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by Arista
Product Line: Arista QSFP-100G-SR4
Product Type: Tranceiver
Original price $101.00 - Original price $158.00
Original price
$101.00 - $158.00
Current price $158.00
Title: Surplus

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Product Description

The QSFP-100G-SR4 Arista transceiver is designed for 100G Ethernet connections, supporting link lengths of up to 70m over OM3 Multimode Fiber (MMF) and 100m over OM4 MMF with an MPO-12 connector. It delivers high-bandwidth optical links by utilizing a 12-fiber parallel fiber configuration, ensuring efficient data transmission with a total loss budget of 1.9 dB. This hot-swappable module is fully compliant with IEEE 802.3bm specifications, ensuring compatibility with a wide range of networking equipment.

Key Feature for the QSFP-100G-SR4

  • What is the maximum reach of the 100GBASE SR4 QSFP Transceiver over OM4 MMF?
    The maximum reach is 100 meters over OM4 Multimode Fiber.
  • How many fibers does the MPO-12 connector utilize for the 100G optical link?
    The MPO-12 connector utilizes 12 fibers for the 100G optical link.
  • Can the 100GBASE SR4 QSFP Transceiver operate on OM3 fiber?
    Yes, it supports link lengths up to 70 meters on OM3 fiber.
  • What type of connectors does the 100GBASE SR4 QSFP Transceiver use?
    It uses MPO connectors.
  • What is the total optical loss budget for the transceiver on OM4 fiber?
    The total loss budget is 1.9 dB on OM4 fiber.
  • Is the 100GBASE SR4 QSFP Transceiver compatible with 100GBase Ethernet protocols?
    Yes, it supports the 100GBase Ethernet rate.
  • What is the range of the QSFP100 ER4-Lite without Forward Error Correction (FEC)?
    Without FEC, the reach is 30km.
  • Can the QSFP100 ER4-Lite interoperate with IEEE 100GBASE-ER4 standardized transceivers?
    Yes, it provides backward compatibility with IEEE 100GBASE-ER4 standardized transceivers.
  • What is the full reach capability of the QSFP100 ER4-Lite over single-mode fiber?
    The full reach capability is 40km on single-mode fiber.
  • Is the 100GBASE SR4 QSFP Transceiver hot-swappable?
    Yes, it is a hot-swappable input/output device compatible with Cisco QSFP 100G ports.

Product Review

The Arista QSFP-100G-SR4 transceiver excels in providing high-bandwidth optical links, supporting 100G Ethernet over multimode fiber with distances up to 70m on OM3 and 100m on OM4, making it suitable for short-range, high-speed data transmissions. However, its reliance on MPO connectors may limit flexibility in certain network environments where duplex LC connectors are preferred. Additionally, while it offers considerable reach and compatibility with IEEE standards, the necessity for FEC (Forward Error Correction) to achieve its full 40km range could be a drawback in environments where FEC is not supported or desired.


The Arista QSFP-100G-SR4 is a 100GBASE SR4 transceiver designed for high-speed data transmission over multimode fiber. It is equipped with an MPO connector and supports 100G Ethernet rates, making it suitable for data center and high-performance computing networks. This transceiver module is capable of transmitting data over distances of up to 70 meters using OM3 multimode fiber and up to 100 meters using OM4 multimode fiber, with a total loss budget of 1.9 dB. The QSFP-100G-SR4 leverages a 12-fiber parallel fiber configuration, enabling efficient and high-bandwidth optical links. It is specifically designed to support the demands of 100 Gigabit Ethernet connections, providing a reliable solution for expanding network capacity. The module's compatibility with multimode fiber types OM3 and OM4 offers flexibility in deployment across various network infrastructures. In addition to supporting short-range connections, the QSFP-100G-SR4 is capable of extended reach up to 40 kilometers when paired with G.652 single-mode fiber and duplex LC connectors. This feature is particularly useful for applications requiring long-distance communication without compromising data integrity. The 100 Gigabit Ethernet signal is transmitted across four wavelengths, ensuring high performance and reliability over the full 40km reach. Without Forward Error Correction (FEC), the module still offers a considerable reach of 30km, providing versatility in network design and implementation. The QSFP-100G-SR4 also offers backward compatibility with Cisco’s CPAK ER4-Lite and is interoperable with IEEE 100GBASE-ER4 standardized transceivers, including Cisco’s CFP 100G ER4 for distances up to 30km. This compatibility ensures seamless integration into existing network environments, reducing the need for extensive upgrades or equipment changes. As a hot-swappable input/output device, the QSFP-100G-SR4 can be easily installed or removed without disrupting the network, facilitating maintenance and upgrades. Its high-speed electrical interface is compliant with IEEE 802.3bm, ensuring compatibility with the latest Ethernet standards and technologies. Key specifications include: -
  • Support for 100GBase Ethernet rate.
  • Compatibility with MMF Type - OM3, OM4.
  • Hot-swappable with high-speed electrical interface compliant to IEEE 802.3bm.
Overall, the Arista QSFP-100G-SR4 transceiver offers a comprehensive solution for establishing high-speed, reliable optical links in complex networking environments. Its support for both short and long-reach connections, along with its compatibility with a range of multimode and single-mode fibers, provides network engineers with the flexibility to design and expand networks according to specific requirements and constraints.


Item Number Arista QSFP-100G-SR4
Manufacturer Arista
Description 100GBASE SR4 QSFP Module, MPO Interface, 100m Range on OM4 MMF
Connector Type MPO-12 (12-fiber)
Max Distance OM3/OM4 (m) 70/100
Fiber Type Multimode, MPO
100G Optical Transmission Enables 100G data transmission over 12-fiber parallel multimode fiber
Ethernet Rate Supports 100GBase Ethernet
Fiber Compatibility OM3, OM4 Multimode Fiber
Distance Capability 70m (OM3), 100m (OM4)
Attenuation Limit (dB) 1.9
Long-distance Capability Up to 40km on G.652 single-mode fiber
Connector for Long Distance Duplex LC
Transmission Method Transmits over four wavelengths on single-mode fiber
Maximum Reach 40km
Reach without FEC 30km
Backward Compatibility Compatible with QSFP100 ER4-Lite and Cisco’s CPAK ER4-Lite
Standardization Complies with IEEE 100GBASE-ER4 standards
Compatibility with Cisco Compatible with Cisco’s CFP 100G ER4 for up to 30km
Swap Capability Hot-swappable with Cisco QSFP 100G ports
Interoperability Works with IEEE-compliant interfaces
Electrical Interface Meets IEEE 802.3bm for high-speed electrical interface
Max Distance with Multimode Fiber 70m (OM3), 100m (OM4)
Data Transmission Feature Facilitates 100G optical transmission over 12-fiber parallel multimode fiber

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