• QSFP-100G-CWDM-T2  compatible Juniper Networks 100G QSFP28 transceiver, 1300nm WDM single mode 10km module
  • Juniper compatible 100G QSFP28  2KM optical module with DDM digital diagnostic monitoring
  • 100G QSFP28 duplex LC transceiver for Juniper Networks data center switch interconnection
  • Bulk supply Juniper compatible QSFP-100G-CWDM-T2 single mode optical transceiver
  • QSFP-100G-CWDM-T2  compatible Juniper Networks 100G QSFP28 transceiver, 1300nm WDM single mode 10km module
  • Juniper compatible 100G QSFP28  2KM optical module with DDM digital diagnostic monitoring
  • 100G QSFP28 duplex LC transceiver for Juniper Networks data center switch interconnection
  • Bulk supply Juniper compatible QSFP-100G-CWDM-T2 single mode optical transceiver

Juniper Networks QSFP-100G-CWDM-T2 Compatible 100G QSFP28 Transceiver | 100GBASE-CWDM4 2KM Module Bulk Wholesale | HYTOPTODEVICE

Juniper Networks QSFP-100G-CWDM-T2  compatible 100G QSFP28 transceiver with 4×25G NRZ signaling. CWDM4 wavelengths 1271/1291/1311/1331nm, 2km OS2 single-mode fiber reach via LC Douplex connector, DDM monitoring, plug-and-play for Juniper switches. Reliable bulk supply for data center leaf-spine network upgrades. Small sample testing, private labeling, custom EEPROM coding and OEM available.
NO. Brand  Compatible P/N Remarks
1 Cisco  QSFP-100G-CWDM4-S 
2 Arista Networks  QSFP-100G-CWDM4
3 Brocade  100G-QSFP28-CWDM4-2KM
4 Dell  Q28-100G-CWDM4
5 H3C  QSFP-100G-CWDM4-SM1300
6 HPE Aruba  R0Z30A 
7 Huawei  QSFP-100G-CWDM4
8 Juniper Networks  QSFP-100G-CWDM-T2 
9 NVIDIA(Mellanox)  MMA1L30-CM 
Description
Juniper Networks QSFP-100G-CWDM-T2  Compatible 100G QSFP28 Transceiver | 4×25G NRZ, 2km Single Mode Fiber

Product Overview

HYTOPTODEVICE 100G QSFP28 CWDM4 transceiver serves as a pin-compatible replacement for Juniper QSFP-100G-CWDM-T2.
It adopts four-channel CWDM wavelength architecture and transmits 100G traffic through 4×25G NRZ modulation.
This transceiver is designed for short-distance interconnections inside data centers.
It delivers stable 100G signal transmission up to 2km using OS2 single-mode fiber.
Duplex LC connectors simplify patch panel layout and routine fiber maintenance tasks.
The design complies with QSFP28 MSA and IEEE industry standards.
Built-in DDM function continuously monitors optical power, operating temperature, supply voltage and laser bias current.
Custom EEPROM coding enables smooth identification on Juniper devices without triggering unauthorized transceiver alarms.
This cost-effective transceiver suits leaf-spine architecture, inter-switch trunk links and ToR switch to server NIC uplinks.
We provide sample evaluation, personalized firmware programming and flexible bulk pricing for system integrators and data center operators.


Key Technical Specifications


Juniper Compatible QSFP-100G-CWDM-T2 Vendor Name HYTOPTODEVICE
Form Factor QSFP28 Max Data Rate 103.125Gbps (4x 25.78Gbps)
Wavelength 1271nm, 1291nm, 1311nm and 1331nm
Max Distance 2km
Connector Duplex LC/UPC Transmitter Type 4 x CWDM DML (DFB)
Cable Type SMF Receiver Type PIN
Modulation (Electrical) 4x 25G-NRZ TX Power -6.5~+2.5dBm
Power Consumption < 3.5W Receiver Sensitivity < -11.5dBm
Protocols QSFP28 MSA, SFF-8636, IEEE 802.3ba, IEEE 802.3bm, CAUI-4 Operation Temperature 0 to 70°C (32 to 158°F)

Usage Guidelines & Best Practices

  • Fiber Matching: This IR4 CWDM4 module requires OS2 single-mode fiber. Multimode fiber leads to heavy attenuation and unreliable links.
  • Port Configuration: Enable RS-FEC on Brocade switch ports. Forward error correction improves stability at the full 2km reach.
  • Installation Tips: Hot plug is supported. Avoid rough insertion to protect gold contacts. Maintain proper fiber bend radius to reduce loss.
  • Distance Limit: This model is designed for 2km links. For connections over 2km, select 100G LR4 transceivers.
  • Operating Environment: Stable operation is guaranteed at 0°C–70°C. Keep away from persistent humidity, dust or extreme heat to extend service life.


