...
2
votes
2answers
63 views
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 ...
4
votes
2answers
374 views
Connecting Fiber interfaces on Cisco switches
I'm trying to replace an old Cisco Catalyst 2950 with a new Cisco 3750X. Unfortunately, these SFP's are so expensive, I'm trying to work with what I've got. Please note the diagram to see what ...
1
vote
1answer
121 views
Fiber Channel adapter statistics Linux
Anyone know how to get Fiber Channel adapter performance statistics out of Linux? I.E throughput.
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0answers
190 views
Do Gigabit ethernet single-mode fiber network adapters exist?
I am attempting to set up a server with a total of four single-mode fiber ports - two need to be at least 1Gb and two must be 10Gb. I have found a variety of 10Gb single-mode fiber network adapters ...
1
vote
1answer
76 views
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 ...
11
votes
4answers
623 views
Long Gigabit Ethernet Run
I am trying to get an Gig-E network between two buildings that are approximately 260 ft. away. While some TRENDnet switches failed to be able to connect to each other over Cat 6 at that distance, two ...
11
votes
2answers
378 views
Two identical fiber optic broadband lines working as one
I am looking for a way I could combine two 100Mbit fiber optic lines into a single connection for our office. I assume it involves some Cisco learning or something similar.
Do I need to configure ...
0
votes
1answer
79 views
Mixing and choosing CWDM and DWDM parts [closed]
I have been looking at the page "Cisco Enhanced Wavelength Division Multiplexing Product Line", on Cisco's web site. I would like to light up some dark fibre for at least 2x 10Gbps Ethernet links. ...
5
votes
2answers
185 views
Protection while working with fiber optics?
As it's dangerous to accidently look in a fiber optics, what does one normally use as a protection to this while working with fiber optics? Are there safety glasses for such things? How is that ...
3
votes
2answers
307 views
8Gb Fiber Channcel HBA vs. 10 Gb SPF+ Converged HBA
I am putting a Dell server together, more specifically R720. I have to select the correct Host Bus Adapter. This HBA on R710 will connect to a storage device. I am confused between these two:
QLogic ...
2
votes
3answers
177 views
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 ...
6
votes
3answers
286 views
Mixing SFP's with different speeds
I need to install new SFP's in a location; however, I need them to connect to existing switches and I'm not sure what SFP type they are. All I know is I've got MM Fiber.
If I installed Cisco ...
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vote
0answers
351 views
Newly Resized Luns not Showing correct LUN Size RHel 5.3
My linux servers are not showing their newly resized fibre Luns after being extended on the fly(online).the storage guys have successfully resized the LUNS from 1Tb to 2 Tb .We are running fibre SAN ...
3
votes
2answers
210 views
Brocade 200E Switch - Fibre Channel
What I have:
Fujitsu-Siemens PRIMERGY BX600
Brocade 200E (16 port, 4gbit fibre).
My question:
Imagine a QNAP with a fiber 10GBIT card connected to the Brocade 200E (16 port, 4gbit fibre). Would ...
1
vote
1answer
263 views
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?
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vote
3answers
563 views
Fibre (Fiber) Optic - Mixing SFP's and Switches
My generic question is: Can you mix switches on the opposite sides of a fibre link, or more accurately different manufactuors tranceivers.
We just bought several new HP ProCurve v1810 series switches ...
4
votes
1answer
291 views
Will 10GBASE-LR work if 10GBASE-LRM used to work on the same cable link?
We have got some old 62.5um single-mode fiber links in our building. Network people told me, that Cisco 10GBASE-LRM with Cisco mode conditioning patch cables works fine on those cables and provides a ...
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votes
2answers
86 views
need more information on a “10 gb bidi”
We have a 10 gb fiber run between 2 buildings about a mile apart and will not be able to purchase any more fiber. I was told I could use four "10 gigabit bidi's" to allow 2 separate ethernet ...
2
votes
2answers
127 views
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 ...
