About Juniper QFX-QSFP-40G-SR4 40GBASE-SR4 QSFP+ Optical Transceiver in Bangladesh
The Juniper QFX-QSFP-40G-SR4 is a 40 Gigabit Ethernet QSFP+ optical transceiver designed for high-speed network connectivity over multimode fiber. Operating at 850nm and supporting transmission distances of up to 150 meters over multimode fiber, it is suitable for high-bandwidth data center, enterprise networking and Juniper switching environments.
Juniper identifies QFX-QSFP-40G-SR4 as a QSFP+ 40GBase-SR4 40 Gigabit Optics module. The official Juniper Hardware Compatibility Tool lists part number 740-067442, old part number 740-032986, an MPO-12 PC/UPC connector, monitoring support and digital optical monitoring. :contentReference[oaicite:2]{index=2}
Juniper QFX-QSFP-40G-SR4 Specifications & Features
| Specification | Details |
|---|
| Brand | Juniper |
| Model | QFX-QSFP-40G-SR4 |
| Part Number | 740-067442 |
| Old Part Number | 740-032986 |
| Data Rate | 40 Gigabit Ethernet |
| Form Factor | QSFP+ |
| Optical Standard | 40GBASE-SR4 |
| Wavelength | 850nm |
| Fiber Type | Multimode Fiber (MMF) |
| Maximum Distance | Up to 150m over MMF |
| Connector | MPO-12 PC/UPC |
| Monitoring | Yes |
| Digital Optical Monitoring | Yes |
| Breakout Capable | No |
| Product Type | Optical Transceiver |
Overview
The Juniper QFX-QSFP-40G-SR4 provides 40 Gigabit Ethernet connectivity using a QSFP+ optical transceiver architecture. It is designed for short-range, high-speed network links over multimode fiber and operates at an 850nm optical wavelength.
Juniper specifies the module for transmission of up to 150 meters over multimode fiber. The transceiver uses an MPO-12 PC/UPC connector and supports digital optical monitoring. :contentReference[oaicite:3]{index=3}
Buy Juniper QFX-QSFP-40G-SR4 40GBASE-SR4 Transceiver in Bangladesh
Purchase the Juniper QFX-QSFP-40G-SR4 40GBASE-SR4 QSFP+ Optical Transceiver from Datacom Technologies (BD). We supply Juniper networking hardware, optical transceivers, QSFP/QSFP+ modules, fiber networking equipment and data center connectivity products in Bangladesh with competitive pricing and technical support.
Key Features
- 40 Gigabit Ethernet connectivity
- 40GBASE-SR4 optical interface
- QSFP+ form factor
- 850nm optical wavelength
- Up to 150m transmission over multimode fiber
- MPO-12 PC/UPC connector
- Digital Optical Monitoring support
- Designed for compatible Juniper networking platforms
- Suitable for data center networking
- Suitable for high-bandwidth switch-to-switch links
40 Gigabit Ethernet Connectivity
The QFX-QSFP-40G-SR4 is designed for 40 Gigabit Ethernet network connections. Its QSFP+ form factor provides a compact optical interface for high-speed switching and data center connectivity.
40GbE connectivity is suitable for applications requiring higher bandwidth than conventional 10GbE links, including switch uplinks, aggregation, server connectivity and data center interconnection.
40GBASE-SR4 Optical Technology
The QFX-QSFP-40G-SR4 uses the 40GBASE-SR4 optical standard and operates at 850nm over multimode fiber. Juniper specifies transmission distances of up to 150 meters over MMF. :contentReference[oaicite:4]{index=4}
SR4 is intended primarily for short-range data center and enterprise fiber connections where multimode fiber infrastructure is available.
850nm Optical Wavelength
The transceiver operates at an 850nm optical wavelength. This wavelength is commonly used for short-range multimode fiber networking applications.
