Will this SFP module work with our older Cisco Catalyst and newer Arista switches without triggering any unsupported transceiver errors?

Absolutely. The LS-SM311G-40I is fully MSA compliant and extensively tested for 100% OEM compatibility with Cisco, Arista, and over 15 other major networking brands. No vendor lock-in warnings or CLI bypasses needed.

Can I use multimode fiber with this 1310nm 40km transceiver, or does it strictly require single-mode fiber (SMF)?

This specific module requires Single-Mode Fiber (SMF) to achieve the 40km transmission distance utilizing its 1310nm DFB laser. If your infrastructure relies on MMF, you will need to check out our 1000BASE-SX short-reach versions instead.

Does this 1.25G DFB transceiver support DOM/DDM and comply with IEEE 802.3ah-2004 for our telecom backhaul?

Definitely. It fully complies with IEEE 802.3ah-2004 and SFF-8472 protocols. The integrated Digital Optical Monitoring (DOM) allows your network engineers to track real-time receiver sensitivity, laser power, voltage, and internal temperature directly from your switch interface.

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Moxa SFP-1GLHXLC-T Compatible LINK-PP 1.25G SFP 1310nm 40km Duplex LC DOM SMF Optical Transceiver Module (Industrial)

Name: Moxa SFP-1GLHXLC-T Compatible LINK-PP 1.25G SFP 1310nm 40km Duplex LC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 224007
Price: 10.32 USD
Availability: InStock
Rating: 5 (26 reviews)

# 224007

Product: Moxa SFP-1GLHXLC-T Compatible LINK-PP 1.25G SFP 1310nm 40km Duplex LC DOM SMF Optical Transceiver Module (Industrial)
SKU: 224007
P/N: LS-SM311G-40I
Price: $ 12
Stock: 771 in Stock
Sold: 525
Product URL: https://www.l-p.com/products/497004.htm

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

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

For Order Over $5000 Get $100.00 Off , Code: Linkpp100

New Users: $10 Coupon for Orders , Code: linkpp2610

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Manufacture: LINK-PP

P/N: LS-SM311G-40I

Compatible:: Cisco; LINK-PP; Adtran; Alcatel-Lucent; Arista; Avaya; Brocade; Calix; Ciena; Dell; Extreme; FS; Generic; H3C; IBM; Intel; Juniper; Moxa; NVIDIA/Mellanox; Netgear

Compatible P/N:: SFP-1GLXLC-T | 10km; SFP-1GLHLC-T | 40km; SFP-1GLHXLC-T | 40km

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Moxa SFP-1GLHXLC-T Compatible LINK-PP 1.25G SFP Specifications

The Moxa SFP-1GLHXLC-T Compatible LINK-PP module is an industrial-grade 1.25G SFP transceiver engineered for optimal performance. Operating at a 1310nm wavelength over single-mode fiber, it supports transmission distances up to 40km. Featuring a duplex LC interface and full Digital Optical Monitoring, this hot-pluggable module operates reliably across a wide temperature range from -40°C to 85°C.

Moxa Part Number	SFP-1GLHXLC-T	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	1.25Gbps
Wavelength	1310nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-5 to 0dBm	RX Power	-23 to -1dBm
Receiver Sensitivity	<-23dBm	DOM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	SFF-8472 MSA Compliant, IEEE 802.3ah-2004

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Q: Will this SFP module work with our older Cisco Catalyst and newer Arista switches without triggering any unsupported transceiver errors? By J***s on 2026-04-08

A: Absolutely. The LS-SM311G-40I is fully MSA compliant and extensively tested for 100% OEM compatibility with Cisco, Arista, and over 15 other major networking brands. No vendor lock-in warnings or CLI bypasses needed. By admin on 2026-04-08
Q: Can I use multimode fiber with this 1310nm 40km transceiver, or does it strictly require single-mode fiber (SMF)? By R***k on 2026-03-14

A: This specific module requires Single-Mode Fiber (SMF) to achieve the 40km transmission distance utilizing its 1310nm DFB laser. If your infrastructure relies on MMF, you will need to check out our 1000BASE-SX short-reach versions instead. By admin on 2026-03-14
Q: Does this 1.25G DFB transceiver support DOM/DDM and comply with IEEE 802.3ah-2004 for our telecom backhaul? By D***r on 2026-03-05

A: Definitely. It fully complies with IEEE 802.3ah-2004 and SFF-8472 protocols. The integrated Digital Optical Monitoring (DOM) allows your network engineers to track real-time receiver sensitivity, laser power, voltage, and internal temperature directly from your switch interface. By admin on 2026-03-05

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M***e

Denmark

Verified Purchase

5 .0

2026-05-29

Using this 40km optical transceiver for a remote telecom base station backhaul. Plugged it into a Ciena router and the link came up instantly. Superb receiver sensitivity ensures stable long-haul Gigabit connectivity.

24 Helpful vote Comments

M***z

Chile

Verified Purchase

5 .0

2026-05-21

Perfect for our Cisco campus fiber network!

167 Helpful vote Comments

D***n

United States

Verified Purchase

5 .0

2026-03-15

Awesome OEM compatibility and fast batch deployment.

44 Helpful vote Comments

M***t

Sweden

Verified Purchase

4 .0

2026-01-25

Box was slightly crushed on arrival, but the 1.25G industrial SFP works perfectly.

189 Helpful vote Comments

S***r

Malaysia

Verified Purchase

5 .0

2025-07-22

Tested these -40 to 85°C transceivers in our factory floor switches. No packet loss!

136 Helpful vote Comments

D***z

Malaysia

Verified Purchase

5 .0

2025-07-12

Needed a reliable MSA compliant transceiver for an outdoor IP camera mesh. This industrial wide-temp SFP handles freezing nights perfectly. It synced with our mixed Alcatel environment without vendor lock-in complaints. Brilliant hardware. ❄️

160 Helpful vote Comments

A***n

Macao

Verified Purchase

5 .0

2025-07-09

Works perfectly in my home lab router.

195 Helpful vote Comments

J***s

Poland

Verified Purchase

5 .0

2025-07-03

Solid 40km transmission distance, zero drops.

82 Helpful vote Comments

R***n

Viet Nam

Verified Purchase

5 .0

2025-07-01

DOM support works flawlessly on Juniper switches.

26 Helpful vote Comments

C***a

Panama

Verified Purchase

5 .0

2025-06-27

Plug and play duplex LC SMF module.

39 Helpful vote Comments

C***l

Egypt

Verified Purchase

5 .0

2025-06-05

SFF-8472 MSA compliant indeed. The DDM readings are incredibly accurate on our Arista gear.

125 Helpful vote Comments

T***g

Argentina

Verified Purchase

5 .0

2025-06-03

We run industrial automation networks where summer enclosure temps hit 70°C. These rugged 1.25Gbps single-mode transceivers haven't flinched. The duplex LC connectors lock tight, and the 1310nm signal stays crystal clear over 20 miles.

150 Helpful vote Comments

S***z

Denmark

Verified Purchase

5 .0

2025-05-03

Upgraded our enterprise NAS network. Smooth 1G SFP integration with Netgear and H3C switches.

101 Helpful vote Comments

M***n

Brazil

Verified Purchase

5 .0