- Catherine
FiberMall
Answered on 7:27 am
There are a few different ways to do this (as discussed earlier in this document), summarized below.
i) OSFP-400G-DR4 (or QDD-400G-DR4) to 4 x QSFP-100G-DR over 500m SMF
Connect up to 4 x QSFP-100G-DRs to a single OSFP-400G-DR4 (or QDD-400G-DR4). The QSFP-100G-DR can plug into any Arista 100G QSFP port.
ii) OSFP-400G-XDR4 (or QDD-400G-XDR4) to 4 x QSFP-100G-FR over 2km SMF
Connect up to 4 x QSFP-100G-FRs to a single OSFP-400G-XDR4 (or QDD-400G-XDR4). The QSFP-100G-FR can plug into any Arista 100G QSFP port.
iii) OSFP-400G-PLR4 (or QDD-400G-PLR4) to 4 x QSFP-100G-LR over 10km SMF
Connect up to 4x QSFP-100G-LRs to a single OSFP-400G-PLR4 (or QDD-400G-PLR4). The QSFP-100G-LR can plug into any Arista 100G QSFP port.
iv) H-O400-4Q100-xM (or H-D400-4Q100) to 4x QSFP100 ports with Active Copper DACs, 1m-5m
Connect up to 4x 100G QSFP ports to a single 400G OSFP or QSFP-DD port. The QSFP end of the active breakout DAC includes a gearbox chip that converts 2x50G PAM-4 electrical signals into a 4x 25G NRZ interface, the modulation format used in legacy 100G QSFP ports.
v) OSFP-400G-2FR4 to 2 x QSFP-100G-CWDM4 over 2km SMF
If an OSFP port is configured for 2 x 100G (i.e. 200G total bandwidth), the OSFP-400G-2FR4 module can be used to connect to 2 x QSFP-100G-CWDM4 transceivers over duplex single-mode fibers.
Configuring an OSFP port for 200G total bandwidth means each of the 8 electrical lanes to/from the OSFP operates at 25Gb/s NRZ, the same modulation format used in legacy 100G QSFP ports.
vi) OSFP-400G-SRBD (or QDD-400G-SRBD) to 4x QSFP-100G-SRBD or 4x 100G-SR1.2 QSFPs over 100m MMF
Connect up to 4x QSFP-100G-SRBD, or 4x 100G-SR1.2 QSFPs to a single 400G-BIDI module.
vii) OSFP-400G-SR8 (or QDD-400G-SR8) to 2 x QSFP-100G-SR4 QSFPs over 100m MMF
If an OSFP port is run at 200G total bandwidth, the OSFP-400G-SR8 module can be used to connect to 2 x QSFP-100G-SR4 transceivers using a multimode breakout cable.
viii) Passive DAC breakout cable using CAB-O-2Q-400G-xM / CAB-O-2Q-200G-xM or CAB-D-2Q-400G-xM / CAB-D-2Q-200G-xM
If the OSFP or QSFP-DD port is run at 200G total bandwidth, a passive DAC breakout cable can be used to connect an OSFP or QSFP-DD port into 2x 100G QSFP ports.
People Also Ask
NVIDIA Launches Spectrum-XGS Ethernet Technology: From Scale-Up/Out to Cross-Domain Scaling!