Juniper's official product listing specifically identifies the QFX-QSFP-40G-SR4 as an 850nm optic for up to 150m transmission over MMF. :contentReference[oaicite:5]{index=5}
Multimode Fiber Support
The QFX-QSFP-40G-SR4 is designed for multimode fiber (MMF). It is therefore appropriate for short-range data center links where compatible multimode fiber cabling is installed.
Before deployment, verify the installed fiber type, connector polarity and cable assembly against the requirements of both connected transceivers.
MPO-12 PC/UPC Connector
Juniper specifies an MPO-12 PC/UPC optical connector for the QFX-QSFP-40G-SR4. :contentReference[oaicite:6]{index=6}
The MPO interface provides the multi-fiber connection required by the 40GBASE-SR4 optical architecture. Use a compatible MPO-12 fiber assembly and ensure correct polarity when installing the link.
Digital Optical Monitoring
The QFX-QSFP-40G-SR4 supports Digital Optical Monitoring. Juniper's Hardware Compatibility Tool identifies both monitoring availability and digital optical monitoring for this optic. :contentReference[oaicite:7]{index=7}
DOM can provide useful optical operating information for supported platforms, helping network administrators monitor transceiver conditions and troubleshoot optical links.
QSFP+ Form Factor
The QFX-QSFP-40G-SR4 uses the QSFP+ form factor. QSFP+ is designed for high-density 40GbE networking and is widely used in data center switching environments.
The compact form factor allows multiple high-speed optical interfaces to be installed within compatible switching hardware.
Juniper Part Number
The official Juniper Hardware Compatibility Tool identifies the QFX-QSFP-40G-SR4 with part number 740-067442 and old part number 740-032986. :contentReference[oaicite:8]{index=8}
When purchasing or replacing an existing optic, verify the Juniper part number and compatibility with the target switch or routing platform.
Juniper Platform Compatibility
Juniper's Hardware Compatibility Tool lists QFX-QSFP-40G-SR4 across compatible Juniper platforms. The optic is documented for multiple switching and routing environments, including selected QFX, EX, ACX, MX and PTX platforms depending on the specific hardware configuration and Junos release. :contentReference[oaicite:9]{index=9}
For example, Juniper documentation lists QFX-QSFP-40G-SR4 for compatible QFX environments and identifies it on the EX9253-6Q12C and EX9253-6Q12C-M platforms. :contentReference[oaicite:10]{index=10}
Always check the current Juniper Hardware Compatibility Tool for the exact switch, line card, interface module and Junos release before installation.
Data Center Networking
The QFX-QSFP-40G-SR4 is well suited to short-distance high-speed data center links. It can be used for switch-to-switch connections, aggregation links, server connectivity and other 40GbE applications where multimode fiber is appropriate.
- Data center leaf-spine links
- Switch-to-switch connectivity
- Aggregation links
- High-bandwidth server connectivity
- Storage network connectivity
- Enterprise network uplinks
40GBASE-SR4 vs 40GBASE-LR4
| Feature |
40GBASE-SR4 |
Typical 40GBASE-LR4 |
| Fiber |
Multimode Fiber |
Single-Mode Fiber |
| Wavelength |
850nm |
1310nm |
| Typical Application |
Short-range data center links |
Longer-distance network links |
| Connector |
MPO |
Duplex LC |
| QFX-QSFP-40G-SR4 |
Yes |
No |
Installation Considerations
- Verify the target Juniper platform supports QFX-QSFP-40G-SR4.
- Use compatible multimode fiber cabling.
- Use an MPO-12 PC/UPC connector assembly.
- Verify correct fiber polarity.
- Confirm both ends of the link use compatible 40GbE optics.
- Check Junos OS and hardware compatibility before deployment.
- Keep optical connectors clean during installation.
Optical Link Reliability
Proper fiber installation is important for reliable 40GbE operation. Dust, contamination, incorrect polarity, excessive fiber loss or incompatible cabling can cause optical link failures.
