Cisco 400G QSFP-DD Cable and Transceiver

Table 2.        Cisco 400G QSFP-DD portfolio

Note:      Except for QDD-400G-SR8-S, QDD-400G-DR4-S, QDD-4X100G-FR-S, QDD-4X100G-LR-S, only connections with patch cords with PC or Ultra-Physical Contact (UPC) connectors are supported. QDD- 400G- SR8-S, QDD-400G-DR4-S, QDD-4X100G-FR-S, QDD-4X100G-LR-S require patch cords with Angled Physical Contact (APC) MPO connectors. QDD-400G-SR8-S requires MPO-16 APC for MMF. All cables and cable assemblies used must be compliant with the standards specified in the standards section of this datasheet. For more information and references on QSFP-DD cable guides, please click on the following link: Cisco Transceiver Modules – Brochures – Cisco.

Cisco 400G QSFP-DD transceiver prominent features and differentiators

Cisco QDD-400-CUxM

Figure 1.            

QDD-400-CUxM

he Cisco 400G QDD-400-CuxM module (Figure 1) primarily enables high-bandwidth 400G links and supports 400G Ethernet rate. It provides a QSFP-DD-to-QSFP-DD copper direct-attach solution. QDD-400-CuxM cables are suitable for very short links and offer a cost-effective way to establish a 400-Gigabit link between QSFP-DD 400G ports of switches/routers within racks and across adjacent racks. Cisco currently offers passive copper cables in lengths of x=0.5, 1, 2, 2.5, and 3 meters. FEC is perform on the host platform.

Cisco QDD-4ZQ100-CUxM

Figure 2.            

QDD-4ZQ100-CUxM

The Cisco 400G QDD-4ZQ100-CUxM passive copper cable (Figure 2) enables high-bandwidth breakout from a 400G port to four 100GE links. It provides a QSFP-DD-to-4x QSFP56 100GBASE-CR2 copper direct-attach solution. QDD-4ZQ100-CuxM cables are suitable for very short links and offer a cost-effective way to establish a 4x 100-Gigabit link between QSFP-DD 400G port and four 100GE ports to switch or servers within or to adjacent racks. Cisco currently offers passive copper cables in lengths of x=1, 2, 2.5, and 3 meters. . FEC is perform on the host platform.

Cisco QDD-2Q200-CU3M

Figure 3.            

QDD-2Q200-CU3M

The Cisco QDD-2Q200-CU3M passive copper cable (Figure 3) provides high-bandwidth breakout from a 400G port to two 200GE links. It provides a QSFP-DD-to-2x QSFP56 200GBASE-CR4 copper direct-attach solution. QDD-2Q200-Cu3M cables are suitable for very short links and offer a cost-effective way to establish a 2x 200- Gigabit link between QSFP-DD 400G port and two 200GE ports to switches or servers within or to adjacent racks. Cisco currently offers passive copper cables in 3 meters lengths. FEC is perform on the host platform.

Cisco QDD-400-AOCxM

Figure 4.            

QDD- 400-AOCxM

The Cisco QDD-400-AOCxM modules (Figure 4) with AOC cables are suitable for short distances and offer a flexible way to connect within racks and across racks. Active optical cables are much thinner and lighter than copper cables, which makes cable management easier. AOCs enable efficient system airflow, which is critical in high-density racks. Cisco currently offers active optical cables in lengths of x=1, 2, 3, 5, 7, 10, 15, 20, 25, and 30 meters. FEC is perform on the host platform.

Cisco QDD-400G-SR8-S

Figure 5.            

QDD-400G-SR8-S

The Cisco QDD-400G-SR8-S Module (Figure 5) supports 400GE links and up to 8x 50GE breakouts or two 200GE breakout links lengths of up to 100m over OM4 MMF. The module has 8 pairs of MMF with an MPO-16 APC connector. It is compliant to the IEEE 802.3bm protocol and 400GAUI-8/CEI-56G-VSR-PAM4 standards. The 400 Gigabit Ethernet signal is carried over eight parallel pairs of fibers by 50Gbps signals per fiber. It can also be used as 8x 50GE breakout to SFP56-50G-SR modules or 2x QSFP-200G-SR4-S modules. FEC is performed on the host platform.

Cisco QDD-400G-SR4.2-BD

Figure 6.            

QDD-400G-SR4.2-BD

The Cisco QDD-400G-SR4.2-BD Module (Figure 6) supports 400GE links and up to four 100GE breakout link lengths of up to 100m over OM4 MMF. The module has four pairs of MMF with an MPO-12 UPC connector. It is compliant to the IEEE 802.3bm protocol and 400GAUI-8/CEI-56G-VSR-PAM4 standards. The 400 Gigabit Ethernet signal is carried over four parallel pairs of fibers by two 50Gbps bidirectional wavelength per fiber. It can also be used as 4x100GE breakout to QSFP-100G-SR1.2 modules. FEC is performed on the host platform.

