Questions tagged [sfp]
Small form-factor pluggables are mostly optical, modular transceivers for gigabit or 10 gigabit (SFP+) network connections.
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Compatibility of QSFP28 and SFP+ ports
Question
Can I connect a 25Gbps QSFP28 port to a 10Gbps SFP+ port using either fiber or copper?
Background
I'm building out a network with some high speed interconnects coupled to a slower gigabit ...
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Are SFP+ "Ethernet" direct attach cables compatible with Fibre Channel?
I'm trying to find some short 8G SFP+ Fibre Channel direct attach cables but they're rare and expensive, can a passive 10G SFP+ direct attach cable marketed for Ethernet be used between two 8G SFP+ ...
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Can I use 10Gb Copper SFP+ modules in a Dell PowerVault ME5 25Gb iSCSI controller card?
We are looking to upgrade our SAN from 1Gb copper to 10Gb, preferably with the option to use either copper or optical for flexibility on the switch side. I like the option of upgrading to 25G or 100G ...
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mellanox connectx-3 (cx312a) link down though light is blinking
I have a system running TrueNas Scale. For some odd reasons, the system does not see the link is up even though dmesg reports it up and the light is blinking on the port. I'm not sure if this is optic'...
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HPE Proliant Gen8 FlexibleLOM options for homelab network [closed]
In my homelab rack I've got a pair of DL360p's and a pair of DL380's (one P, one E).
Network hardware wise I've got a 24 port Brocade 300 and a 48 port POE+ Avaya switch with a single SFP+ port. (...
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Unable to establish link between Mikrotik router and Mellanox NIC
I am trying to establish a 25 GbE link between Mikrotik CCR2004-1G-12S+2XS router and a server running Windows Server 2022 with Mellanox NIC (MCX512A-ADAT).
For cabling, I tried using the official ...
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Connecting 10G SFP+ slot to 1G SFP slot
Will connecting a switch operating in fixed 10GB mode and SFP+ slot and SFP+ module,
to:
A server's network adapter operating in fixed 1GB mode with SFP+ slot and SFP+ module result in damage to the ...
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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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Questions on 40GBe QSFP+ to 4X 10GBe SFP+ breakout cables
I run a small(~400cores) Linux cluster.
I am using aggregated 10GBe ethernet ports(with Netgear XS728T), but now considering an upgrade to 100GB ethernet with QSFP28 ports(Mellanox SN2100).
As I don't ...
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Protocol conversion: 10GBASE-KR to 10GBASE-R
I wanted to get some insight if anyone is aware of transceivers or translation devices that would be able to convert 10GBASE-KR to 10GBASE-R. The intent is to support a 10GBASE-KR interface from a VPX ...
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Ubuntu ethernet bridge limited to 1Gbs?
I have an Intel 522SFP network adapter in a Ubuntu Server machine and I am facing a strange issue with speed.
If I use it "directly" with this netplan (enp1s0f0 interface) :
# This is the ...
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sfp and sfp28 compatibility
I have gotten a server which has "Broadcom 57454 10/25GbE SFP28 4-port OCP Ethernet Adapter" When I connect it to a switch port which is sfp the link status on the server is reported as ...
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Cisco SFP module detection
I have 2 Cisco SG500X switches that I want to stack over 10G fiber. I have two 3rd-party SFP-10G-SR modules which I'm having trouble with.
Should SFP modules be detected by the switch when plugged in,...
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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: ...
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"Unsupported module type was detected" during boot of Intel X520/I350 card in Dell PowerEdge R630
I've purchased a Dell PowerEdge R630 with an integrated Intel X520/I350 (2x SFP + 2x RJ45) network card. I've setup the server locally (on a 1G RJ45 network) to test that everything worked as expected ...
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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. ...
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Is there any load when reading EEPROM inside SFP module?
I am trying to measure the optical receving/transmitting levels with ethtool on the server.
It was confirmed that ethtool reads information from EEPROM inside the SFP module.
When a read operation to ...
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Connecting an SFP+ port to a QSFP28 switch
Background - I am working with a client trying to get a new Dell R540 server onto the client's network. They provided me with a single port on their Cisco Nexus 93240YC-FX2 Switch to connect the ...
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How to force 1G speed for Juniper QFX5100 10G ports?
I have available a Juniper QFX5100-48S switch (48 SFP 10G ports, 6 QSFP ports) that I cannot join into our network since an SFP DAC 10G cable connecting it to an SFP port on a HP V1810-48G switch does ...
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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 ...
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What transceiver can convert 10GBASE-KR or 10GBASE-KX4 to 10GBASE-T or 1000BASE-KX to 1GBASE-T? [closed]
A pci-e network card supports 1000BASE-KX, 10GBASE-KX4 and 10GBASE-KR on SFP connector, but the required mode for twisted pair support on RJ45 (8P8C connector) is 1G- or 10GBASE-T.
What type of ...
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What settings are needed to make a FortiSwitch 148F communicate with an HP 5130 using SFP Transceivers?
I have a FortiSwitch 148F-FPOE that will not communicate with an HP 5130 Switch. I get link lights on the ForitSwitch but not the HP.
