Questions tagged [sfp]
The Small Form-factor Pluggable is a transceiver module for gigabit-range connections, mostly optical (up to 2.5 Gbit/s). It is also called mini-GBIC sometimes. SFP+ modules may support up to 16 Gbit/s.
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Hardware compatibility of SFP+ devices
I have a Supermicro E300-8D (used as firewall) I want to plug to a Mellanox SX1012 device. I have tried different cables :
mellanox mc2309130-001
supermicro cbl-0348L
different switches :
Mellanox ...
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Can wrong SFP module damage equipment?
SFP modules convert electrical data from the equipment to optical signals. There is no incoming power surging from an optical port to damage the equipment according to my undarstanding of fibre optics....
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same rack connection: better RJ45 or SFP?
For a connection between two devices on the same rack:
Is there any notable difference or advantage between using 1Gb SFPs and using Gb Ethernet ports? (making a bonding/etherchannel).
I know for ...
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Support for 10GBase-T RJ45 SFP+ transceivers
Support for 10GBase-T RJ45 SFP+ transceivers in modern switches can be a hit and miss. What is the technical limitation as to why some switches don't support them? So far my understanding on the issue ...
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SFP+ / SFP28 / SFP backwards compatibility
I have the opportunity to upgrade from VDSL to any of 1/10/25 GbE fiber. I have only an SFP router presently (Edgerouter 4), but would like to have the service provider upgrade to optimally the 25 ...
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SFP28 port and SFP module (not SFP+)
I'm about to buy a device that has some SFP28 ports. I know that SFP28 is backward compatible with SFP+. But I want to know its backward compatibility with the SFP module.
Can I use an SFP module (...
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What is Ethernet MDI in the case of SFP interfaces
I am reading on Ethernet and I understand that for copper ports, the MDI is the physical connections from the PHY to the medium's connector, including the physical port itself, where the cable is ...
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Must SFP28 controllers explicitly support different SFP28 transceiver features (i.e. SR vs eSR vs cSR)?
To solve a specific server clustering problem I am opting to split the patching of the servers to both "in the same room" and "in another room". We have multimode cabling between ...
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Duplex SFP via one single mode fiber [duplicate]
Is that possible to use duplex SFP which will send and receive signals over only one fiber in backbone? Please refer to the picture.
If so, then how the termination of patchcords and backbone's fiber ...
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Will a 3rd party SFP module void Cisco warranty?
Will using a non-Cisco branded SFP module void any warranty with Cisco (either with the switch or network module)?
The SFP we are looking for more cost effective alternatives is SFP-10G-SR-S in a ...
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SFP, standard EEPROM? [duplicate]
I have a SFP compatible module which has an I2C interface. I understand that SFP is a pseudo-standard but I can't find any documentation on the I2C interface and what registers in the EEPROM do what.
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How come SFP modules are so incompatible?
In theory I like the SFP concept very much. However what strikes me is the manufacturer restrictions for every switch/card. How come different SFP modules work with different vendors only? Is there a ...
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Connect 1GE SFP MM to 10GE SFP MM
I have a situation in which the ISP can only accommodate a 1GE SFP and single mode fibre, but we have bought 10GE SFP.
Is it possible to get the physical link up when connecting a 1GE SFP to a 10GE ...
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Small Form-factor Pluggable(SFP): basic , connection with 2.SFP
**My understanding of SFP functionality. **
SFP is an “interface” between 2 parts of a device.
SFP is a transceiver There are input and output, electrical to optical or optical to electrical. SFP ...
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SFP not working on new switch
Switch: Cisco 2960G 24x 1G ports and 4x 10G SFP
SFP fiber module: 10Gtek AXS13-192-10
NIC: Solarflare SFN7122F
I got a new to me switch, after resetting to factory defaults I got it all configured for ...
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Do you need SFP on both ends?
Can I have an SFP port with a RJ45/ethernet transceiver on one end and connect the other end to a regular ethernet port?
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Fabric Extender for Peer-Link on vPC domain (two Nexus 5000 switches)
I have two Nexus 5000 series switches. My question lies with the Peer Link. My intentions are to use e1/31 and e1/32 on both switches as the peer link. Here are the exact SFPs that I am using for ...
