Cisco SFP-10G-SR Compatible 10GBase-SR SFP+ 850nm 300m DOM Duplex LC MMF Optical Transceiver Module

Cisco Compatible

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SFP-10G-SR-FL Cisco (10GBase-SR) Optical Transceiver

Example Application

Platform Support

All FluxLight 10GBase-SRs

Data Sheet: HTML PDF


FluxLight's Cisco® SFP-10G-SR-FL is a compatible 10GBase-SR SFP+ Optical Transceiver and is factory pre-programmed with all the necessary configuration data for seamless network integration. Our transceivers perform identically to Cisco® original transceivers and are 100% compatible with other OEM and third party transceivers. The Cisco 10GBase-SR transceiver is 100% MSA (Multi-Source Agreement) compliant. All FluxLight's transceivers are tested for 100% functionality and guaranteed compatible for outstanding network performance.

FluxLight offers all brands and form factors of Optical Transceivers for all your networking needs. Now you have a reliable, compatible and affordable means to expand your network while maintaining its integrity.

Example Application for FluxLight's Cisco SFP-10G-SR-FL

BUILD IT BETTER: Cisco Nexus 93180YC-FX to Dell PowerEdge R640

Cisco Nexus 93180YC-FX to Dell R640 using SFP-10G-SR-FL optical transceiver and fiber jumper cables.

There are so many options to consider for final-meters data center connectivity. Most new connections are being implemented at 10Gbps but 25Gbps starting to emerge as a faster option. Beyond speed you can break down the other options into two main groups, one option being cables with integrated transceivers at each end (DACs & AOCs), and the second option using connectorized transceivers combined with cables of the appropriate type and length for each connection. These cabling options can be point-to-point or point-to-multipoint (breakout cables).

Today we are going to take a close look at one of the popular ways to connect a Top-Of-Rack leaf switch to a number of rack mounted high performance servers. The specific rack mounted items in this example are Cisco’s Nexus 93180YC-FX switch and Dell’s PowerEdge R640 server. The connectivity between these devices will be accomplished using point to point 10Gbps over OM3multimode duplex fibers. Additional items required FluxLight 10GBASE-SR optical transceivers and a 10Gbps Network Interface Card (NIC, one per server). Let’s look at each of these components in a bit more detail.

TOR Leaf Switch:  Cisco Nexus 93180YC-FX

Cisco Nexus 93180YC-FX using SFP-10G-SR-FL optical transceivers and fiber jumper cables.

The Nexus® 9300 platform is part of the latest generation of the fixed Nexus® 9000 Series Switches. Devices in this family are described by Cisco as being based on Cisco Cloud Scale (CCS) technology. The primary elements of CCS are,

  • Greater performance scaling through the use of multi-rate ports (1/10/25/50/100G)
  • Lower Total Cost of Ownership
  • Detailed, real-time telemetry and analytics
  • Improved security with line-rate encryption
  • Faster application completion time (claim 50% improvement)

The Nexus 93180YC-FX switch we will use in this example is 1RU in height (1.75” rack unit) for use in standard 19” equipment racks. This switch supports a total of 2.16 Terabits/sec (Tbps) of bandwidth and over 850 million packets per second (mpps). The 93180YC-FX has 48 downlink ports that can equipped with either SFP+ or SFP28 optical transceivers and each port may be configured to run at 1Gbps10Gbps or 25Gbps in Ethernet mode or at 16Gbps or 32Gbps in Fibre Channel mode.

Rack-mounted Server: Dell PowerEdge R640

Dell PowerEdge R640 switch using FluxLight optical transceivers and fiber jumper cables.

Dell’s EMC PowerEdge line includes a wide array of server models with varying amounts of processor(s) compute power, storage (RAM, SSD, Hard Drives), expansion slots, fans, power supplies, etc. The PowerEdge R640 rack server used in this example is 1RU in height. The base R640 chassis has 4 x 3.5” slots for drives and 3 PCIe slots. There are a wide range of options for processors for R640, all from Intel’s Xeon Gold and Platinum lines. The base system comes with a single hot-pluggable 495 watt power supply but may be upgraded to dual (1+1) redundant 750 watt supplies.

Dual-SFP+ Port 10G NIC: Broadcom 57810

Broadcom 57810 NIC using SFP-10G-SR-FL optical transceivers and fiber patch cables.