The HP 5130 has a Dell-branded SFP module and the FortiSwitch has ...
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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 ...
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Are Dell parts compatible with non-Dell hardware? [closed]
I could not find the answer...
I'm about to buy this piece:
https://www.dell.com/pt-br/work/shop/intel-x710-10gb-sfp-mezzanine-adaptador-e-porta-dupla-da-dell/apd/555-bdpg/equipamentos-de-rede
Will ...
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CX4 Infiniband to SFP+ Converter
It may be a weird question, but I'm facing the following problem at the moment:
I've got a DELL PowerConnect 6248 Switch (managed Gigabit-Ethernet) with the YY741-Stacking module in the back. The ...
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How compatible are SFPs really?
How compatible are sfp modules between devices. For example, am I likely to be able to plug something like this into a cisco, hp, or other switch with mini gbic ports?
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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!
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Wiring for a SFP rj45
I have a CISCO Catalyst 3560G and I bought two SFP to RJ45 Copper Module for Cisco GLC-T/SFP-GE-T Gigabit 1000Base-T Transceiver. I plugged one Module into the CISCO switch and the other into a ...
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SFP+ iSCSI Optic Transceiver: Dell VS Other
Out of curiosity, does anyone have any experience with Dell iSCSI SAN connected with SPF+ transceivers?
My question is about what makes this:
https://www.dell.com/en-us/work/shop/10gb-iscsi-sfp-...
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Possible fake transceivers for X520-DA2, hindering performance?
=== Storage ===
QNAP - TS-EC1279U-RP (12 x 3TB in RAID 6)
Intel - X520-SR2 Trancsiver
AFBR-703SDZ-IN2 (SFP)
i7 Windows 10 with intel ssd 750 (2000 MB/sec)
I have changed all the setting to get the ...
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Converter for RJ45 port to SFP+
2 of my servers have an Intel X552 network adapter that has 2x 10GbE RJ45 ports. All my other equipment is at least dual RJ45/SFP+.
I'm looking at upgrading my core network to 10GbE and I'd like to ...
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HP NC523SFP no link detected
I have two HP NC523SFP 10Gb 2-port (1 on a HP DL380e Gen8 and the other on Dell PowerEdge 2950) both systems have Centos 7, the cards are detect and are running the same firmware.
I have connected ...
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vCenter moving VM from ISCSI target to different ISCSI target
In my server lab, I am running a vCenter cluster with 2 ISCSI targets. Both of these are directly connected to switch using SFP+ port.
I assume, when I do such a process as cloning a VM from one ...
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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 ...
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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 &...
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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
[...
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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 ...
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Why Cisco port is not connected but other side come up
On my Cisco Catalyst 3850 there is a SFP Module which is connected to another device, the port on the Other device (vendor equipment) come up but my interface is still down. The DOM Information show ...
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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: ...
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Collecting SFP+ attributes in Linux
I need to collect hw component inventory from physical systems running RHEL (6 and 7) and its derivatives. I need to collect the SFP+ attributes along with the rest of the components. I know I can ...
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Plug 10GbE appliance into the SFP+ port of a switch on a 1GbE network
Is this possible?
Our setup:
Core switching: Catalyst 2960-X
48 x 1GbE RJ-45 ports
2 x 10GbE SFP+
Uplinks between switches are RJ-45. We plan to get rid of these and use a 10G switch for switch-to-...
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Linux optical 10Gbe networking, how to diagnose performance problems?
I have a small cluster consisting of 3 servers. Each has two 10Gbe SFP+ optical network cards. There are two separate 10Gbe switches. On all servers one NIC is connected to switch 1, second NIC is ...
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Direct attach sfp+ cables (passive) connection issues after power restoration
I have got two servers with SFP+ capable network cards connected to the Unifi Switch uplink ports. Each of the servers has its own UPS and the switch shares the UPS with one of the servers. The ...
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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 ...
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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 ...
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SFP Card compatibility
We are installing our first "professional" server configuration in the office. We will install a HP ProLiant DL120 Gen9 that will provide a hypervisor based on CentOS / KVM and should be connected to ...
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Do 10GbE SFP transceivers need to match?
I'm looking to connect a Promise SanLink 10GbE SFP NIC to a Cisco 10GbE switch. My general question is whether the transceivers need to match. In other words, do I need to find a transceiver which is ...
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How to connect MD3800i (iSCSI 10 GbE) to PowerConnect 8132F (SFP+ 10 GbE)
I want to connect a SAN (MD3800i) to a PowerConnect 8132F switch. Both support 10 Gbit Ethernet, but the 1st does it via iSCSI (RJ-45), while the second - via SFP+. Any adapter that could go in ...
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Dell X4012 copper options?
I've been using the Dell X4012 12x 10GbE switches with fibre and DAC cabling in several of our locations for a year now, and their lack of SFP+ ID checking made them easy to integrate. However, now I ...
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Do HP switches lock their SFP Ports?
Does HP lock the SFP ports on their switches?
I'm looking in particular at an HP E5406zl, but I imagine it's a policy across all their switches or all their switches at a particular level.
We're ...
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