- Catherine
- September 9, 2023
- 7:51 am
John Doe
Answered on 7:51 am
The difference between 400G-BIDI, 400G-SRBD and 400G-SR4.2 is mainly in the naming convention and the form factor of the modules. They are all based on the same principle of using four pairs of multimode fibers, each carrying two wavelengths of 25G signals in both directions, for a total of 400G bandwidth. The term 400G-BIDI is a generic name for this technology, while 400G-SRBD and 400G-SR4.2 are specific names for the modules that implement it.
The 400G-SRBD module is based on the QSFP-DD form factor, which is a double-density version of the QSFP form factor. It has an MPO-12 connector that can be plugged into an existing QSFP port. The 400G-SRBD module can also be used for breakout applications, where it can be connected to four 100G-BIDI modules that use the QSFP28 form factor.
The 400G-SR4.2 module is based on the OSFP form factor, which is a new form factor designed for higher power and thermal performance. It has an MPO-16 connector that can support higher fiber counts and longer distances. The 400G-SR4.2 module can also be used for breakout applications, where it can be connected to four 100G-SR1.2 modules that use the SFP-DD form factor.
Both the 400G-SRBD and the 400G-SR4.2 modules are compliant with the IEEE 802.3bm protocol and the 400G BiDi MSA specification. They can support link lengths of up to 100m over OM4 multimode fiber.
People Also Ask
NVIDIA SN5600: The Ultimate Ethernet Switch for AI and Cloud Data Centers
The NVIDIA SN5600 is a cutting-edge, high-performance Ethernet switch designed to meet the demanding needs of modern data centers, particularly those focused on artificial intelligence (AI), high-performance computing (HPC), and cloud-scale infrastructure. As part of NVIDIA’s Spectrum-4 series, the SN5600 delivers unparalleled throughput, low latency, and advanced networking features, making
How Ethernet Outpaces InfiniBand in AI Networking
Ethernet Challenges InfiniBand’s Dominance InfiniBand dominated high-performance networking in the early days of generative AI due to its superior speed and low latency. However, Ethernet has made significant strides, leveraging cost efficiency, scalability, and continuous technological advancements to close the gap with InfiniBand networking. Industry giants like Amazon, Google, Oracle,
Understanding NVIDIA’s Product Ecosystem and Naming Conventions
Compute Chips—V100, A100, H100, B200, etc. These terms are among the most commonly encountered in discussions about artificial intelligence. They refer to AI compute cards, specifically GPU models. NVIDIA releases a new GPU architecture every few years, each named after a renowned scientist. Cards based on a particular architecture typically
Differences Between BA, LA, and PA in Optical Transmission
Before diving into the specifics of BA, LA, and PA, it’s essential to understand the role of optical amplifiers in general. Optical amplifiers boost the power of optical signals without converting them to electrical signals, a process that enhances efficiency and reduces latency in fiber-optic communication systems. The primary types
What Is the Minimum Bend Radius of an Optical Fiber?
The minimum bend radius of an optical fiber is defined as the smallest radius to which the fiber can be bent while still maintaining normal transmission of optical signals. In practical terms, it is the minimum curvature radius that the fiber can endure without causing excessive signal loss, modal dispersion,
AEC Active Cable Testing Solution – Deciphering AEC Performance Step by Step
With the continuous expansion of data centers and the increasing demand for high-performance computing, the AEC (Active Electrical Cable) has emerged as an effective high-speed, short-distance transmission solution. Major cloud service providers—such as Google, AWS, and Microsoft—have already embarked on large-scale deployments of AEC, while hardware manufacturers like Nvidia have
Related Articles
800G SR8 and 400G SR4 Optical Transceiver Modules Compatibility and Interconnection Test Report
Version Change Log Writer V0 Sample Test Cassie Test Purpose Test Objects：800G OSFP SR8/400G OSFP SR4/400G Q112 SR4. By conducting corresponding tests, the test parameters meet the relevant industry standards, and the test modules can be normally used for Nvidia (Mellanox) MQM9790 switch, Nvidia (Mellanox) ConnectX-7 network card and Nvidia (Mellanox) BlueField-3, laying a foundation for
NVIDIA SN5600: The Ultimate Ethernet Switch for AI and Cloud Data Centers
The NVIDIA SN5600 is a cutting-edge, high-performance Ethernet switch designed to meet the demanding needs of modern data centers, particularly those focused on artificial intelligence (AI), high-performance computing (HPC), and cloud-scale infrastructure. As part of NVIDIA’s Spectrum-4 series, the SN5600 delivers unparalleled throughput, low latency, and advanced networking features, making
How Ethernet Outpaces InfiniBand in AI Networking
Ethernet Challenges InfiniBand’s Dominance InfiniBand dominated high-performance networking in the early days of generative AI due to its superior speed and low latency. However, Ethernet has made significant strides, leveraging cost efficiency, scalability, and continuous technological advancements to close the gap with InfiniBand networking. Industry giants like Amazon, Google, Oracle,
Understanding NVIDIA’s Product Ecosystem and Naming Conventions
Compute Chips—V100, A100, H100, B200, etc. These terms are among the most commonly encountered in discussions about artificial intelligence. They refer to AI compute cards, specifically GPU models. NVIDIA releases a new GPU architecture every few years, each named after a renowned scientist. Cards based on a particular architecture typically
Differences Between BA, LA, and PA in Optical Transmission
Before diving into the specifics of BA, LA, and PA, it’s essential to understand the role of optical amplifiers in general. Optical amplifiers boost the power of optical signals without converting them to electrical signals, a process that enhances efficiency and reduces latency in fiber-optic communication systems. The primary types
What Is the Minimum Bend Radius of an Optical Fiber?
The minimum bend radius of an optical fiber is defined as the smallest radius to which the fiber can be bent while still maintaining normal transmission of optical signals. In practical terms, it is the minimum curvature radius that the fiber can endure without causing excessive signal loss, modal dispersion,
AEC Active Cable Testing Solution – Deciphering AEC Performance Step by Step
With the continuous expansion of data centers and the increasing demand for high-performance computing, the AEC (Active Electrical Cable) has emerged as an effective high-speed, short-distance transmission solution. Major cloud service providers—such as Google, AWS, and Microsoft—have already embarked on large-scale deployments of AEC, while hardware manufacturers like Nvidia have