QDD-400G-DR4-S

Figure 7.            

QDD-400G-DR4-S

The Cisco QDD-400G-DR4-S Module (Figure 7) supports 400GE links and up to four 100GE breakout link lengths of up to 500m. The module has four pairs of SMF with an MPO-12 connector. It is compliant to the IEEE 802.3bs protocol and 400GAUI-8/CEI-56G-VSR-PAM4 standards. The 400 Gigabit Ethernet signal is carried over four parallel lanes by one wavelength per lane. It can be used as 4x100G breakout to QSFP28 100G-DR, 100G-FR, and 100G-LR. FEC is performed on the host platform.

QDD-4X100G-FR-S

Figure 8.            

QDD-4X100G-FR-S

The Cisco QDD-4X100G-FR-S Module (Figure 8) supports 100G breakout link lengths of up to 2km. The module has four pairs of SMF with an MPO-12 connector. It is compliant to the IEEE 802.3cu for 100GBASE- FR1, and 400GAUI-8/CEI-56G-VSR-PAM4 standards. The 400 Gigabit Ethernet signal is carried over four parallel lanes by one wavelength per lane. It can be used as 4x100G breakout to QSFP28 100G-DR (up to 500m), 100G-FR, and 100G-LR. FEC is performed on the host platform.

QDD-4X100G-LR-S

Figure 9.            

QDD-4X100G-LR-S

The Cisco QDD-4X100G-LR-S Module (Figure 9) supports 100G breakout link lengths of up to 10km. The module has four pairs of SMF with an MPO-12 connector. It is compliant to the IEEE 802.3cu for 100GBASE- LR1, and 400GAUI-8/CEI-56G-VSR-PAM4 standards. The 400 Gigabit Ethernet signal is carried over four parallel lanes by one wavelength per lane. It can be used as 4x100G breakout to QSFP28 100G-DR (up to 500m), 100G-FR (up to 2km), and 100G-LR (up to10km). FEC is performed on the host platform.

QDD-400G-FR4-S

Figure 10.         

QDD-400G-FR4-S

The Cisco QDD-400G-FR4-S Module (Figure 10) supports link lengths of up to 2km SMF with duplex LC connector. It is compliant to IEEE 802.3cu for 400GBASE-FR4 requirements and 100G Lambda MSA group, and 400GAUI-8/CEI-56G-VSR-PAM4 standards. The 400 Gigabit Ethernet signal is carried over four CWDM grid optical wavelengths. Multiplexing and demultiplexing of the four wavelengths are managed within the device. FEC is performed on the host platform.

QDD-400G-LR4-S

Figure 11.         

QDD-400G-LR4-S

The Cisco QDD-400G-LR4-S Module (Figure 11) supports link lengths of up to 10km SMF with duplex LC connector. It is compliant to IEEE 802.3cu for 400GBASE-LR4-6km requirements but extends the reach to 10km, is compliant to100G Lambda MSA group 400G-LR4 requirements, and 400GAUI-8/CEI-56G-VSR-PAM4 standards. The 400 Gigabit Ethernet signal is carried over four CWDM grid optical wavelengths. Multiplexing and demultiplexing of the four wavelengths are managed within the device. FEC is performed on the host platform.

Figure 12.         

QDD-2X100-SR4-S

The Cisco QDD-2X100-SR4-S module (Figure 12) supports link lengths of up to 100m on OM4 MMF. The module uses an MPO-24 MMF connector. It is compliant to IEEE 802.3 100GBASE-SR4 requirements. The module provides backward compatibility to two 100GBASE-SR4 transceivers, improving port efficiency to legacy 100G optical interfaces. FEC is performed on the host platform.

QDD-2X100-CWDM4-S

Figure 13.         

QDD-2X100-CWDM4-S

The Cisco QDD-2X100-CWDM4-S module (Figure 13) supports link lengths of up to 2km over SMF and uses a dual duplex CS connector. It is compliant to the 100G-CWDM4 MSA. The 100 Gigabit Ethernet signal is carried over four CWDM grid optical wavelengths at 25Gb/s each. Multiplexing and demultiplexing of the four wavelengths are managed within the device. FEC is performed on the host platform.

QDD-2X100-LR4-S

Figure 14.         

QDD-2X100-LR4-S

The Cisco QDD-2X100-LR4-S module (Figure 14) supports link lengths of up to 10km over SMF and uses a dual duplex CS connector. It is compliant to IEEE 802.3 100GBASE-LR4 requirements. The module provides backward compatibility to two 100GBASE-LR4 transceivers, improving port efficiency to legacy 100G optical interfaces.

