• Juniper QSFP-100G-LR4-D Compatible 100G QSFP28 Optical Transceiver LR4 | HYTOPTODEVICE
  • Front LC port view of Juniper compatible 100G QSFP28 Optical Transceiver LR4 for QSFP-100G-LR4-D hardware replacement
  • Side profile MSA-certified 100G QSFP28 Optical Transceiver LR4 for Juniper data center bulk upgrade projects
  • EML laser integrated low-loss 100G QSFP28 Optical Transceiver LR4 for Juniper cross-data-center DCI 10km interconnection
  • EML laser integrated low-loss 100G QSFP28 Optical Transceiver LR4 for Juniper cross-data-center DCI 10km interconnection
  • DDM-monitoring supported 100G QSFP28 Optical Transceiver LR4 internal chip close-up for Junos OS real-time diagnostic display
  • Juniper QSFP-100G-LR4-D Compatible 100G QSFP28 Optical Transceiver LR4 | HYTOPTODEVICE
  • Front LC port view of Juniper compatible 100G QSFP28 Optical Transceiver LR4 for QSFP-100G-LR4-D hardware replacement
  • Side profile MSA-certified 100G QSFP28 Optical Transceiver LR4 for Juniper data center bulk upgrade projects
  • EML laser integrated low-loss 100G QSFP28 Optical Transceiver LR4 for Juniper cross-data-center DCI 10km interconnection
  • EML laser integrated low-loss 100G QSFP28 Optical Transceiver LR4 for Juniper cross-data-center DCI 10km interconnection
  • DDM-monitoring supported 100G QSFP28 Optical Transceiver LR4 internal chip close-up for Junos OS real-time diagnostic display

Juniper QSFP-100G-LR4-D Compatible 100G QSFP28 Optical Transceiver LR4 | HYTOPTODEVICE

Shop HYTOPTODEVICE 100G QSFP28 Optical Transceiver LR4 fully compatible with Juniper QSFP-100G-LR4-D. 103.1Gbps over 4 × 25.78Gbps NRZ lanes on a 1295–1309nm LAN-WDM grid, stable 10km SMF transmission with LC duplex connector, full DDM monitoring, pre-flashed Juniper firmware, plug-and-play for MX/QFX/EX series Junos OS switches and routers.Support small sample testing, OEM private labeling, bulk wholesale for global import distributors and enterprise end users.
NO. Brand  Compatible P/N Remarks
1 Cisco  QSFP-100G-LR4-S 
2 Arista Networks  QSFP-100G-LR4
3 Brocade  100G-QSFP28-LR4-LP-10KM
4 Dell  Q28-100G-LR4
5 H3C  QSFP-100G-LR4-WDM1300
6 HPE Aruba  JL310A
7 Huawei  QSFP-100G-LR4 
8 Juniper Networks  QSFP-100G-LR4-D
9 NVIDIA(Mellanox)  MMA1L10-CR
Description
HYTOPTODEVICE Juniper QSFP-100G-LR4-D Compatible 100G QSFP28 Optical Transceiver LR4 – 10km LAN-WDM Single-Mode LC Transceiver, Junos OS Certified Drop-In Replacement, Bulk Wholesale & Custom Coding Available

Product Overview

Compliant with IEEE 802.3ba and Hot-Pluggalbe QSFP28 MSA industry standards, the 100G QSFP28 Optical Transceiver LR4 is professionally engineered to replace the proprietary Juniper QSFP-100G-LR4-D module. Featuring 1295–1309nm LAN-WDM four-channel parallel transmission, duplex LC UPC interface, and premium EML laser design, it delivers stable low-BER 10km transmission over G.652/G.657 single-mode fiber. Built-in independent CDR clock recovery and comprehensive DDM real-time monitoring enables real-time tracking of optical power, temperature, and voltage status. All bulk 100G QSFP28 Optical Transceiver LR4 batches support customized Juniper EEPROM rewriting, perfectly bypassing Junos OS vendor lock-in restrictions, with fully consistent optical and electrical parameters matching original Juniper QSFP-100G-LR4-D hardware specifications.