1
vote
0answers
94 views
I need help setting up my Cisco SG-200 and SignaMax 065-1100 MM fiber link
I replaced a broken SignaMax switch with built-in fiber connectors with a Cisco SG-200 unit and a GLC-GE-100FX mini-GBIC. The other end of the run is using a SignaMax 065-1100 media converter and I ...
0
votes
1answer
373 views
2 x Netgear GS724T (Dual GBIC) trunking issue
I have the following:
Netgear GS724T (Firmware Version V1.0.3_35, Protocol Version - 2.001.002)
4 x Indineon ISFP GBR/FC
Settings
STP Function - Enabled
Fast Link - Enabled
Trunking port 23,24, ...
2
votes
4answers
348 views
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 ...
3
votes
1answer
438 views
1000 Mbit/s fiber switch to 100 Mbit/s fiber switch - no communication
This morning, I troubleshooted a fiber connection between two switches in the same building. It was a single-mode fiber. I knew this fiber was fine, because I had installed it myself and tested (with ...
4
votes
1answer
1k views
New Fiber Optic Internet Connection, want to use Sonicwall TZ200 as main router, WAN/VLAN
Key Facts:
We have a new internet connection with Movistar.
It is a 100/10 Mbit line.
We want to use the TZ200 as our main router.
The Fiber Optic router is a ONT I240
The internet router that ...
4
votes
4answers
584 views
Are there solutions that can combine gigabit ethernet, 10gig ethernet, and fiber channel in a single device?
We currently have Brocade 200E fiber switches, connecting 2 EMC CLARiiONs to 4 VMware ESXi hosts. We are looking into new storage options using iSCSI with our existing ethernet network, including the ...
2
votes
2answers
172 views
Is fiber neworking as easy as getting a switch and a NIC?
I have a handful of servers at home and I am wondering how feasible it is to network them together using fiber optic. Is it as simple as getting a fiber switch on ebay, and getting fiber NICs for ...
1
vote
2answers
2k views
How to check fiber connectivity in ESXi 5.0?
On a VMware ESXi 5.0 host, how can I check if fiber storage adapters are properly connected to the fiber switch/SAN, i.e. if the fiber link is up?
0
votes
1answer
161 views
HP networking unstable over fiber connection
I have a 3com Baseline Switch 2928 that's connected over fiber to a 3com superstack 4500. The fiber is singlemode and has the suitable SFP modules on both switches.
The switches (and connected ...
0
votes
2answers
67 views
What SFPs can be used with Dell MD36x0f storage?
I've not found any information about used SFPs and supported cable length (which is what I actually want to know). Online configuration wizard does not allow to choose SFP type, only quantity. One ...
0
votes
1answer
88 views
Netgear FVX538v2 slow whene connected to Canoga Perkins N525 ETSU
First of all thank you in advance for helping me. my issue is the old network admin found a problem whene he connected the firewall and the ETSU together the through put went down to less than 1 mega ...
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votes
1answer
144 views
Fiber-optic communication: Link length [closed]
I am trying to understand fiber optic communication over long distances:
Can optical fibre communication links be used for a length of 100km as well as 100000km without having to change sender and ...
6
votes
2answers
210 views
If fiber runs 1gig fine, are there any concerns when considering upgrading to 10gig transceivers?
We had fiber installed (connecting ~10 buildings) around 5 years ago and it has been working great. The initial setup involved Procurve 2848 and 2824 switches w/ 1gig transceivers. However, lately we ...
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votes
3answers
342 views
Webserver at home: will my DSL line be good enough? [closed]
The evolution of DSL lines and technologies such as FTTH has make me wonder if traditional hosting services could be in danger.
If you want to host your own domain, for example for a blog or a ...
9
votes
6answers
1k views
Direct ethernet link between two servers
Say I had two servers which needed super-low latency (Database, file etc.). Would it be possible to directly connect the two servers with 10GbE, so each server had 1 (in the real world it would have ...
1
vote
2answers
2k views
IBM storage ds3400 Cant connect to management using fiber
i have a problem with a DS3400 IBM storage system we bought a few years back.
when i try to manage the storage using its IBM storage management i cant find it using automatic detection even though its ...