Full Compatibility List & Supported Network Hardware

1. Supported Hardware & Firmware

This CWDM4 transceiver is pre-programmed with Juniper matching identification information.
It supports plug-and-play deployment on validated Juniper hardware platforms.
It avoids persistent alarm prompts, unstable link negotiation and intermittent link flapping under mainstream Junos OS firmware releases.
Validated Juniper Device Models:
  • Juniper QFX5100, QFX5120 Data Center Switches
  • Juniper EX4600 Enterprise Core Switches
  • Juniper QFX10000 High-Density 100G Leaf-Spine Switch Series
  • All Juniper platforms equipped with standard QSFP28 100G ports

2.Cross-Brand Compatibility

The transceiver follows universal QSFP28 MSA specifications.
It supports interconnection with Cisco, Huawei, Aruba, H3C and other brand equipment within multi-vendor network environments.
It fits gradual network upgrade projects and hybrid data center expansion plans.

3.Free Value-Added Services

We offer free EEPROM rewriting and private label customization.
Pre-shipment sample validation and dedicated engineering support are available.
Large-volume orders qualify for tiered pricing to reduce overall data center hardware expenditure.

Primary Application Scenarios

  • Data Center Leaf-Spine Fabric: Short-distance 100G interconnections for Juniper Junos OS based data center architectures.
  • Inter-Switch Trunk Upgrade: Bandwidth expansion between core and aggregation switch layers.
  • Switch-to-Server Uplink: High-capacity connections from ToR switches to server and storage NICs.
  • Intra-Campus Short Links: Single-mode fiber connections within one data center or campus building.
  • Hybrid Multi-Vendor Fabric: Cost-effective 100G links deployed in mixed Juniper and third-party switch environments.

Connectivity Solutions(Applications)

1. Leaf-Spine Inter-Switch Uplink

 This 2km CWDM4 transceiver establishes low-latency leaf-spine interconnections inside data centers. It connects leaf switches and spine switches across equipment rows and cabinets in the same facility. Reliable signal performance accommodates virtualization, container workloads and heavy east-west data traffic

juniper compatible 100G QSFP28 CWDM4 transceiver deployed in leaf-spine architecture AmpCon-DC



2. 100G to 100G for Switch-Switch Interconnection

It expands trunk bandwidth between Juniper core switches and aggregation switches. It maximizes utilization of existing single-mode fiber resources and cuts extra cabling labor costs. It lifts overall network capacity to cope with growing business data demands without extra fiber laying.

100G QSFP28 CWDM4 H3C compatible module for switch to switch interconnection

3.100G FOR SWITCH-NIC

 It builds high-speed 100G uplinks between top-of-rack switches and server network interface cards. The 2km transmission range covers server farms, storage clusters and computing pods within a campus. Duplex LC interfaces support neat cable routing inside densely arranged server racks.

100G switch to server adapter card high-speed connection QSFP28 CWDM4 optical transceiver module for data center

The Core Feature 

1.Optimized Thermal Profile for Dense Racks

Power consumption stays below 3.5W. It eases thermal load inside racks fully populated with transceivers. Standard QSFP28 form factor supports high-density port layout.

Low power 100G QSFP28 CWDM4 transceiver for Juniper dense rack deployment

2. Seamless Juniper Recognition Without Warnings

Every batch completes live testing on Juniper switches. Customized EEPROM supports safe hot insertion. It operates continuously without unknown-module logs or port lockdown risks
Full round quality tested 100G CWDM4 QSFP28 module 24/7 stable operation


3.
Rigorous Pre-Shipment Validation

All modules pass optical calibration and temperature cycling screening. DDM functions are fully verified for reliable real-time monitoring. Consistent batch performance supports 24/7 production data center operation.