Key Technical Specifications

Our high-quality 100G QSFP28 Optical Transceiver LR4 is strictly manufactured, optically calibrated and fully tested in accordance with Juniper QSFP-100G-LR4-D  specifications, QSFP28 MSA and IEEE 802.3ba industry standards. Each module undergoes rigorous optical, electrical and protocol compatibility verification to deliver stable, low-BER and reliable 40km long-reach transmission for Juniper MX series routers, QFX series fabric switches, and EX series enterprise core switches,. All precise technical parameter values are detailed in the below specification table for professional deployment reference.
Juniper Compatible  QSFP-100G-LR4-D Vendor Name HYTOPTODEVICE
Form Factor QSFP28 Max Data Rate 103.125Gbps (4x 25.78Gbps)
Wavelength 1295.56nm,1300.05nm,
1304.58nm,1309.14nm
Max Distance 10km
Connector Duplex LC Transmitter Type 4 x LAN WDM EML
Cable Type SMF Receiver Type PIN
Modulation (Electrical) 4x 25G-NRZ TX Power -4.3~+4.5dBm
Power Consumption < 3.5W Receiver Sensitivity < -10.6dBm
Protocols 100G Ethernet, MSA Compliant Operation Temperature 0 to 70°C (32 to 158°F)

Full Compatibility List & Supported Network Hardware

1.Native Juniper Networks Compatibility
Every HYTOPTODEVICE 100G QSFP28 Optical Transceiver LR4 undergoes 72-hour continuous traffic aging testing and real-machine verification on official Juniper Junos OS systems, achieving zero identification failure and normal DDM data display. It completely replaces the original Juniper QSFP-100G-LR4-D without manual configuration modification, providing complete test reports and acceptance documents for engineering projects.

Compatible Juniper Device Series:
  • Juniper QFX5100 / QFX5120 / QFX10000 Series Data Center Fabric Switches
  • Juniper MX960 / MX480 / MX240 / MX10003 Core Service Routers
  • Juniper EX4600 / EX9200 Series Enterprise High-End Core Switches
  • Juniper Cross-Room DCI and Storage QSFP28 100G Uplink Interfaces

2.Multi-Brand Cross Compatibility

Built strictly to industry MSA standards, HYTOPTODEVICE’s QSFP-100G-LR4-D breaks vendor lock-ins, delivering seamless interoperability across diverse network environments.

  • Open-Brand Devices (Plug-and-Play): 100% natively compatible with open-architecture brands like Ciena, Fortinet, Ubiquiti, MikroTik, D-Link, Zyxel, and more.

  • Locked-Brand Devices (Advanced Coding): Powered by our proprietary EEPROM writing technology, our modules successfully bypass vendor encryptions to ensure 100% compatibility with Cisco, H3C, Juniper, Dell, Intel, and the latest updated Arista firmware versions.

3.Free Custom EEPROM Re-Flash Service
To future-proof your investment, we offer a free firmware re-flash service. If you upgrade your switch OS or migrate the module to a different brand in the future, we will re-code it to guarantee a 100% stable link.


Primary Application Scenarios

This Juniper QSFP-100G-LR4-D compatible transceiver targets 10km long-distance transmission scenarios, supporting Huawei leaf-spine fabric construction, cross-building DCI interconnection and enterprise trunk network upgrade with consistent low-BER optical transmission performance.

  • Bulk replacement and upgrade of aging Juniper QSFP-100G-LR4-D modules for data center leaf-spine fabric networking
  • Cross-data-center DCI long-haul interconnection using 100G QSFP28 Optical Transceiver LR4 to build 10km low-loss single-mode fiber links
  • Enterprise core backbone network transformation deploying high-stability 100G QSFP28 Optical Transceiver LR4 for inter-machine room trunk transmission
  • Large campus and park network iteration with low-jitter 100G QSFP28 Optical Transceiver LR4 for remote server room 100G high-speed uplinks
  • System integrator customized coded 100G QSFP28 Optical Transceiver LR4 for multi-brand hybrid Juniper network integration projects
  • ISP edge room bandwidth expansion adopting standard-compliant 100G QSFP28 Optical Transceiver LR4 for 10km long-distance 100G optical transmission

Connectivity Solutions(Applications)

1. 100G Switch-to-Switch Interconnection
Deploy paired HYTOPTODEVICE 100G QSFP28 Optical Transceiver LR4 with G.652 single-mode fiber to build stable 10km switch-to-switch high-speed trunk links, realizing efficient traffic aggregation for Juniper data center leaf-spine architecture.

100G QSFP28 Optical Transceiver LR4 10km single-mode wiring topology for Juniper leaf spine fabric backbone interconnection

2.100G Switch-to-NIC Direct Connection

Break the distance limitation of short-range multimode modules, adopt 100G QSFP28 Optical Transceiver LR4 to realize direct high-speed uplink connection between Juniper core switches and remote server storage clusters, ensuring long-distance signal stability.

 Low-BER 100G QSFP28 Optical Transceiver LR4 long-distance link design for Juniper server cluster remote uplink transmission

3.100G Long-haul Switch Link with
Structured Cabling

Match standard single-mode structured cabling systems with 100G QSFP28 Optical Transceiver LR4 to build scalable, hierarchical long-distance network architecture for large-scale Juniper enterprise and campus network deployments.
Calibrated LAN-WDM 100G QSFP28 Optical Transceiver LR4 structured cabling solution for Juniper enterprise 100G network deployment


Feature | 100G Connectivity for Data Center


HYTOPTODEVICE Budget friendly Juniper QSFP-100G-LR4-D alternative delivers ultra-stable 100Gbps transmission with industry-leading low power consumption. Engineered for maximum reliability in high-density data center environments.