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Exceeding SFP manufacturer maximum distance
What are the consequences of exceeding the SFP manufacturer maximum distance ?
Example from Cisco, Table 2. SFP+ port cabling specifications of https://www.cisco.com/c/en/us/products/collateral/...
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QSFP28 doesn't recognize 4x25G breakout cable and link with 4 SFP28s
So to preface, I'm not a network engineer but am somehow in charge of getting our juniper QFX5200-48y configured. The goal is to get our FS brand SPF28's and QSFP28's to talk to each other on the ...
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QSFP-DD Transceivers for lower rates
I am trying to figure out if a QSFP-DD transceiver can break out 8x 10G lanes if I make/use a 1:8 fiber optic breakout cable. It seems like most transceivers are rated for one speed only, so if I get ...
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SFP+ 10GBASE-LR and attenuator
This picture is a part of the Intel E10GSFPLR (SFP+, Long Reach) datasheet. Can I use them in a short link (less than 1 meter) without any attenuator? Which numbers are important in this datasheet to ...
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If SFP supports 4.25Gbps why don't they make a SFP RJ45 2.5Gbps module?
SFP transceivers support speeds up to 4.25Gbps, but SFP RJ45 only support 100/1000Mbps
Why is there no support for 2.5Gbps RJ45? Is this a technical limitation or did no one ever decide to make SFP 2....
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Open Switch (OPX): Accessing SFP EEPROMs via I2C on a Dell S4112F-ON
The S4112F-ON switch has 12 SFP+ ports; we are using several of them. My goal is to access the EEPROM on ALL the SFPs on the switch via their i2c interface with i2c-tools (linux) and ultimately open ...
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Auto negotiation and SFP+
As far as I know, SFP+ ports are connected to the host by SFI (SerDes Framer Interface) in a white box (I think it was Edgecore). Is it possible to have the auto-negotiation feature in these kinds of ...
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Single mode, single strand fiber handles 1Gbit but not 10Gbit
I have a strand of dark fiber between two buildings, with the run being roughly 1.5 miles/2.4km, and it is currently operating with 1Gb BX 10km optics, but when I try to put in 10Gb BX 10km optics, I ...
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Fiber link loss on Cisco Catalyst 3750x series switch
I have cisco catalyst 3750x 24 port switch series switch, and the switch has C3KX-NM-10G module.
Problem :
I have connected fibre optic in SFP+ transceiver on G2/TE1 (Uplink). After 7 to 8 hours, the ...
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Using XFP-10G (120 KM Range) on Juniper MX routers
Hi everyone,
We recently installed a new 10G XFP optics module in Juniper MX router. As per the customer , XFP supported range is 120 KM and it is from some third party vendor named 'menara'.
Menara ...
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SFP to SFP going through multiple environments – segmented or via single cable?
Design consideration – should I use a single fiber between two server rooms or split it into segments for easier maintenance/diagnostics/replacement? But splitting the fiber into multiple segments ...
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Can a QSFP28 port break out to 4 SFP+ ports to separate hosts?
I apologize in advance because I suspect this is already covered. I've read some of the posts and I suspect the answer is "it depends on the vendors involved" or just "no".
I'm ...
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Using Ethernet cable in SFP+ Port
Can you use an Ethernet cable (Cat6) in a switch's SFP+ port to connect to another switch?
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Connect switch to router
I have a switch with 4x 10Gb SFP+ ports. Can I use one of the SFP+ ports to connect to a router with a fiber cable?
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Connecting switches together
I have L2 switches which will be daisy chained together (yes I know, daisy chaining isn't great, but anyway..) The L2 switches will then link to a L3 switch.
Both the L2 and L3 switches have x4 10GbE ...
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10G SFP+ transceiver with OM4 fiber cable - Maximum cable length?
I can't find 10Gb SFP+ transceivers supporting cable length over 300mt (we need 400/500mt) is there a standard/physical limit on this, or such transceivers, with extended length support, do exist?
We'...