In the lead-up to the 2025 Hot Chips conference, NVIDIA officially unveiled the Spectrum-XGS Ethernet technology. This innovative solution, based on network optimization algorithms, introduces “scale-across” capabilities, breaking through the power and space physical limitations of single data centers. It connects multiple data centers distributed across different cities and countries
1.6 T Optical Module Production Line TX Parallel Testing: A Comprehensive Guide
In the fast-paced realm of high-speed optical communications, major optical module manufacturers are leveraging 4-channel optical sampling oscilloscopes to enhance TX testing efficiency for 400G, 800G, and 1.6 T modules. However, due to the architectural differences between 4-channel and single-channel TX testing, extra attention to details is essential. Otherwise, even after
Scale Out vs Scale Up: Insights into AI Network Architectures for 2028
As a leading specialist in optical-communication products and solutions, FiberMall is dedicated to providing cost-effective options for global data centers, cloud computing, enterprise networks, access networks, and wireless systems. With our expertise in AI-enabled communication networks, we’re the perfect partner for those seeking high-quality, value-driven optical-communication solutions. In this blog,
Understanding Optical Transceiver Modules: A Comprehensive Guide to Technical Parameters
In the world of fiber optic communications, optical transceiver modules play a pivotal role as interfaces that convert electrical signals to optical signals and vice versa. If you’re dealing with data centers, telecommunications, or AI networking, grasping the key parameters of an optical transceiver module is essential. This blog post dives deep
Spine-Leaf vs. Traditional Three-Tier Architecture: Comprehensive Comparison and Analysis
Introduction Evolution of Data Center Networking Over the past few decades, data center networking has undergone a massive transformation from simple local area networks to complex distributed systems. In the 1990s, data centers primarily relied on basic Layer 2 switching networks, where servers were interconnected via hubs or low-end switches.
AMD: Pioneering the Future of AI Liquid Cooling Markets
In the rapidly evolving landscape of AI infrastructure, AMD is emerging as a game-changer, particularly in liquid cooling technologies. As data centers push the boundaries of performance and efficiency, AMD’s latest advancements are setting new benchmarks. FiberMall, a specialist provider of optical-communication products and solutions, is committed to delivering cost-effective
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 Launches Spectrum-XGS Ethernet Technology: From Scale-Up/Out to Cross-Domain Scaling!
In the lead-up to the 2025 Hot Chips conference, NVIDIA officially unveiled the Spectrum-XGS Ethernet technology. This innovative solution, based on network optimization algorithms, introduces “scale-across” capabilities, breaking through the power and space physical limitations of single data centers. It connects multiple data centers distributed across different cities and countries
1.6 T Optical Module Production Line TX Parallel Testing: A Comprehensive Guide
In the fast-paced realm of high-speed optical communications, major optical module manufacturers are leveraging 4-channel optical sampling oscilloscopes to enhance TX testing efficiency for 400G, 800G, and 1.6 T modules. However, due to the architectural differences between 4-channel and single-channel TX testing, extra attention to details is essential. Otherwise, even after
Scale Out vs Scale Up: Insights into AI Network Architectures for 2028
As a leading specialist in optical-communication products and solutions, FiberMall is dedicated to providing cost-effective options for global data centers, cloud computing, enterprise networks, access networks, and wireless systems. With our expertise in AI-enabled communication networks, we’re the perfect partner for those seeking high-quality, value-driven optical-communication solutions. In this blog,
Understanding Optical Transceiver Modules: A Comprehensive Guide to Technical Parameters
In the world of fiber optic communications, optical transceiver modules play a pivotal role as interfaces that convert electrical signals to optical signals and vice versa. If you’re dealing with data centers, telecommunications, or AI networking, grasping the key parameters of an optical transceiver module is essential. This blog post dives deep
Spine-Leaf vs. Traditional Three-Tier Architecture: Comprehensive Comparison and Analysis
Introduction Evolution of Data Center Networking Over the past few decades, data center networking has undergone a massive transformation from simple local area networks to complex distributed systems. In the 1990s, data centers primarily relied on basic Layer 2 switching networks, where servers were interconnected via hubs or low-end switches.
AMD: Pioneering the Future of AI Liquid Cooling Markets
In the rapidly evolving landscape of AI infrastructure, AMD is emerging as a game-changer, particularly in liquid cooling technologies. As data centers push the boundaries of performance and efficiency, AMD’s latest advancements are setting new benchmarks. FiberMall, a specialist provider of optical-communication products and solutions, is committed to delivering cost-effective