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Strong LR4 performance for 40G links.
QSFPP-40GBASE-LR4
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One 40GBASE-LR4 QSFP+ pluggable module
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Name:
QSFPP-40GBASE-LR4
- Description:
- One 40GBASE-LR4 QSFP+ pluggable module
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Juniper
- GTIN:
- 849064083884
- Condition:
- Warranty:
- 3
- List Price:
$4,446.00
- Price:
$2,799.0037% off
Quantity:
1
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QSFPP-40GBASE-LR4 Overview
QSFPP-40GBASE-LR4 is a high-performance QSFP+ transceiver module engineered for 40G Ethernet applications. It supports a 40G data rate via four independent channels, uses duplex LC connectors, and is specifically designed for long-range transmission over single-mode fiber, reliably meeting the 40GBASE-LR4 standard for distances up to 10 km.
Optimized for use in data centers, enterprise networks, and telecom environments, the QSFPP-40GBASE-LR4 offers a compact form factor that ensures seamless integration into various networking platforms. Its robust design and adherence to industry protocols provide efficient, long-haul connectivity while maintaining power efficiency and operational stability in mission-critical applications.
QSFPP-40GBASE-LR4 price is $2,799.00, a 37% saving from the Juniper list price of $4,446.00. QSFPP-40GBASE-LR4 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFPP-40GBASE-LR4 for additional pricing. Browse the full category range or explore all Juniper products.
QSFPP-40GBASE-LR4 Specifications
- Product Type
- Transceiver
- Form Factor
- QSFP+
- Data Rate
- 40G
- Connector Type
- LC Duplex
- Wavelength
- 1310 nm
- Transmission Distance
- Long-Range
- Fiber Type
- Single-mode
- Max Distance
- 10 km
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Power Consumption
- 4.0W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco / Juniper / Huawei / Arista
- Product Name
- QSFPP-40GBASE-LR4
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
QSFPP-40GBASE-LR4 Use Case
Long-Haul Data Center Interconnect for Cloud Service Providers
In a multi-site cloud infrastructure spanning metropolitan areas, network architects deploy the QSFPP-40GBASE-LR4-One 40GBASE-LR4 QSFP+ pluggable module to deliver 40 Gbps links over single-mode fiber up to 10 km. This configuration ensures ultra-low latency, robust DWDM compatibility, and predictable performance for mission-critical VM migrations and real-time analytics, reducing inter-site congestion by 45% and minimizing SLA violation risks.
High-Performance Computing Cluster Backbone Upgrade
A research institution upgrading its HPC cluster backbone integrates QSFPP-40GBASE-LR4-One modules into leaf-spine switches to support sustained 40 Gbps throughput across compute nodes located in separate halls. The result is accelerated parallel processing for AI training workloads—with 30% faster data aggregation—while maintaining forward error correction and hot-swap reliability for continuous 24/7 operation.
Carrier-Grade Metro Ethernet Service Delivery
Telecom operators leverage the QSFPP-40GBASE-LR4-One 40GBASE-LR4 QSFP+ pluggable module in their central offices to provision business customers with point-to-point 40 Gbps Ethernet leased lines over existing single-mode fiber. This solution delivers guaranteed bandwidth and low jitter for SD-WAN, VoIP, and video conferencing services, driving customer satisfaction up by 20% and reducing OPEX through simplified module interoperability.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QSFPP-40GBASE-LR4 |  SRX-SFP-10GE-SR |  SFPP-10G-CT50-ZR |  XFP-10GE-LR |  SFP-1GE-T | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP+ | SFP | SFP+ | XFP | SFP |
| Data Rate | 40G | 10G | 10G | 10G | 1G |
| Connector Type | LC Duplex | LC | LC | LC | RJ45 |
| Wavelength | 1310 nm | 850nm | 1310nm | 1310nm | N/A |
| Transmission Distance | Long-Range | Short-Range | Long-Range | Long-Range | Short-Range |
| Fiber Type | Single-mode | Multi-mode | Single-mode | Single-mode | N/A |
| Max Distance | 10 km | 300 meters | 50 km | 10 km | 100 meters |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Fiber | Fiber | Fiber | Ethernet | Ethernet |
| Power Consumption | 4.0W | 1.5W | N/A | 2.5W | 3.5W |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco / Juniper / Huawei / Arista | Juniper | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista |
| Product Name | QSFPP-40GBASE-LR4 | SRX-SFP-10GE-SR | SFPP-10G-CT50-ZR | XFP-10GE-LR | SFP-1GE-T |
| Height | N/A | 0.65 inches | N/A | 0.37 in | 0.53 inches |
| Width | N/A | 0.87 inches | N/A | 0.55 in | 2.10 inches |
| Depth | N/A | 1.80 inches | N/A | 1.65 in | 0.33 inches |
| Weight | N/A | 0.09 lbs | N/A | 0.2 lbs | 0.03 lbs |
Reviews & Ratings
A
Andrew Shaw
5
Clean signal across long reach fiber.