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Activating the NEBS Compliance SFP on Juniper MX disabled due to Ambient Temperature Exceeded
We have faced an issue on Juniper MX960 that some SFPs (10G Optics) were disabled due to ambient temperature exceeded. This was observed in the syslog messages on MX. However after the physical ...
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Fiber between two sites - no signal lights
We need to have fiber connection between two sites (distance less than 300 meters from each other). Currently there is multi-mode fiber connected to old switches working nicely. Now we are updating ...
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Are optical Gigabit SFP modules backwards compatible with 100Base-Fx?
My FTTH connection is using an old CareLink CL-MC-W2B-20-100 optical converter. It is labelled:
10/100 Base-T to 100Base-Fx bi-direction/single fiber media converter
10/100M Single mode WDM 20Km ...
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Latency of 10G fiber SFP+
I'm optimizing network stack for latency. We were using SFP+ with fiber than we came to know that Direct Attach Cables (DAC) have lower latency as there is no SFP involve Link. We are measuring wire ...
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Fiber SFP from Mikrotik RB4011iGS+RM (SFP+) to ZyXEL GS1900-10HP (SFP)? [closed]
Suggestions how to run an SFP from my MikroTik RB4011iGS+RM (SFP+) to a ZyXEL GS1900-10HP (SFP)?
Apparently I'll need a different SFP module on each end, due to the different interfaces, while making ...
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SFP-10G-LRM compatible with Single Mode Fiber?
I just started working with new company and found they are using SFP-10G-LRM with single mode fiber. How could this be? I thought since the SFP-10G-LRM is Multimode, it can't work with single mode ...
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SFP to RJ45 for 10Gbit network
I am in the process of upgrading some of our network into 10Gb and grabbed the following:
A network switch by netgear, mode:GS110EMX
A bunch of assorted cat8 cables(for future proofing)
Two 10gtek ...
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Does a SFP port indicator goes on when receiving or transmitting or both
My questions are on the bottom, feel free to skip my debugging story if you're in a hurry.
Story
I started to check a network spanning tree status. All switches are connected on fiber, through SFP ...
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SFP/SFP+: Extender? F/F panel passthrough?
My primary question is this:
Is it possible to have a simple passive SFP/SFP+ bulkhead passthrough connector, with two female SFP/SFP+ sockets facing opposite directions and wired directly together, ...
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SFP LC to LC path code recommendation [closed]
I need to connect to Ubiquiti (router > Switch) using SFP.
I believe I need a Ubiquiti Networks UF-SM-1G-S transmitter (BiDi).
the cable will be around 40M long and crossing the house, underneath ...
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new SFP network for newbies
I never really sealed with SFP before but I want to created a new fibre network.
Can SFP just be plug & play like ethernet or do you need a lot of knowledge ? I assume it's carry the normal IP/...
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Will OM4 Fiber Work with my 1GbE Fiber Transceiver?
What is the fastest cabling that can be used to connect the transceiver that Meraki calls the 1GbE SFP SX Fiber Transceiver?
Source: meraki.cisco.com/products/switches/accessories
I'm trying to ...
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SFP modules and LC-to-LC patch panels?
Simply put, we are joining two sites that are 200m apart using 8 core OM4 Multimode
fibre cable. Am I correct in understanding that lc patch panels on either end of the fibre cable are ok and that ...
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How to connect QSFP+ transceiver with MPO connector and SFP+ transceiver with LC connector?
In data center application, 40G QSFP+ transceivers with MPO connector and 10G SFP+ transceivers with LC connectors are most common transceivers. But, with two different connectors, how can we make a ...
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Troubles wiring two network rooms with optical fiber and SFP-enabled switches
I'm in charge of the new network installation in the new office of my company, and I have troubles wiring two network rooms (one for servers and incoming internet and the other one for wiring closets) ...
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Do I need to protect SFP ports and optics from dust/contaminants? If so, how?
I have a used switch with some SFP ports and some SFP modules installed, which I don't use.
All new switches come with little rubbery bungs that block up unused SFP ports, but since this old procurve ...
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Non-HP transceiver and HP switch
Does a non-HP single-mode transceiver work in a HP switch, and does a non-HP single-mode transceiver communicate with a single-mode HP transceiver?