Table 3.        QSFP port and cabling specifications

Platform support

Cisco QSFP-DD modules are supported on Cisco switches and routers. For more details, refer to the Cisco Transceiver Modules Compatibility Matrix.

Specifications

Table 4.        Electrical specifications

Table 5.        Optical specifications

¹ Average receive power per lane (min) is informative and not the principal indicator of signal strength. A received power below this value cannot be compliant; however, a value above this does not ensure compliance

Table 6.        Mechanical specifications

QSFP-DD Breakout Capability and Module Interoperation

Some of Cisco’s QSFP-DD modules have the capability to be operated in breakout mode on specific platforms. This allow the QSFP-DD port to be configured as if it were two or four 100GE ports. This function provides users the ability to use the latest platforms with 400G ports with the latest features while still providing connectivity to existing 100G platforms that are already in the network. This eases the migration to 400GE on a port-by-port basis while providing very high density 100GE interfaces. These modules will interoperate with Cisco as well as 3rd party modules that comply with the same standards. Tables 7-10 provides brief overview of the various optical breakout options, compatibility and reach to 100GE modules. Module optical interoperability can also be verified with the Cisco Module Interoperability Matrix.

Table 7.        QSFP-DD SMF PAM4 Breakout Interoperation and Link Reach

² 100G-LR-20 is a standard of the 100G Lambda MSA ( www.100glambda.com)

³ 100G-CWDM4 is compliant to the requirements from the CWDM4 Group MSA (CWDM4-MSA Group)

⁴ QSFP-100G-SM-SR is compatible with 100G-CWDM4 except with 4.2dB link margin

Table 8.        QSFP-DD SMF PAM4 Duplex Interoperation and Link Reach

¹ 400GBASE-LR4-6 is the IEEE requirement is limited to 6km reach, the QDD-400G-LR4 module is 100% compatible with this requirement, but has a reachG of 10km.

Table 9.        QSFP-DD MMF PAM4 Duplex Interoperation and Link Reach

Table 10.     QSFP-DD 2x100G NRZ Interoperation and Link Reach

Table 11.     Ordering information

Regulatory and standards compliance

Standards

• OIF CEI-56G-VSR-PAM4
• QSFP-DD MSA hardware Rev 4.1, QSFP-DD hardware specification for QSFP double-density 8X pluggable transceiver
• 400G-FR4 MSA: 100G Lambda MSA Group
• 400G-LR4 MSA: 100G Lambda MSA Group
• GR-20-CORE: Generic Requirements for Optical Fiber and Optical Fiber Cable
• GR-326-CORE: Generic Requirements for Single-Mode Optical Connectors and Jumper Assemblies
• GR-468-CORE: Generic Requirements for Optoelectronic Devices Used in Telecommunications Equipment
• GR-1435-CORE: Generic Requirements for Multifiber Optical Connectors
• Common Management Specification (CMIS) Rev 4.0
• IEEE Std 802.3™-2018 IEEE Standard for Ethernet
• IEEE 802.3ba CL88
• IEEE 802.3bs 400GAUI-8 Annex 120E
• IEEE 802.3cd CL136
• IEEE 802.3cu CL140

Safety

• Laser Class 1 21CFR-1040 LN#50
• Laser Class 1 IEC60825-1
• Cable jacket can be certified to UL or CSA jacketed appliance wiring material, rated VW-1 or FT-1.
• All cables must be type CM, CMG, CMP, or CMR. If cable is type CL2 (USA type of cable), it must also be type LVT or ELC (Canadian type of cable).
• Compliance with North American (FCC/ICES), European (CENELEC), Japanese (VCCI), and Telcordia NEBS standards
• GR-1089 EMC and Electrical Safety – Generic Criteria for Network Telecommunications Equipment
• EMI compliance on FCC Part 15 (30 MHz – 40 GHz) and CISPR32/CISPR22 (30-6000 MHz)
• RFI compliance on EN/IEC 61000-4-3 and GR-1089-CORE (10k to 10 GHz)
• ESD compliance on EN/IEC 61000-4-2 and GR-1089
• Certification to IEC/EN 60825-1 +A2
• RoHS 6 compliance

Table 12.     Laser class for QSFP-DD modules

Product sustainability

Information about Cisco’s Environmental, Social and Governance (ESG) initiatives and performance is provided in Cisco’s CSR and sustainability reporting.

Table 13.     Cisco environmental sustainability information

Warranty

Standard warranty: 5 years

Expedited replacement available via a Cisco SMARTnet® Service support contract

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Additional information

For more information about Cisco 400G QSFP-DD copper modules, contact your sales representative or visit https://www.cisco.com/en/US/products/hw/modules/ps5455/prod_module_series_home.html.

Document history

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