QSFP-100G-DZ2-39 Arista QSFP28 100GbE Transceiver Module

Arista QSFP28 100GbE Transceiver

The Arista QSFP-100G-DZ2-39 is a high-performance QSFP28 transceiver designed for ultra-fast data transmission in modern networking infrastructures. This device ensures reliable connectivity and scalability for enterprises and data centers.

General Specifications

• Manufacturer: Arista Networks
• Part Number: QSFP-100G-DZ2-39
• Device Type: Optical Transceiver

Technical Highlights

Performance Metrics

• Data Rate: 100 Gigabits per second
• Form Factor: QSFP28 (Quad Small Form-factor Pluggable)
• Wavelength: 1310 nm (DWDM channel for extended deployments)

Transmission Capabilities

• Maximum Reach: Up to 40 km (24.8 miles) over Single-Mode Fiber (SMF)
• Optical Interface: Duplex LC connector

Environmental Conditions

• Operating Temperature: 0°C to 70°C (Commercial range)
• Storage Temperature: -40°C to 85°C

Compliance and Standards

Industry Certifications

• Standard: Fully compliant with SFF-8636 specifications
• Application: Optimized for high-density networking environments
• Interoperability: Ensures seamless integration with compatible systems

QSFP-100G-DZ2-39 QSFP28 100GbE Transceiver Overview

The Arista QSFP-100G-DZ2-39 QSFP28 100GbE Transceiver Module category represents high-performance optical connectivity solutions engineered for modern data center, enterprise core, and cloud-scale networking environments. Designed for seamless interoperability with switching platforms from :contentReference[oaicite:0]{index=0}, this QSFP28 optical transceiver module delivers reliable 100 Gigabit Ethernet throughput while supporting the scalability and low-latency requirements of next-generation network architectures. As part of the 100GbE optical ecosystem, the QSFP-100G-DZ2-39 module is optimized for high-density deployments, energy-efficient operations, and standards-based compatibility across fiber infrastructures.

Within this category, the QSFP28 100GbE transceiver modules are engineered to provide deterministic performance across diverse deployment scenarios, including spine-leaf fabrics, hyperscale data centers, campus aggregation layers, and high-capacity inter-switch links. These modules combine compact mechanical design with advanced optical signaling technologies to enable robust long-distance or data center interconnect connectivity depending on the specific wavelength and reach profile.

QSFP28 Form Factor and Mechanical Design

Compact High-Density Architecture

The QSFP28 form factor is a critical enabler of 100GbE network density. By supporting four independent 25 Gbps electrical lanes aggregated into a single 100 Gbps link, the module provides significant bandwidth within a small physical footprint. Compared to legacy CFP-based optics, QSFP28 modules dramatically reduce front-panel space requirements and overall system power consumption, allowing data center operators to maximize port density in 1U and 2U switch chassis.

The Arista QSFP-100G-DZ2-39 QSFP28 100GbE Transceiver Module adheres to Multi-Source Agreement mechanical standards, ensuring physical compatibility across supported hardware platforms. The hot-pluggable design allows in-service insertion and removal, facilitating rapid maintenance and upgrades without disrupting network operations.

Connector Interface and Fiber Compatibility

Depending on the specific optical profile within the DZ2-39 designation, the module may utilize duplex LC connectors or MPO interfaces for fiber connectivity. Duplex LC connectors are typically associated with single-mode long-reach applications, while MPO connectors are common in parallel multimode or short-reach deployments. The optical interface supports high-precision alignment and stable signal transmission over designated fiber types.

Compatibility with standard single-mode fiber compliant with ITU-T G.652 or multimode fiber types such as OM3 and OM4 enables flexible integration into existing structured cabling infrastructures. This adaptability simplifies network upgrades and expansions without extensive re-cabling efforts.

100GbE Optical Signaling Technology

Four-Lane 25G Electrical Architecture

The QSFP28 transceiver module operates using four independent 25 Gbps electrical lanes compliant with CAUI-4 host interface specifications. These lanes interface directly with the switch ASIC, enabling efficient serialization and deserialization of traffic streams. Internal signal conditioning components ensure low jitter and signal integrity between host and optical engine.

The aggregated 100 Gbps throughput is achieved by multiplexing optical channels or utilizing parallel fiber transmission depending on the specific optical design. This architecture balances performance, reach, and power consumption for optimized operational efficiency.

Wavelength Management and Optical Multiplexing

In long-reach variants, coarse wavelength division multiplexing technology is employed to transmit multiple wavelengths over a single fiber pair. Each wavelength carries a 25 Gbps data stream, and the module integrates multiplexers and demultiplexers to combine and separate optical channels with minimal crosstalk. The precise wavelength spacing ensures compatibility with standardized Ethernet optical budgets and fiber dispersion characteristics.

Advanced laser technologies, including distributed feedback lasers or electro-absorption modulated lasers, provide stable optical output across temperature variations. Integrated temperature control mechanisms maintain wavelength accuracy and output stability under varying environmental conditions.

Performance Specifications and Optical Budget

Transmit Power and Receiver Sensitivity

The Arista QSFP-100G-DZ2-39 QSFP28 100GbE Transceiver Module is designed to operate within defined optical power ranges to ensure link reliability. Transmit optical power is calibrated to meet minimum launch requirements while maintaining compliance with eye safety standards. On the receive side, high-sensitivity photodiodes convert incoming optical signals into electrical data streams with minimal bit error rates.

The optical budget accounts for fiber attenuation, connector insertion loss, and potential environmental degradation over time. Engineers can calculate precise link margins to ensure stable operation across specified distances, whether within a single data hall or across inter-building connections.

Integration with Arista Switching Platforms

EOS Compatibility and Platform Validation

The QSFP-100G-DZ2-39 transceiver module is validated for interoperability with switching systems running Arista’s Extensible Operating System, known as :contentReference[oaicite:1]{index=1}. This integration ensures seamless detection, configuration, and monitoring of optical parameters through the switch’s management interface.

Platform validation includes firmware-level compatibility checks, ensuring that digital diagnostics monitoring values are accurately reported and that alarm thresholds align with hardware expectations. This tight integration minimizes the risk of unsupported configurations and enhances operational confidence.

Predictive Maintenance and Lifecycle Optimization

Long-term analysis of digital diagnostics data supports predictive maintenance strategies. Trends in optical power levels or temperature readings can indicate gradual component wear. By identifying modules nearing operational limits, organizations can schedule replacements during planned maintenance windows rather than reacting to unexpected failures.

Enterprise Core and Campus Aggregation

Enterprises deploying high-speed campus backbones leverage 100GbE transceivers to interconnect core switches and aggregation layers. The module’s reach capabilities enable connectivity between data centers, remote buildings, or metropolitan campus sites using single-mode fiber infrastructure.

Migration from 10GbE or 40GbE to 100GbE can be achieved incrementally by upgrading uplink ports with QSFP28 modules, preserving existing switching investments while expanding bandwidth capacity.

Multi-Vendor Network Environments

Although optimized for Arista switching platforms, standards compliance facilitates deployment in environments where multi-vendor interoperability is required. Engineers can design networks that integrate diverse hardware ecosystems while maintaining consistent 100GbE optical performance.