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Questions tagged [sfp]

Small form-factor pluggables are mostly optical, modular transceivers for gigabit or 10 gigabit (SFP+) network connections.

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10Gbe connection to 3 sites using Single Mode fibre. Require High Availability

An industrial site needs to link 3 seperate areas in a building in such a way that all the switches are on the same network and sharing the same wan link. The wan link will only be coming in from one of the sites and attached to the switch. ie SITE…
BOBA_FETT_81
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Must I install SFP+ transceivers in pairs?

I'm expanding the switch in our rack to a 10 GbE fiber internet feed. Specifically: we have an HP 2910al will expand the switch with a J9008A 2-port 10GbE SFP+ module will plug in 1 (2?) J9150A 10Gbase-SR tranceiver Our HP vendor tells us that we…
Stu Thompson
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Do SFP modules have their lasers off when the port is adminstratively down?

I have a Cisco SFP module that I might need in a few weeks, I don't want to pull it out but I wanted to know if I shutdown the port does it turn off the SFP module, I don't want to leave the laser on if it doesn't need to be powered on.
Peter
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Compatibility between SFP+ and SFP28 ports at 1gbps

I own a HP DL380 Gen10 with a HPE Ethernet 10/25Gb 2-port 640SFP28 (817753-B21) network card. The thing is that now I need 1gbps RJ45 connectors and those are not (strangely) present in the server. There seems to be no SFP+ adapters including RJ45…
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Some questions about SFP+ fiber networking in general

Ok. So I'm completely new to the world of fiber. I've used Ethernet all my life. We're looking to upgrade some of our infrastructure, and I'm thinking of getting a few of these: 10G Dual SFP+ NIC https://www.fs.com/products/75600.html for our…
AnonymousAdmin4729
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SFP port in ubiquiti switch says RX Fault

guys, so I recently bought an SFP cable to hook up to my server and my switch (Ubiquiti), but today, when I tried to hook everything up in the unifi controller in the port, I was connecting the SFP, I got an error saying RX Fault. I saw some posts…
DeadSec
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Unifi specific SFP adapters?

I have a few 10GbE SFP+ devices with Cisco plugs. I need to upgrade my network and am considering a switch from Unifi. Does anyone know if they play well with SFP+ plugs from other brands? Thanks!
kareldc
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types of SFP+ modules and cables to connect the SFP+ ports?

I did some googling about how to establish the connection between SFP+ ports. However, it seemed that there are many ways and combinations to do this. A little bit confusing. here's the problem: trying to connect datacenter server NIC(basically, the…
user53815
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100BASE-FX single-mode and multi-mode

First my assumptions (possibly wrong): 100BASE-FX -> Multi-mode fiber 100BASE-LX -> Single-mode fiber In fact, if I check some online information from CISCO regarding SFPs, it confirms my…
soyxan
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Cisco SG500X 10G-capable SFP+ port up at 1000Mbps

I am not an expert using SFP. I got a Cisco SG500X L3 switch with 4 SFP+ 10G ports. I got 2 mini-gbic HP AJ718A (8Gbps) and 1 fiber (HP 3PAR-10G-10M 850-200029 10Gbps). I plug the fiber into XG1 & XG2 ports (I know it's a loop but STP is enabled),…
Baud
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How to troubleshoot SFP+ connection flapping between two linux servers?

I'm trying to set up an SFP+ connection between two servers. The port keeps flapping. root@routeur:~# dmesg|tail [20266.254806] ixgbe 0000:04:00.1 eno8: NIC Link is Up 10 Gbps, Flow Control: RX/TX [20266.259946] ixgbe 0000:04:00.1 eno8: NIC Link is…
Cyrnaonyx
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Mikrotik HPE SFP interconnect

Can I connect a Mikrotik Router (hEX S, for instance) to HP/Aruba switch (J9776A, for instance) via SPF? What modules should I use? I can easily find compatibility table of HPE SFP modules and switches, of Mikrotik SFP modules and switches, but…
adontz
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Connecting Intel X722 SFP+ to Mellanox SX1012 QSFP via 4-split breakout cable using ubuntu

I have two servers running Ubuntu 18.04, each equipped with two SFP+ interfaces, each showing up in lshw like the following. *-network:1 description: Ethernet interface product: Ethernet Connection X722 for 10GbE SFP+ vendor:…
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partly no connection over sfp+

I have a really weird problem with a fiber connection. I have 2x2 fibers OM4 G50/125 between two rooms, room A & B (fiber length approximately 20m). I have two switches, a Huawei CE6810 and a HP 2530-48G-2sfp+ (each has a sfp+ module). 1) When I…
Daniel Hermann
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About 4x10G SFP+ <--> QSFP breakout cable

I have my very first Nexus switch to install in our new datacenter. It's a 3172TQ that comes with 4 QSFP+ ports. All my other devices have SFP+ modules. I did a little research and i found about the QSFP-SFP+ breakout cable. My question is: Can I…
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