S
Simon Fletcher
5
Worked reliably in aggregation layer.
E
Edward King
5
Easy to deploy.
V
Victor Adams
5
Good quality QSFP+.
Questions & Answers
What is the One 40GBASE-LR4 QSFP+ pluggable module (SKU: QSFPP-40GBASE-LR4)?
The QSFPP-40GBASE-LR4 is a hot-pluggable QSFP+ transceiver that delivers 40 Gbps over single-mode fiber for links up to 10 km. It is MSA-compliant, RoHS-certified, and ideal for data center and enterprise applications.
Which fiber type does the 40GBASE-LR4 QSFP+ support?
The 40GBASE-LR4 QSFP+ module supports standard single-mode fiber (SMF) in compliance with ITU-T G.652, enabling high-performance transmission over long distances.
What is the maximum transmission distance of the QSFPP-40GBASE-LR4 module?
The QSFPP-40GBASE-LR4 supports a reach of up to 10 km over single-mode fiber (SMF), making it suitable for long-haul connections in campus and metro networks.
What connector type does the 40GBASE-LR4 QSFP+ use?
This QSFP+ transceiver uses an LC duplex connector interface for SMF, providing secure, low-loss fiber coupling and easy field deployment.
Is the QSFPP-40GBASE-LR4 QSFP+ module hot-swappable?
Yes. The QSFPP-40GBASE-LR4 module is hot-pluggable, allowing insertion or removal without powering down the host system, minimizing service disruption.
Which switches and routers are compatible with the 40GBASE-LR4 QSFP+?
The QSFPP-40GBASE-LR4 is interoperable with any IEEE 802.3ba-compliant QSFP+ port, including Cisco, Juniper, Arista, HPE Aruba and Dell switches and routers that support 40 GbE.
Does the 40GBASE-LR4 QSFP+ support Digital Diagnostics Monitoring (DDM/DOM)?
Yes. The module offers real-time DDM/DOM features, providing live monitoring of optical power, temperature, voltage and bias current via I2C-compliant interface.
What is the power consumption of the QSFPP-40GBASE-LR4 module?
Typical power consumption for the 40GBASE-LR4 QSFP+ is ≤3.5 W, making it energy-efficient for high-density data center deployments.
Is the 40GBASE-LR4 QSFP+ compliant with industry standards?
Yes. The QSFPP-40GBASE-LR4 meets IEEE 802.3ba, QSFP+ MSA and RoHS 6/6 standards, ensuring broad interoperability and environmental safety.
What wavelength does the 40GBASE-LR4 QSFP+ operate at?
The module uses four LAN-WDM channels centered at 1310 nm, each carrying 10 Gbps, combined to deliver a total bandwidth of 40 Gbps.
Can I use the QSFPP-40GBASE-LR4 over existing single-mode fiber infrastructure?
Yes. The 40GBASE-LR4 QSFP+ is designed for standard single-mode fiber, enabling seamless integration with existing SMF cabling for cost-effective upgrades.
How does the 40GBASE-LR4 QSFP+ module enhance data center performance?
By delivering 40 Gbps over 10 km with low power consumption and real-time diagnostics, the QSFPP-40GBASE-LR4 optimizes bandwidth, reduces latency and simplifies network management.
What steps are involved in installing the QSFPP-40GBASE-LR4 QSFP+ module?
Align the QSFP+ module with the port guide rails, gently slide it until it clicks, then connect the LC fiber patch cords. Verify link status via host DDM or switch LEDs.
What warranty and support come with the QSFPP-40GBASE-LR4?
This module includes a one-year limited warranty, lifetime technical support and compatibility guarantees with major switch and router vendors.
How do I troubleshoot link issues with the 40GBASE-LR4 QSFP+ module?
Check fiber polarity, clean LC connectors, verify DOM readings for power and temperature, ensure host port supports 40 GbE, and update firmware or driver as needed.