Before connecting the transceiver, inspect and clean the optical interfaces using appropriate fiber-cleaning procedures.
Breakout Considerations
Juniper's current Hardware Compatibility Tool identifies the QFX-QSFP-40G-SR4 as not breakout capable. :contentReference[oaicite:11]{index=11}
Do not assume that this optic can be used as a 4x10GbE breakout optic. Where 4x10GbE connectivity is required, use the appropriate Juniper breakout optic specified for the target platform.
Enterprise Network Applications
The QFX-QSFP-40G-SR4 is suitable for high-bandwidth enterprise networking applications where 40GbE connectivity and short-range multimode fiber transmission are required.
- Data center switching
- Leaf-spine architecture
- Network aggregation
- Server-to-switch connectivity
- Storage networking
- High-performance computing networks
- Enterprise backbone links
Why Buy from Datacom Technologies (BD)?
Datacom Technologies (BD) supplies Juniper optical transceivers, QSFP/QSFP+ modules, enterprise networking equipment, fiber connectivity products and data center hardware in Bangladesh. Customers can receive competitive pricing, technical consultation, deployment assistance and nationwide delivery.
- Call/WhatsApp: +8801748173213
- Email: sales@datacom.com.bd
- Alternative Email: datacomtechnologiesbd@gmail.com
- Office: Tropical Center, 218, Dr. Kudroti Khuda Road, New Elephant Road, Dhaka-1205, Bangladesh
Frequently Asked Questions (FAQ)
Q1: What is the Juniper QFX-QSFP-40G-SR4?
It is a 40 Gigabit Ethernet QSFP+ 40GBASE-SR4 optical transceiver designed for short-range multimode fiber networking.
Q2: What is the Juniper part number?
The current Juniper part number is 740-067442. The old part number is 740-032986. :contentReference[oaicite:12]{index=12}
Q3: What data rate does it support?
The QFX-QSFP-40G-SR4 supports 40 Gigabit Ethernet. :contentReference[oaicite:13]{index=13}
Q4: What wavelength does it use?
It operates at 850nm. :contentReference[oaicite:14]{index=14}
Q5: What fiber type does it use?
It is designed for multimode fiber (MMF).
Q6: What is the maximum transmission distance?
Juniper specifies up to 150 meters over multimode fiber. :contentReference[oaicite:15]{index=15}
Q7: What connector does it use?
The optic uses an MPO-12 PC/UPC connector. :contentReference[oaicite:16]{index=16}
Q8: Does QFX-QSFP-40G-SR4 support DOM?
Yes. Juniper lists Digital Optical Monitoring support for this optic. :contentReference[oaicite:17]{index=17}
Q9: Is QFX-QSFP-40G-SR4 breakout capable?
Juniper currently identifies this specific optic as not breakout capable. :contentReference[oaicite:18]{index=18}
Q10: Is QFX-QSFP-40G-SR4 suitable for single-mode fiber?
No. It is a short-range 850nm optic designed for multimode fiber. For single-mode fiber and longer distances, a compatible Juniper LR4 optic should be selected.
Q11: Can it be used for data center switch uplinks?
Yes, where the Juniper switch and network architecture support the optic. Its 40GbE QSFP+ interface is suitable for high-bandwidth data center connectivity.
Q12: Which Juniper devices support it?
Juniper's Hardware Compatibility Tool lists the optic across compatible Juniper platforms. Exact support depends on the specific device, interface module and Junos release. :contentReference[oaicite:19]{index=19}
Q13: Is QFX-QSFP-40G-SR4 the same as 40GBASE-LR4?
No. SR4 is an 850nm multimode-fiber optic for short-range links, while LR4 is designed for longer-distance single-mode-fiber connectivity.
Q14: Where can I buy Juniper QFX-QSFP-40G-SR4 in Bangladesh?
You can contact Datacom Technologies (BD) for Juniper QSFP+ optics, optical transceivers, networking hardware and data center connectivity products.
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