Can QSFPDD 400G XDR4 be compatible with QSFP56 or QSFP28 ports?

No, QSFPDD ports can use QSFP56 or QSFP28 optical modules, but QSFPDD optical modules cannot be used on QSFP56/QSFP28 ports.

Does QSFPDD 400G XDR4 support breakout?

QSFPDD 400G XDR4 is an MPO interface, as long as the device port using the module supports the breakout function, then 400G XDR4 can be paired with MPO to LC harness fiber to interconnect with the 100G FR module. This scenario is very common in the connection of 400G QDD switches to 100G QSFP28 switches.

NVIDIA/Mellanox Compatible 400GBASE-XDR4 QSFP-DD PAM4 1310nm 2km Optical Transceiver

Name: NVIDIA/Mellanox Compatible 400G QSFP-DD XDR4 PAM4 1310nm 2km FEC DOM MTP/MPO-12 SMF Optical Transceiver Module
Brand: Naddod
SKU: 102728
Price: 786.00 USD
Availability: OnlineOnly
Rating: 5.0 (18 reviews)

Description

NVIDIA/Mellanox Compatible 400G QSFP-DD XDR4 PAM4 LWDM4 Optical Transceiver Module (MUX/DEMUX design SMF MTP/MPO-12 2km DDM with FEC)

NADDOD NVIDIA/Mellanox QDD-400G-XDR4 Compatible 400G QSFP-DD XDR4 optical transceiver supports 100G breakout links up to 2 km, with forward error correction (FEC) performed on the host platform. The 400G QSFP-DD XDR4 (DR4+) module adopts a 1310 nm EML transmitter and PAM4 modulation, operating at a nominal wavelength of 1310 nm to deliver 400 Gb/s optical transmission. The module is compliant with IEEE 802.3cu specifications for 100GBASE-FR1, as well as 400GAUI-8 and CEI-56G-VSR-PAM4 electrical interface standards.

The 400G QSFP-DD XDR4 transceiver is typically deployed for interconnecting 400G leaf switches to spine switches, or 400G QSFP-DD switches to 100G QSFP28 switches. As server network interface card (NIC) speeds continue to increase, it can also be used to connect 400G QSFP-DD switches with 400G OSFP or QSFP112 NICs. The module is widely used in high-performance computing (HPC) networks, data centers, 400G Ethernet interconnects, enterprise core and distribution layers, and service provider networks.

Specifications

Form Factor

QSFP-DD

Distance

2km

Wavelength

1310nm

Connector

MPO/MTP-12 APC

Power Consumption

≤10.5W

Transmitter

EML

Receiver

Media

SMF

Modulation（electrical ）

8x53.125Gb/s PAM4

Modulation（Optical ）

4x106.25Gb/s PAM4

Case Temperature(℃)

0 to 70°C (32 to 158°F)

Protocol

400G Ethernet Compliant

Connectivity Solutions

The Spine-Leaf Architecture

This network solution utilizes NADDOD optical modules to connect the products and achieve a network architecture upgrade from 100G to 400G. It provides higher data transmission rates and increased reliability while effectively reducing network latency between Spine switches and Leaf switches.

Applications

Product Highlights

Unique advantages of NADDOD 400G transceiver

NADDOD 400G optical transceiver has great advantages in increasing data throughput and maximizing data center bandwidth and port density. 400G QSFP-DD has been tested and recognized by the global market as we are the first brand to complete the commercial order delivery of 400G data center optical modules.

Six professional transceiver performance tests

NADDOD has a full range of professional testing equipments for testing various parameters of products to ensure high performance and quality of optical transmission stability.

Compare Items

	QDD-400G-DR4	OSFP-400G-DR4	QDD-400G-XDR4
Form Factor	QSFP-DD	OSFP	QSFP-DD
Center Wavelength	1310nm	1310nm	1310nm
Connector	MPO/MTP-12 APC	MPO/MTP-12 APC	MTP/MPO-12 APC
Cable Distance	500m	100m	2km
Electrical Modulation	8x53.125Gb/s PAM4(400GAUI-8)	8x53.125Gb/s PAM4(400GAUI-8)	8x53.125Gb/s PAM4(400GAUI-8)
Optical Modulation	4x106.25Gbps PAM4	4x106.25Gbps PAM4	4x106.25Gbps PAM4
Modulation Diagram
Power Consumption	≤10.5W	≤10W	≤10.5W
Transmitter Type	EML	EML	EML
Protocols	QSFP-DD MSA, CMIS Rev4.1, OIF 56G PAM4, 100G Lambda MSA, IEEE 802.3bs	OSFP MSA, CMIS 4.0, IEEE 802.3bs	QSFP-DD MSA, CMIS Rev4.1, OIF 56G PAM4, 100G Lambda MSA, IEEE 802.3bs
Application	Data Center, HPC, enterprise core, 400G to 400G ethernet, 800G to 2x400G Breakout, 400G to 4x100G Breakout	Data Center, HPC, enterprise core, 400G to 400G ethernet, 800G to 2x400G Breakout, 400G to 4x100G Breakout	Data Center, HPC, enterprise core, 400G to 400G ethernet, 800G to 2x400G Breakout, 400G to 4x100G Breakout

Questions & Answers

Ask a Question

Q:

Can OSFP ports use modules in QSFP-DD form factor, such as QDD-400G-XDR4?

A:

OSFP and QSFP-DD are two completely different form factors, so QSFP-DD optical modules like QDD-400G-FR4, QDD-400G-SR8, QDD-400G-LR4 or QDD-400G-XDR4 all these optical transceivers cannot be used in OSFP ports.

Q:

The standard of QSFP56-DD is 8*50G, why are there only four channels in QSFPDD 400G XDR4?

A:

The optical module mainly completes the optical-electrical conversion work, for the number of its signal channels, there are two dimensions: an electrical signal (i.e., host side, connected to the device) and an optical signal (i.e., optical path side, connected to the optical fiber), the 8*50G is its electrical signal channel mode on the host side, and the DSP chip of the QDD-400G-XDR4 module with the gearbox function, which can convert the electrical signals of the 8X50G into the 4X100G optical signal.

Q:

Which application scenarios are QSFPDD 400G XDR4 generally used in?

A:

The QDD-400G-XDR4 transceiver is usually used to interconnect a 400G leaf switch with a spine, or a 400G QDD switch with a 100G QSFP28 switch, and as server NICs increase in speed, it can also be used to interconnect a 400G QDD switch with a 400G OSFP/QSFP112 NIC.