Full round quality tested 100G CWDM4 QSFP28 module 24/7 stable operation



FAQ

Q1: Can CWDM4 run over multimode fiber (OM3/OM4)?
A1: Standard 100G CWDM4 is engineered exclusively for OS2 single-mode fiber. OM3 and OM4 multimode fiber cannot transmit the specific CWDM wavelength grid properly, resulting in link negotiation failure or unstable connectivity. Our Juniper QSFP-100G-CWDM-T2 compatible transceiver strictly follows single-mode design standards to prevent improper fiber deployment errors.

Q2: Why is CWDM4 rated for 2km, but sometimes fails beyond 500m or 1km?
A2: The 2km rating is calculated under ideal conditions with clean OS2 fiber, premium connectors and minimal splice loss. Contaminated fiber end faces, low-grade patch cords, excessive splice joints or mismatched APC/UPC interfaces rapidly consume available optical budget. Our factory tests every CWDM4 transceiver under realistic loss conditions to reduce unexpected field link faults.

Q3: Can I connect a 100G CWDM4 on one end and a 100G LR4 on the other?
A3: CWDM4 and LR4 adopt different wavelength grids and signal modulation structures, so stable interworking cannot be realized. A normal 100G link cannot be established. We recommend deploying our matched Juniper compatible CWDM4 transceivers on both ends of the fiber path to achieve consistent link performance.

Q4: Will a Brand A CWDM4 module link up with a Brand B CWDM4 module?
A4: Cross-brand CWDM4 interworking cannot be fully guaranteed even with identical wavelength channels. Differences in transmit optical power, receiver sensitivity and internal firmware logic may trigger intermittent link drops. Our QSFP-100G-CWDM-T2 compatible transceivers maintain tight optical parameter tolerances to deliver predictable end-to-end link performance.

Q5: What is the maximum allowed optical loss (power budget) for a link?
A5: Typical power budget of 100G CWDM4 is roughly 4.5 dB. Total loss generated by fiber, connectors and splices must stay below this threshold. Our official datasheets include clear power budget references, and our engineering team can offer quick link loss calculation support before you deploy the network.

Q6: The module feels very hot to the touch. Is this normal?
A6: Mild warmth during regular operation is acceptable, yet obvious overheating usually stems from insufficient rack ventilation or dense port installation. Our CWDM4 transceivers adopt optimized thermal design and stable power control to stabilize operating temperature and cut long-term failure risks inside densely populated racks.

Q7: What are the risks behind unusually cheap CWDM4 modules?
A7: Extremely low-cost transceivers often use unqualified optical chips, skip complete calibration procedures and carry unstable EEPROM programming. They frequently trigger switch alarms, produce high bit error rates and face premature failure. Our factory completes full optical and compatibility testing, offering competitive pricing without skipping critical quality control processes.

Q8: How should I sample-test a bulk shipment of CWDM4 transceivers?
A8: Valid sampling inspection needs DDM data verification, error-free traffic testing at rated distance and compatibility verification on your target switch model. We can supply reference test environments and operation procedures. Every batch shipped from our factory contains relevant test records, and we support pre-shipment sample evaluation for bulk purchasers.

Q9: What should I do if a module freezes or stops responding on the switch?
A9: Re-seat the transceiver first and check fiber cleanliness and port configuration parameters. Confirm your switch firmware supports this transceiver model and FEC settings are consistent at both ends. If the fault persists, our technical support team helps locate coding or hardware defects and provides fast replacement solutions for defective goods.

Q10: What precautions are needed in high-humidity or coastal environments?
A10: Coastal and high-humidity environments demand regular anti-corrosion maintenance for connectors, sealed patch panels and frequent end-face cleaning to avoid salt contamination and metal oxidation. Our transceivers use sturdy metal housings and stable internal components, while proper cable management and dust caps remain necessary to extend service life.

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 optical transceiver module

100% 3rd Party Compatible
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  • QSFP-100G-CWDM-T2  compatible Juniper Networks 100G QSFP28 transceiver, 1300nm WDM single mode 10km module
  • Juniper compatible 100G QSFP28  2KM optical module with DDM digital diagnostic monitoring
  • 100G QSFP28 duplex LC transceiver for Juniper Networks data center switch interconnection
  • Bulk supply Juniper compatible QSFP-100G-CWDM-T2 single mode optical transceiver

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