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Cisco QSFP-DD 400G ZR/ZR+ Coherent Optics

Transmit 400G wavelengths up to 120km with coherent ZR and enable long-haul transmission with OpenZR+. Multi-rate support for 100G/200G/300G/400G.

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Cisco QSFP-DD 400G ZR/ZR+ Coherent Optics
400G ZR/ZR+ QSFP-DD Multi-Rate Up to 500km+ Metro & DCI

Product Overview

400G Coherent Capacity

Deliver 400 Gbps per wavelength over DWDM infrastructure for high-capacity metro and data center interconnect.

Multi-Rate Flexibility

Software-configurable line rates at 100G, 200G, 300G, and 400G to match bandwidth needs and optimize reach.

ZR: 120km / ZR+: 500km+

Standards-based ZR for metro DCI up to 120km and OpenZR+ for extended reach beyond 500km.

Eliminates Transponders

Plug directly into router QSFP-DD ports, removing external transponder shelves and reducing network layers.

Routed Optical Networking

Converge IP and optical layers into a unified architecture for simplified operations and lower total cost.

Standards-Based Interop

OIF 400ZR compliant for multi-vendor interoperability across metro DCI deployments.

Features and Benefits

Versatile coherent optics for metro and beyond.

The 400G ZR/ZR+ delivers flexible, multi-rate coherent connectivity in a compact QSFP-DD pluggable for any deployment scenario.

400G Per Wavelength

Maximize fiber capacity with 400 Gbps coherent wavelengths over existing DWDM infrastructure.

Multi-Rate Operation

Configure 100G, 200G, 300G, or 400G line rates in software to optimize reach vs. capacity.

Advanced FEC

Concatenated FEC (cFEC) for ZR and open FEC (oFEC) for ZR+ provide robust error correction at all distances.

QSFP-DD Pluggable

Standard QSFP-DD form factor enables deployment across a wide range of Cisco routing platforms.

Scalable DCI

Scale data center interconnect bandwidth incrementally with pay-as-you-grow pluggable optics.

Feature & Benefit Details

Feature
Benefit
400G ZR (120km)
OIF-standard interoperable metro DCI with maximum single-wavelength capacity.
400G ZR+ (500km+)
Extended reach for regional networks using enhanced FEC and flexible modulation.
Multi-rate 100G-400G
Software-configurable line rate to balance capacity and reach for each link.
QSFP-DD form factor
High port density and broad platform support in a compact pluggable module.
Routed Optical Networking
Collapse IP and optical layers to reduce equipment, power, and operational cost.

Specifications

Optics

Form factorQSFP-DD
Data rate400G (multi-rate 100G-400G)
Modulation16-QAM / QPSK (configurable)
FECcFEC (ZR) / oFEC (ZR+)

Reach

ZR reachUp to 120km
ZR+ reachOver 500km
Wavelength gridC-band DWDM
ApplicationMetro & DCI

Documentation

Data Sheet

Cisco QSFP-DD 400G ZR/ZR+ Coherent Module Data Sheet. Full specifications, supported platforms, and ordering information.

Download PDF ›

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Cisco 400G ZR/ZR+ Coherent Optics