What exact patch cord type do we need to connect two building main distribution frames 22km apart?

You will need a standard duplex LC single-mode fiber OS1 or OS2 patch cable operating at the 1310nm wavelength.

How are these optics packaged to prevent static or dust damage during international transit?

Each transceiver is individually sealed inside an anti-static ESD bag with protective rubber dust caps installed over the LC optical ferrules.

Can we check real-time optical power levels remotely while monitoring cell tower backhaul links?

Yes, the built-in Digital Optical Monitoring (DOM) lets you view live Tx/Rx power and temperature levels directly in your management software.

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Mellanox SFP-25GERL-31 Compatible LINK-PP 25G SFP28 1310nm 30km Duplex LC/UPC DOM SMF Optical Transceiver Module

Name: Mellanox SFP-25GERL-31 Compatible LINK-PP 25G SFP28 1310nm 30km Duplex LC/UPC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 218383
Price: 119.97 USD
Availability: InStock
Rating: 5 (12 reviews)

# 218383

Product: Mellanox SFP-25GERL-31 Compatible LINK-PP 25G SFP28 1310nm 30km Duplex LC/UPC DOM SMF Optical Transceiver Module
SKU: 218383
P/N: LS-SM3125-30C
Price: $ 139.5
Stock: 85 in Stock
Sold: 943
Product URL: https://www.l-p.com/products/494308.htm

For Order Over $1000 Get $15.00 Off , Code: Linkpp15

For Order Over $3000 Get $50.00 Off , Code: Linkpp50

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12 Reviews

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Manufacture: LINK-PP

P/N: LS-SM3125-30C

Compatible:: Cisco; LINK-PP; Arista; Brocade; FS; Generic; Mellanox

Compatible P/N:: MMA2L20-AR | 10km; MMA2L20-AR-I | 10km; SFP-25GMLR-31 | 10km; SFP-25GELR-31-I | 20km; SFP-25GERL-31 | 30km; SFP-25GERL-31-I | 30km; SFP-25GER-31 | 40km; SFP-25GER-31-I | 40km

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Mellanox SFP-25GERL-31 Compatible LINK-PP 25G SFP28 Specifications

SFP-25GERL-31 is a 25GBASE-ER SFP28 single-mode optical transceiver module that engineered for long-reach data transmission over duplex LC/UPC connections, delivering robust 25Gbps throughput at a 1310nm wavelength across distances up to 30km with integrated Digital Optical Monitoring support.

Mellanox Part Number	SFP-25GERL-31	Vendor Name	LINK-PP
Form Factor	SFP28	Max Data Rate	25.78Gbps
Wavelength	1310nm	Max Cable Distance	30km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	APD
Receiver Sensitivity	-19dBm	Operating Temperature range	0°C to +70°C
Protocols	MSA Compliant, CPRI, eCPRI	Warranty	5 Years

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Q: What exact patch cord type do we need to connect two building main distribution frames 22km apart? By L***t on 2026-02-10

A: You will need a standard duplex LC single-mode fiber OS1 or OS2 patch cable operating at the 1310nm wavelength. By admin on 2026-02-11
Q: How are these optics packaged to prevent static or dust damage during international transit? By O***e on 2025-08-08

A: Each transceiver is individually sealed inside an anti-static ESD bag with protective rubber dust caps installed over the LC optical ferrules. By admin on 2025-08-09
Q: Can we check real-time optical power levels remotely while monitoring cell tower backhaul links? By M***g on 2025-03-21

A: Yes, the built-in Digital Optical Monitoring (DOM) lets you view live Tx/Rx power and temperature levels directly in your management software. By admin on 2025-03-22

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B***k

Israel

Verified Purchase

5 .0

2026-05-02

Excellent high-performance alternative for 25km single-mode fiber links without breaking the network budget.

48 Helpful vote Comments

S***t

United States

Verified Purchase

5 .0

2026-04-15

Replaced our aging 10G LR modules with these 25G 1310nm 30km transceivers to boost bandwidth between remote network nodes. Zero compatibility hiccups on our layer-3 enterprise switches. Low power draw keeps overall rack thermal budgets happy. Very satisfied!

85 Helpful vote Comments

A***n

Philippines

Verified Purchase

5 .0

2026-02-27

Upgraded our virtualized server cluster interconnects across two remote facilities. The 25G speed jump over standard 10G is night and day, and having 30km capability gives us plenty of optical power margin on older single-mode plant lines. DOM reports live junction temperatures clearly.

104 Helpful vote Comments

D***l

Brazil

Verified Purchase

5 .0

2026-01-17

Our team purchased a batch of these 25G SFP28 optics to connect two major campus distribution buildings across a 23km fiber link. Thanks to the custom EEPROM pre-coding, the modules were recognized instantly by our core switches without triggering any port alarms or coding errors. The duplex LC interface clicked firmly into our patch panels with minimal insertion loss. Thermal performance was impressive as well, even under maximum data traffic load. For any enterprise IT department extending single-mode network reach, these transceivers deliver incredible value.

127 Helpful vote Comments

C***e

Russian Federation

Verified Purchase

5 .0

2026-01-09

Solid 1310nm 30km SFP28 module — DOM telemetry reads spot-on in our edge routing hardware.

75 Helpful vote Comments

M***z

India

Verified Purchase

5 .0

2025-12-11

Duplex LC connector locks in tight and DOM stats integrate seamlessly into our SNMP network monitoring tools.

103 Helpful vote Comments

D***z

Turkey

Verified Purchase

5 .0

2025-09-30

Recognized immediately across our aggregation switches, perfect duplex LC connection for our campus link!

59 Helpful vote Comments

M***s

Thailand

Verified Purchase

5 .0

2025-07-19

We deployed 100 of these LINK-PP 25G SFP28 30km modules across our core switch stack to bridge two facilities about 22km apart. The 1310nm laser output is steady and optical attenuation is well within margin over OS2 single-mode fiber. DOM monitoring gives accurate temperature and power readings directly in our switch OS CLI. Will definitely reorder for phase 2.

131 Helpful vote Comments

L***n

Ukraine

Verified Purchase

5 .0

2025-06-20

Zero port coding errors on our high-density top-of-rack switches—running super stable with ultra-low power consumption.

62 Helpful vote Comments

M***g

Indonesia

Verified Purchase

5 .0

2025-05-08

Solid packaging with individual antistatic shell protection. The metal latch pull-tab feels heavy-duty and operates smoothly. Pinout and internal PCB soldering look top-notch under inspection. We've had zero link drops over 60 days of continuous traffic monitoring. Excellent value for ISP core networks.

80 Helpful vote Comments

A***s

Mexico

Verified Purchase

5 .0

2025-04-28

We integrated two dozen LS-SM3125-30C transceivers into our new data center expansion to handle heavy inter-rack traffic. Operating over 19km of OS2 fiber, our received optical power remained well within safety margins with a generous 6dB cushion. The SFF-8472 digital diagnostic monitoring allows our automated software to poll accurate optical stats without manual intervention. Replacing our old, expensive OEM optics with these LINK-PP units cut our hardware upgrade costs drastically without sacrificing a single drop of network performance. A fantastic commercial-grade solution!

73 Helpful vote Comments

N***s

Japan

Verified Purchase

5 .0

2025-04-03

Best bang for the buck on long-reach 25G SMF optics; zero dropped packets after 3 weeks of heavy traffic load.

87 Helpful vote Comments