FAQ

Q1: Will deploying third-party coded 100G QSFP28 Optical Transceiver LR4 void the warranty of Juniper network switches?
A: No, it will not void your Juniper switch warranty. Legally, OEMs cannot void official device warranties merely for using qualified third-party optical transceivers, despite common vendor claims to protect profit margins. All HYTOPTODEVICE 100G QSFP28 Optical Transceiver LR4 strictly follow MSA and Juniper protocol standards, causing no hardware or software conflicts, fully safeguarding your original device warranty while cutting procurement costs.

Q2: Are optical attenuators required for 1km and 2km ultra-short single-mode links using Juniper-compatible 100G QSFP28 Optical Transceiver LR4?
A: It depends on the module’s maximum receiving power (Pin max) rating. For short 1–2km single-mode spans, if the transmit power of our calibrated 100G QSFP28 Optical Transceiver LR4 exceeds the module’s maximum Rx threshold, you must deploy a 3dB or 5dB fixed optical attenuator. This effectively prevents receiver saturation, signal distortion and port damage to ensure stable Juniper link operation.

Q3: What is the standard optical link budget value of factory-calibrated 100G QSFP28 Optical Transceiver LR4 for 10km Juniper fiber links?
A: Equipped with high-precision industrial optical components, HYTOPTODEVICE 100G QSFP28 Optical Transceiver LR4 delivers a standard optical link budget of 6.3dB to 8.5dB. This sufficient loss margin fully offsets typical fiber attenuation, splicing and patch panel loss, supporting ultra-stable low-BER 10km long-distance transmission for Juniper DCI and leaf-spine fabric links.

Q4: Why do EML-based 100G QSFP28 Optical Transceiver LR4 run warmer than short-range SR4 and CWDM4 optical modules?
A: Short-range SR4 and CWDM4 modules adopt low-power optical designs for near-distance transmission, while HYTOPTODEVICE 100G QSFP28 Optical Transceiver LR4 integrates professional EML lasers and built-in MUX/DEMUX wavelength multiplexing components. These core components require higher driving power to maintain error-free 10km long-haul LAN-WDM transmission, resulting in normal, safe slightly higher operating temperatures on Juniper high-density switch ports.

Q5: How much latency overhead does RS-FEC enablement bring to standard 100G QSFP28 Optical Transceiver LR4 fiber links?
A: Enabling RS-FEC error correction on HYTOPTODEVICE 100G QSFP28 Optical Transceiver LR4 links adds a minimal latency overhead of 100 to 250 nanoseconds. This tiny delay is critical for latency-sensitive high-frequency trading (HFT) environments but is completely negligible and unnoticeable for conventional Juniper enterprise data center and campus network traffic.

Q6: How to utilize DOM monitoring data of 100G QSFP28 Optical Transceiver LR4 to diagnose dirty connector-induced packet loss?
A: Our 100G QSFP28 Optical Transceiver LR4 supports real-time full DOM diagnostic tracking for optical power and signal status. A typical symptom of dirty LC connectors, bent fibers or poor splicing is normal local Tx power paired with significantly dropped remote Rx power. You can quickly locate physical layer attenuation faults and fix intermittent packet loss on Juniper links via this effective data comparison method.

Q7: Why choose 4-lane LR4 100G QSFP28 Optical Transceiver LR4 over single-lambda 100G LR1 modules for Juniper network upgrades?
A: HYTOPTODEVICE 100G QSFP28 Optical Transceiver LR4 features a mature 4×25G NRZ multi-lane architecture, delivering native plug-and-play compatibility with all legacy and modern Juniper 100G switches. In contrast, single-lambda 100G LR1 modules adopt 1×100G PAM4 modulation, requiring additional gearbox hardware that older Juniper devices cannot natively decode, bringing higher deployment costs and compatibility risks.

Q8: What professional cleaning tools are suitable for LC duplex ports of Juniper-matched 100G QSFP28 Optical Transceiver LR4?
A: To maintain long-term low-loss transmission performance of our Juniper-compatible 100G QSFP28 Optical Transceiver LR4, we strongly recommend two professional tools: a standard 1.25mm one-click fiber cleaning pen and a lint-free cassette cleaner. Both tools thoroughly remove dust, oil stains and residual impurities from LC duplex ports, effectively avoiding signal attenuation, packet loss and link failure for long-term Juniper network operation.