The Broadcom 57810 is a low-profile PCIe (PCI Express) network interface card equipped with two SFP+ slots. Either or both of these slots may be equipped with any of a wide selection of optical transceiver modules, ranging from short reach multimode (10GBASE-SR) to very long reach singlemode (80km 10GBASE-ZR). If both SFP+ slots are equipped with transceivers, with the use of IEEE 802.3ad link aggregation, a channel supporting a total of 20Gbps full-duplex is possible. Beyond the bandwidth increase, there is an improvement in fault tolerance as the two fiber jumpers can each be run over alternate routes to the host TOR switch. If one of these cables is disconnected for some reason, connectivity will be maintained just as half speed.


10GBASE-SR Optical Transceivers: FluxLight SFP-10G-SR-FL

Cisco SFP-10G-SR-FL optical transceiver |


FluxLight’s SFP-10G-SR-FL is a Cisco® compatible 10GBase SFP+ Optical Transceiver and is factory pre-programmed with all the necessary configuration data for seamless network integration. These transceivers perform identically to Cisco® original transceivers and are 100% compatible and support full hot swappable operation. The Cisco SFP-10G-SR-FL is 100% MSA (Multi-Source Agreement) compliant.


Fiber Jumper Cables: FluxLight's LC to LC Multimode Fiber Patch Cable

FluxLight LC to LC OM3 fiber optic cable |

Fluxlight carries a wide range of fiber jumper cable, with various terminations, types of fiber and lengths. Particularly well suited to the short range 10Gbps Ethernet links we are using in this the example is Fluxlight's LC to LC Multimode Fiber Patch Cable. This is duplex (2-fiber) cable with dual LC-type connectors on each end. The dual LC connector mates perfectly with the dual LC receptacles on the SFP+ optical transceivers we are using in this example.


Putting it all together

So we have the parts we need…now we have to put it all together. Where to put the TOR leaf switch? How about the top of the rack! A typical 19” equipment rack in a data center has 42 RUs of usable space to mount equipment. The Cisco switch only uses 1RU and, since each Dell R640 also uses only 1RU, theoretically you could fit 41 servers in. Usually there is a certain amount of space used for things like power supplies, fiber management panels etc. In any case, you must install a Broadcom 57810 NIC in each server and then put two Fluxlight 10GBASE-SRtransceivers into each of these NICs. Since we are running two 10Gbps links per server, two Fluxlight 10GBASE-SR modules per server must be installed in the Nexus 83180YC-FX. Since there are 48 SFP+ slots in the switch, that allows us to connect a total of 24 servers. Finally, an LC-LC OM3 duplex multimode fiber jumper must be connect to each pair of SFP+ 10G transceivers (one in the Nexus switch and the other in NIC a server). Remember, just to minimize the chance of a fiber accident disconnecting an entire server,  to route each the two fiber jumpers on each NIC to opposite sides of the rack.

Cisco Nexus 93180YC-FX to Dell R640-01 with SFP-10G-SR-FL fiber optic transceivers and FluxLight fiber jumper cables.

Platform Support for FluxLight's Cisco SFP-10G-SR-FL

FluxLight's Cisco SFP-10G-SR-FL is supported on a wide range of Cisco equipment.

7600 Series Router Integrated Services Routers
Aggregation Services Routers ISR4000
ASR1000 ME Ethernet Switches
ASR901 C6500
ASR903 ME3600X
ASR920 ME3800X
Blade Switches Network Convergence System
Carrier Routing System IE5000
Catalyst Switches NCS4200
C2360 NCS5000
C2960L NCS540
C2960S NCS5500
C2960X NCS6000
C2960XR Nexus Switches
C3560 N2000
C3560CX N3000
C3560X N3500
C3650 N4000
C3750 N5000
C3750X N6000
C3850 N7000
C4500 N9200
C4500X N9300
C4900 N9500
C4900M Unified Computing System
C6800 UCSB
C9300 UCSC
C9400 Wireless Controller
Firewalls AIRCTU





