In which applications is the CFP-40G-LR4= commonly used?

It is ideal for data center interconnects, metro networks, enterprise backbone links, and high-performance computing clusters.

Is the CFP-40G-LR4= hot-pluggable?

Yes. The CFP-40G-LR4= features a hot-swappable design that allows insertion and removal without powering down the host device.

What type of fiber and connector does the CFP-40G-LR4= require?

It operates over single-mode fiber (SMF-28) and uses duplex LC connectors for both transmit and receive channels.

What are the optical power specifications of the CFP-40G-LR4=?

Transmit power ranges from 0.5 dBm to 5 dBm, and receiver sensitivity is ≤ –11 dBm for error-free performance.

Which temperature range does the CFP-40G-LR4= support?

The module operates reliably in ambient temperatures from 0 °C to 70 °C (32 °F to 158 °F).

Which industry standards does the 40GBASE-LR4 CFP module comply with?

It complies with IEEE 802.3ba 40GBASE-LR4, MSA CFP, and RoHS environmental directives.

What is the typical power consumption of the CFP-40G-LR4=?

Typical power consumption is 6 W maximum, ensuring efficient operation in high-density environments.

How do I install the CFP-40G-LR4= in my switch or router?

Align the module with the CFP port, slide it in until the latch clicks, and verify the link LED for operational status.

How can I verify the CFP-40G-LR4= is functioning correctly?

Check the host system’s diagnostic interface for module status, optical power levels, and error counters to confirm proper operation.

Is the CFP-40G-LR4= compatible with DWDM systems?

No. CFP-40G-LR4= is designed for CWDM lanes and is not compatible with DWDM channel grids without external multiplexing.

What warranty and support come with the CFP-40G-LR4=?

The module carries a one-year limited warranty and is backed by technical support for installation, configuration, and troubleshooting.

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Name: 40GBASE-LR4 CFP MODULE
Brand: Cisco
SKU: CFP-40G-LR4=
Price: 2702.00 USD
Availability: InStock
Rating: 4.4 (7 reviews)

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CFP-40G-LR4= Overview

CFP-40G-LR4= is a CFP form-factor optical transceiver engineered for 40G data rates and designed to deliver long‐range connectivity over single-mode fiber. Built with LC connectors and optimized for Ethernet and Fibre Channel protocols, this module supports high-performance applications in data centers, enterprise networks, and telecom infrastructures.

CFP-40G-LR4= features a compact CFP design with officially documented physical dimensions, making it ideal for high-density deployments. Its capability to transmit data reliably over distances up to 10 km, along with proven compatibility with leading networking equipment manufacturers, ensures it meets the rigorous demands of modern network environments.

CFP-40G-LR4= price is $2,702.00, a 80.7% saving from the Cisco list price of $13,995.00. CFP-40G-LR4= is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for CFP-40G-LR4= for additional pricing. Browse the full Cisco 40G Optical Modules series or explore all Cisco products.

CFP-40G-LR4= Specifications

Product Type: Transceiver
Form Factor: CFP
Data Rate: 40G
Connector Type: LC
Wavelength: 1310nm
Transmission Distance: Long-Range
Fiber Type: Single-mode
Max Distance: 10 km
Supported Protocols: Ethernet, Fibre Channel
Network Interface: Ethernet
Power Consumption: 5.0W
Operating Temperature: 0 to 70°C
Storage Temperature: -40 to 85°C
Input Voltage: 3.3V
Compatibility: Cisco, Juniper, Huawei, Arista
Product Name: CFP-40G-LR4=
Height: 1.0 inches
Width: 2.8 inches
Depth: 3.2 inches
Weight: 0.85 lbs

Quality Certifications

To get the detailed certification, please go to the Compliance Center.

Product Comparison Table

	CFP-40G-LR4=	QSFP-40G-SR-BD=	QSFP-40G-CSR-S=	QSFP-40G-CSR4	QSFP-40G-LR4-S=
Compatibility	Cisco, Juniper, Huawei, Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco	Cisco / Juniper / Huawei / Arista
Connector Type	LC	LC	LC	LC	LC
Data Rate	40G	40G	40G	40G	40G
Depth	3.2 inches	N/A	2.85 inches	1.00 inches	N/A
Fiber Type	Single-mode	Multi-mode	Multi-mode	Multi-mode	Single-mode
Form Factor	CFP	QSFP	QSFP	QSFP	QSFP
Height	1.0 inches	N/A	0.33 inches	0.66 inches	N/A
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Max Distance	10 km	150 meters	100 meters	100 meters	10 km
Network Interface	Ethernet	Ethernet	Fiber	Fiber	Ethernet
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Power Consumption	5.0W	3.8W	3.5W	3.0W	N/A
Product Name	CFP-40G-LR4=	QSFP-40G-SR-BD=	QSFP-40G-CSR-S=	QSFP-40G-CSR4	QSFP-40G-LR4-S=
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Supported Protocols	Ethernet, Fibre Channel	Ethernet	Ethernet	Ethernet, Fibre Channel	Ethernet
Transmission Distance	Long-Range	Short-Range	Short-Range	Short-Range	Long-Range
Wavelength	1310nm	850nm	850nm	850nm	1310 nm
Weight	0.85 lbs	N/A	0.1 lbs	0.1 lbs	N/A
Width	2.8 inches	N/A	0.64 inches	0.90 inches	N/A

Reviews & Ratings

Harrison Bennett

Reliable 40G LR4 CFP providing stable 10km SMF connectivity.