Q9: How to identify counterfeit or refurbished OEM 100G QSFP28 Optical Transceiver LR4 modules for Juniper devices?
A: You can accurately identify inferior counterfeit and refurbished modules through dual physical and data verification. Physically, check for blurry label printing, scratched casings and rough craftsmanship. Digitally, verify module runtime data and serial numbers via Juniper CLI DOM monitoring, and cross-check with official OEM databases. HYTOPTODEVICE modules feature factory-precise labeling and complete traceable data to avoid counterfeit risks.

Q10: How to read A0h/A2h internal memory map of 100G QSFP28 Optical Transceiver LR4 to confirm firmware adaptation for Juniper?
A: Our MSA-compliant 100G QSFP28 Optical Transceiver LR4 supports standard I2C serial interface data access. You can directly read the module’s A0h/A2h internal memory map, view complete firmware version and vendor coding information by running the Juniper diagnostic CLI command: show system internal transceiver nvram, quickly verifying full Junos OS compatibility and firmware integrity.

Q11: Why do generic 100G QSFP28 Optical Transceiver LR4 experience link flapping under switch chassis vibration and high airflow?
A: Generic low-quality modules adopt poorly toleranced casings and weak latching mechanisms, leading to loose fixation in switch port cages. When facing chassis vibration and high airflow, loose contact causes random link flapping and disconnection. HYTOPTODEVICE 100G QSFP28 Optical Transceiver LR4 uses precision-machined housing and reinforced metal locking structures, achieving tight port fixation and excellent anti-vibration and anti-interference performance for stable Juniper network operation.

Q12: Can optical line amplifiers extend the transmission distance of standard 100G QSFP28 Optical Transceiver LR4 to 20km or 30km?
A: No, optical line amplifiers cannot extend the reach of standard 100G QSFP28 Optical Transceiver LR4 to 20–30km. The module’s native LAN-WDM grid suffers severe chromatic dispersion beyond 10km, causing irreversible signal distortion that amplification cannot repair. For 20km to 30km long-haul transmission on Juniper networks, HYTOPTODEVICE recommends professional 100G ER4/ZR4 optical modules for error-free long-distance transmission.

Brand & Service Advantage 

HYTOPTODEVICE is a professional global supplier of high-compatibility optical transceivers, focusing on the R&D and bulk supply of Juniper QSFP-100G-LR4-D compatible 100G QSFP28 Optical Transceiver LR4. Every product undergoes strict optical parameter calibration, 72-hour high-low temperature aging testing, and real-machine interoperability verification on Juniper Junos OS platforms. We provide free sample testing, exclusive custom Juniper EEPROM coding, OEM private label customization, fast global logistics, and 5-year factory warranty service. Our compatible 100G QSFP28 Optical Transceiver LR4 helps data center operators and system integrators reduce procurement costs by 60%–70% compared with original Juniper modules, while maintaining industrial-grade 10km long-distance transmission stability and full DDM diagnostic compatibility.

Why Network Engineers Choose HYTOPTODEVICE

HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.

  • Up to 70% cost savings vs OEM, transparent pricing & flexible bulk rates, supported quality returns
  • 100% real-device compatible with Cisco, Huawei,Dell,Juniper, and Arista
  • ISO 9001:2015 Shenzhen factory, full lineup: 1.25G/10G/25G/40G/100G/200G/400G/800G/1.6T transceivers
  • Ample stock, fast global DHL/FedEx shipping in 3–5 working days
  • Free pre-sales engineering support for custom EEPROM  & private label firmware
  • Real switch test videos available for pre-purchase review; inspection & shipping videos provided per order 


“Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia

Quality Certification & Compliance

 At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, our processes ensure global compliance and reliability.

We adhere to rigorous standards for our SFP modules and network solutions:

  • ISO 9001: Certified quality management and production consistency.

  • CE & FCC: Fully compliant for seamless Global Market Access.

  • RoHS: Committed to environmental responsibility and hazardous material control.

  • Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.

Certified Quality. Global Standards. Guaranteed Performance.




Rigorous Industrial Product Testing

   hytoptodevice check device and equiptment for network optical transceiver module

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  • Juniper QSFP-100G-LR4-D Compatible 100G QSFP28 Optical Transceiver LR4 | HYTOPTODEVICE
  • Front LC port view of Juniper compatible 100G QSFP28 Optical Transceiver LR4 for QSFP-100G-LR4-D hardware replacement
  • Side profile MSA-certified 100G QSFP28 Optical Transceiver LR4 for Juniper data center bulk upgrade projects
  • EML laser integrated low-loss 100G QSFP28 Optical Transceiver LR4 for Juniper cross-data-center DCI 10km interconnection
  • EML laser integrated low-loss 100G QSFP28 Optical Transceiver LR4 for Juniper cross-data-center DCI 10km interconnection
  • DDM-monitoring supported 100G QSFP28 Optical Transceiver LR4 internal chip close-up for Junos OS real-time diagnostic display

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