FluxLight's Full Line of 10GBase-SR Transceivers


Alcatel-Lucent iSFP-10G-SR-FL
Alcatel-Lucent iSFP-10G-SR-FLT
Allied Telesis AT-SP10SR-FL
Arista SFP-10G-SR-A-FL
Arista SFP-10G-SR-A-FLT
Aruba J9150D-FL
Aruba J9150E-FL
Aruba SFP-10GE-SR-FL
Avaya/Nortel AA1403015-E6-FL
Brocade-Foundry 10G-SFPP-SR-FL
Ciena XCVR-S00Z85-FL
Cisco SFP-10G-SR-FL
Cisco SFP-10G-SR-FLT
Cisco SFP-10G-SR-S-FL
Cisco SFP-10G-SR-S-FLT
Cisco SFP-10G-SR-X-FL
Dell 407-BBGM-FL
Dell 407-BBOJ-FL
Dell 407-BBOU-FL
Dell 407-BBPC-FL
Dell 407-BBRJ-FL
Dell 407-BBVJ-FL
Dell 407-BBZM-FL
Dell 407-BCBH-FL
Dell 407-BCBN-FL
D-Link DEM-431XT-FL
Enterasys 10GB-SR-SFPP-FL
Extreme 10301-FL
F5  OPT-0016-00-FL
Finisar FTLX1772M3BCL-FL
Finisar FTLX8574D3BCL-FL
Finisar FTLX8574D3BCV-FL
Finisar FTLX8574D3BNL-FL
Force10 GP-10GSFP-1S-FL
Gigamon SFP-532-FL
HP J9150A-FL
IBM 46C3447-FL
Juniper EX-SFP-10GE-SR-FL
Juniper EX-SFP-10GE-SR-FLT
Juniper QFX-SFP-10GE-SR-FL
Juniper SFPP-10GE-SR-FL
Juniper SFPP-10GE-SR-FLT
Juniper SFPP-10G-SR-C-FL
Juniper SFPP-10G-SR-C-FLT
Juniper SRX-SFP-10GE-SR-FL
Meraki MA-SFP-10GB-SR-FL
Netgear AXM761-FL
Nokia 3HE04824AA-FL
Nokia 3HE04824AA-FLT
Nokia 3HE04824AA-IND-FL
Nokia 3HE09326AA-FL
Nokia 3HE09326AA-IND-FL
Sonicwall 01-SSC-9785-FL




The following is a list of Finisar Corporation patents Fluxlight has licensed. This licensure recognizes and compensates Finisar for their intellectual property. The SFP-10G-SR-FL, like all Fluxlight optical transceivers, is covered by this license agreement. Therefore, Fluxlight customers can rest assured that all products purchased are fully licensed, and our customers are under no potential liability that may ensue from the use of unlicensed optical transceiver products.

U.S. Patent Numbers: 7,184,668 (System and method of protecting eye safety during operation of a fiber optic transceiver), 7,079,775 (Integrated memory mapped controller circuit for fiber optics transceiver), 6,957,021 (Optical transceiver with memory mapped locations), 7,058,310 (System and method for protecting eye safety during operation of a fiber optic transceiver), 6,952,531 (System and method for protecting eye safety during operation of a fiber optic transceiver), 7,162,160 (System and method for protecting eye safety during operation of a fiber optic transceiver), 7,050,720 (Integrated memory mapped controller circuit for fiber optics transceiver)

Original Equipment Manufacturer (OEM) names may be registered trademarks of the respective OEM, and the OEM has neither authorized nor sponsored the use of its trademark or trade name. All OEM names are used for cross reference/comparative purposes only.

Limited Lifetime Warranty

Fluxlight provides a non-transferable serviceable lifetime warranty to the purchaser of Fluxlight hardware product purchased from Fluxlight or an authorized Fluxlight reseller. Fluxlight warrants to the original end customer of its products specified below that its products are free from defects in material and workmanship affecting form, fit, and function. All such products sold will work in the application specified at the time of purchase and will meet the datasheet specifications as found on Fluxlight’s Web site or otherwise provided by Fluxlight. Any claim alleging that any product fails to conform to the foregoing may be made only by the customer who purchased such product and only while such customer owns such product and while the product remains within the serviceable lifetime period. Fluxlight, at its option, will repair, replace, or provide a credit or refund of either the original purchase price or fair market value, whichever is lower, of any product that is determined by Fluxlight to be defective. Some systems that use Fluxlight products may be allowed to operate outside of the system manufacturer’s published settings and Fluxlight does not cover failure in these circumstances. This warranty covers only defects arising under normal use and do not include malfunctions or failures resulting from misuse, abuse, neglect, alteration, problems with electrical power, usage not in accordance with product instructions, acts of nature, or improper installation or improper operation or repairs made by anyone other than Fluxlight or an Fluxlight authorized third-party service provider. Fluxlight reserves the right to substitute functionally equivalent new or serviceable used parts.

Form more information please see our warranty page.