Ian Bradley

Strong long-range optical performance across core links.

Jonas Reed

Consistent signal levels and smooth deployment.

Kyle Bennett

Maintained full 40G throughput over extended fiber runs.

Logan Murphy

Enterprise-grade optics with predictable results.

Miles Harper

Dependable backbone connectivity solution.

Noah Bennett

Stable and efficient long-haul 40G module.

Questions & Answers

What is the CFP-40G-LR4=?

The CFP-40G-LR4= is a standards-compliant 40GBASE-LR4 CFP optical transceiver module designed for 40 Gb/s Ethernet over single-mode fiber.

What is the maximum transmission distance of the CFP-40G-LR4=?

The CFP-40G-LR4= supports a maximum link length of 10 km on ITU-T G.652 single-mode fiber.

Which wavelengths does the 40GBASE-LR4 CFP module use?

It uses four CWDM lanes at 1271 nm, 1291 nm, 1311 nm, and 1331 nm for full 40 Gbps transmission.

What data rate does the CFP-40G-LR4= support?

The module provides an aggregate data rate of 40.3125 Gbps, compliant with IEEE 802.3ba 40GBASE-LR4 specifications.

Related Searches Cisco 40G Optical Modules

CFP-100G-LR4=CFP-40G-FR=QSFPP-40GBASE-LR4 QSFP-40GE-LR4 CFP-40G-SR4=QSFPP-40GBASE-LR4-C QSFP-40GE-LR4-S QSFP-40GE-LR4-C

CFP-40G-LR4= Overview

CFP-40G-LR4= price is $2,702.00, a 80.7% saving from the Cisco list price of $13,995.00. CFP-40G-LR4= is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for CFP-40G-LR4= for additional pricing. Browse the full Cisco 40G Optical Modules series or explore all Cisco products.

CFP-40G-LR4= Specifications

Product Type

Transceiver

Form Factor

CFP

Data Rate

40G

Connector Type

Wavelength

1310nm

Transmission Distance

Long-Range

Fiber Type

Single-mode

Max Distance

10 km

Supported Protocols

Ethernet, Fibre Channel

Network Interface

Ethernet

Power Consumption

5.0W

Operating Temperature

0 to 70°C

Storage Temperature

-40 to 85°C

Input Voltage

3.3V

Compatibility

Cisco, Juniper, Huawei, Arista

Product Name

CFP-40G-LR4=

Height

1.0 inches

Width

2.8 inches

Depth

3.2 inches

Weight

0.85 lbs

Product Comparison Table

	CFP-40G-LR4=	QSFP-40G-SR-BD=	QSFP-40G-CSR-S=	QSFP-40G-CSR4	QSFP-40G-LR4-S=
Compatibility	Cisco, Juniper, Huawei, Arista	Cisco / Juniper / Huawei / Arista	Cisco / Juniper / Huawei / Arista	Cisco	Cisco / Juniper / Huawei / Arista
Connector Type	LC	LC	LC	LC	LC
Data Rate	40G	40G	40G	40G	40G
Depth	3.2 inches	N/A	2.85 inches	1.00 inches	N/A
Fiber Type	Single-mode	Multi-mode	Multi-mode	Multi-mode	Single-mode
Form Factor	CFP	QSFP	QSFP	QSFP	QSFP
Height	1.0 inches	N/A	0.33 inches	0.66 inches	N/A
Input Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Max Distance	10 km	150 meters	100 meters	100 meters	10 km
Network Interface	Ethernet	Ethernet	Fiber	Fiber	Ethernet
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C	0 to 70°C
Power Consumption	5.0W	3.8W	3.5W	3.0W	N/A
Product Name	CFP-40G-LR4=	QSFP-40G-SR-BD=	QSFP-40G-CSR-S=	QSFP-40G-CSR4	QSFP-40G-LR4-S=
Product Type	Transceiver	Transceiver	Transceiver	Transceiver	Transceiver
Storage Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Supported Protocols	Ethernet, Fibre Channel	Ethernet	Ethernet	Ethernet, Fibre Channel	Ethernet
Transmission Distance	Long-Range	Short-Range	Short-Range	Short-Range	Long-Range
Wavelength	1310nm	850nm	850nm	850nm	1310 nm
Weight	0.85 lbs	N/A	0.1 lbs	0.1 lbs	N/A
Width	2.8 inches	N/A	0.64 inches	0.90 inches	N/A

Questions & Answers

What is the CFP-40G-LR4=?

The CFP-40G-LR4= is a standards-compliant 40GBASE-LR4 CFP optical transceiver module designed for 40 Gb/s Ethernet over single-mode fiber.

What is the maximum transmission distance of the CFP-40G-LR4=?

The CFP-40G-LR4= supports a maximum link length of 10 km on ITU-T G.652 single-mode fiber.

Which wavelengths does the 40GBASE-LR4 CFP module use?

It uses four CWDM lanes at 1271 nm, 1291 nm, 1311 nm, and 1331 nm for full 40 Gbps transmission.

What data rate does the CFP-40G-LR4= support?

The module provides an aggregate data rate of 40.3125 Gbps, compliant with IEEE 802.3ba 40GBASE-LR4 specifications.