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by Arista
Product Line: Arista Series
Product Type: Transreceivable module
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Product Description

The CFP2-100G-LR4 Arista module is designed for 100GE routers and switches, offering compatibility with IEEE 802.3ba 100GBASE-LR4 and ITU-T G.959.1 2012, ensuring efficient operation in 100G OTN, network security, and monitoring environments. It features a hot pluggable CFP2 MSA package, a cooled 4x25G LAN-WDM transmitter, and a 4 x 28G Electrical Serial Interface (CEI-28G-VSR), supporting distances up to 10km over G.652 SMF with a power consumption of less than 6W. Additionally, the module is equipped with an MDIO management interface with digital diagnostic monitoring, operates within a case temperature range of -5 to +70 ℃, and is ROHS-6 compliant, housed in a compact size of 107.5×41.5×12.4mm.

FAQs for the CFP2-100G-LR4

  • What is the maximum power consumption of the Hot Pluggable CFP2 MSA package?
    The maximum power consumption is less than 6W.
  • How does the 100GE Router and Switches comply with network standards?
    They are IEEE 802.3ba 100GBASE-LR4 compliant and adhere to ITU-T G.959.1 2012 standards.
  • What is the operating case temperature range for the CFP2 MSA package?
    The operating case temperature range is from -5 to +70 ℃.
  • Can 100G Network Security and Monitoring devices handle high humidity environments?
    Yes, they can operate in environments with up to 85% relative humidity.
  • What type of transmitter is used in the CFP2 MSA module?
    It uses a cooled 4x25G LAN-WDM transmitter.
  • What is the maximum transmission distance for G.652 SMF according to the CFP2 MSA?
    The maximum transmission distance is up to 10km for G.652 SMF.
  • What type of management interface is available on the CFP2 MSA package?
    It features an MDIO management interface with Digital Diagnostic.
  • Are the 100G OTN devices ROHs-6 compliant?
    Yes, the devices are ROHs-6 compliant.
  • What is the damage threshold for the receiver on the CFP2 MSA module?
    The damage threshold for the receiver is +10.0.
  • What are the storage temperature limits for the CFP2 MSA package?
    The storage temperature can reach a maximum of +85 ℃.

Product Review

The Arista CFP2-100G-LR4 module excels in delivering high-speed 100GE connections for routers and switches, OTN, and network security and monitoring applications, supporting distances up to 10km on G.652 SMF with a power consumption of less than 6W, making it energy-efficient. However, its reliance on CFP2 MSA and IEEE 802.3ba standards, while ensuring wide compatibility, may limit its use in environments not yet upgraded to these protocols. Additionally, the module's compact size and operating temperature range offer flexibility in deployment but require careful consideration of cooling solutions in densely packed or high-temperature environments.


The Arista CFP2-100G-LR4 is a high-performance, 100 Gigabit Ethernet transceiver designed for use in a variety of networking applications, including 100GE routers and switches, 100G Optical Transport Networks (OTN), and 100G network security and monitoring systems. This transceiver is compatible with the CFP2 Multi-Source Agreement (MSA) specification, ensuring interoperability with a wide range of networking equipment. It adheres to the IEEE 802.3ba 100GBASE-LR4 standard and supports ITU-T G.959.1 2012, which enables reliable and efficient long-distance communication over single-mode fiber (SMF). The device is capable of transmitting data up to 10 kilometers over G.652 SMF, thanks to its cooled 4x25G LAN-WDM transmitter. It incorporates a 4 x 28G Electrical Serial Interface (CEI-28G-VSR) for high-speed data transfer and utilizes a Management Data Input/Output (MDIO) management interface with Digital Diagnostics for enhanced monitoring and control capabilities. Key features of the Arista CFP2-100G-LR4 include: - Hot pluggable CFP2 MSA package, allowing for easy installation and removal without disrupting the network. - Low power consumption, with less than 6W required, contributing to energy efficiency in network operations. - A compact design, measuring 107.5×41.5×12.4mm, which facilitates integration into space-constrained environments. This transceiver supports a dual LC receptacle for fiber connectivity and operates within a case temperature range of -5°C to +70°C, ensuring reliable performance in varying environmental conditions. It is designed to meet ROHS-6 compliance, reflecting a commitment to environmental sustainability by restricting the use of certain hazardous substances in its manufacture. The Arista CFP2-100G-LR4 has been crafted with durability and reliability in mind. It features a storage temperature range up to +85°C and can operate in environments with relative humidity up to 85%. The receiver's damage threshold is +10.0, indicating a high tolerance for signal power without degradation. Power supply requirements are modest, with a maximum of +3.6V, and it supports input levels of 3.3V LVCMOS, with a maximum of Vcc+0.3V, and 1.2V LVCMOS, with a maximum of 1.6V. This transceiver also showcases a high degree of electrostatic discharge (ESD) protection, with sensitivity on the module and all host pins rated at 2000V. In summary, the Arista CFP2-100G-LR4 is a sophisticated, high-speed networking transceiver that offers efficient, long-distance communication capabilities for modern networks. Its compliance with multiple industry standards, combined with its high performance and low power consumption, makes it an ideal choice for network operators seeking to enhance their data transmission infrastructure.


Part Number Arista CFP2-100G-LR4
Manufacturer Arista
Compatibility 100G Ethernet Routers and Switches, 100G Optical Transport Networks, Network Security and Monitoring at 100G
Form Factor CFP2 MSA Standard, Hot-Swappable
Standard Compliance IEEE 802.3ba 100GBASE-LR4, CFP2 MSA, ITU-T G.959.1 (2012)
Maximum Transmission Distance 10 kilometers on G.652 Single-Mode Fiber
Transmitter Cooled LAN-WDM Emitter, 4 channels at 25Gbps
Electrical Interface 4 x 28Gbps CEI-28G-VSR Serial
Management Interface MDIO with Digital Diagnostic Monitoring
Power Usage Under 6 Watts
Dimensions 107.5mm x 41.5mm x 12.4mm
Operational Temperature Range -5°C to +70°C
Connector Type Dual LC
Environmental Compliance ROHS-6
Storage Temperature Range Maximum +85°C
Humidity Tolerance Up to 85% Relative Humidity
Receiver Damage Threshold +10.0dBm
Maximum Power Supply Voltage +3.6V
Input Signal Voltage for 3.3V LVCMOS Maximum Vcc + 0.3V
Input Signal Voltage for 1.2V LVCMOS Maximum 1.6V
ESD Tolerance 2000V on Module and Host Pins
Maximum Operational Case Temperature +70°C
Maximum Supply Voltage +3.47V

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