• Silver-colored arista qsfp-100g-cwdm4 transceiver modules with blue handles and metal connectors for 2km smf use
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Arista

Arista QSFP-100G-CWDM4 | 100G CWDM4 QSFP28 Transceiver, 2km, Dual-Rate SMF

Arista QSFP-100G-CWDM4 | 100G CWDM4 QSFP28 Transceiver, 2km, Dual-Rate SMF

QSFP-100G-CWDM4

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Description

The Arista QSFP-100G-CWDM4 is a 100GBASE-CWDM4 QSFP28 transceiver designed for high-density data centre and enterprise core deployments over duplex single-mode fibre (SMF) at distances up to 2km. Supporting 100G/40G dual-rate operation, this module provides flexible interoperability across mixed-speed infrastructure, making it ideal for network upgrades and spine-leaf architectures where investment protection is critical. CWDM4 technology uses four CWDM wavelengths across two fibres, reducing cabling complexity compared to parallel optics solutions.

Compatible with Arista 7000-series switches and platforms that accept standard QSFP28 form-factor modules, the QSFP-100G-CWDM4 supports LC duplex connectors and conforms to the CWDM4 MSA standard for broad multi-vendor interoperability. Low power consumption and a compact QSFP28 form factor make this transceiver well suited to high-port-density deployments. Available now at iptrading.com.au — competitive prices and local support.

Features

- 100G/40G dual-rate operation for seamless network migration and investment protection
- CWDM4 MSA compliant — broad multi-vendor interoperability
- Duplex SMF connectivity eliminates need for MPO/parallel fibre infrastructure
- Four CWDM wavelengths (1271–1331nm) across two fibres reduce cabling complexity
- Up to 2km reach — suitable for intra-campus and data centre interconnect
- QSFP28 form factor supports high-port-density switch deployments
- Low power consumption optimised for large-scale data centre environments
- LC duplex interface compatible with standard SMF patch panels and cabling plants

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Form factor: QSFP28
- Data rate: 100G / 40G dual-rate
- Standard: 100GBASE-CWDM4 (CWDM4 MSA compliant)
- Fibre type: Duplex single-mode fibre (SMF)
- Connector type: LC duplex
- Maximum reach: up to 2km
- Wavelengths: 4x CWDM lanes (1271nm, 1291nm, 1311nm, 1331nm)
- Modulation: NRZ, 25 Gbps per lane (100G mode)
- Operating temperature: 0°C to 70°C (commercial)
- Compatible platform: Arista 7000-series and QSFP28-capable switches

FAQs

Q: What fibre type and connector does the QSFP-100G-CWDM4 require?
A: This transceiver uses duplex single-mode fibre (SMF) with LC duplex connectors. It is not compatible with multimode fibre.

Q: Does this module support 40G as well as 100G?
A: Yes. The QSFP-100G-CWDM4 is a dual-rate module supporting both 100G and 40G operation, making it useful for migration scenarios and mixed-speed networks.

Q: What is the maximum transmission distance?
A: The module supports reaches of up to 2km over duplex SMF under standard operating conditions.

Q: Is this transceiver compatible with non-Arista switches?
A: The QSFP-100G-CWDM4 conforms to the CWDM4 MSA standard, which means it is designed for broad interoperability. However, third-party switch compatibility should be verified against your platform's supported optics list, as some vendors restrict use to coded transceivers.

Q: Can I purchase this transceiver in Australia through IP Trading?
A: Yes. The Arista QSFP-100G-CWDM4 is available now at iptrading.com.au with competitive pricing and local Australian support for business customers.

Q: How does CWDM4 differ from SR4 or PSM4 optics for 100G?
A: CWDM4 uses four CWDM wavelengths over two fibres (duplex SMF), while SR4 uses parallel multimode fibre (MPO) and PSM4 uses parallel SMF (MPO). CWDM4 is preferred when duplex SMF infrastructure already exists and longer reach than SR4 is needed, without the cost of LR4.

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