Cisco QSFP-100G-ZR4-S Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 100GBASE-ZR4 QSFP28 Four-Wavelength O-Band Extended Reach Single-Mode Optical Transceiver Module with Digital Diagnostic Monitoring Support
SKU:QSFP-100G-ZR4-S
Naming Breakdown
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QSFP28: Quad Small Form-factor Pluggable 28 hot‑swappable transceiver compliant with SFF‑8665 QSFP28 MSA specification
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100G: Aggregate 103.125 Gbps bandwidth (4 × 25.78125 Gbps NRZ electrical lanes for CAUI-4)
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ZR4: Extended Reach 4-channel WDM O-band optical standard
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S: Commercial temperature grade variant (0°C ~ +70°C operating range)
Core Architecture:
Four independent 25G NRZ EML transmitters operating on O-band wavelengths: 1295 nm, 1300 nm, 1304 nm, 1309 nm. Integrated multiplexer/demultiplexer combines four optical signals for transmission over a single duplex LC single-mode fiber pair. Equipped with built-in Semiconductor Optical Amplifier (SOA) at the receiver side to compensate fiber attenuation.
Critical Mandatory Requirement:Host-side RS-FEC (528,514) must be enabledto achieve full 80km transmission distance.
Interoperability Note: Not interoperable with LR4 / ER4L transceivers without matching RS-FEC configuration.
Restriction:4×25G electrical breakout is NOT supported; operates only as native aggregated 100G link.
Core Product Positioning
The Cisco QSFP-100G-ZR4-S is a commercial-grade hot‑swappable QSFP28 optical transceiver designed for ultra-long reach 100 Gigabit Ethernet connections. It extends single-mode fiber transmission distance up to 80 km over G.652 OS2 fiber, filling the reach gap beyond 40km ER4L modules. It eliminates the need for external standalone optical amplifiers by integrating SOA inside the module, lowering total deployment cost for inter-data-center, metro carrier, and long-distance enterprise campus backbone links. Integrated DOM/DDM enables continuous real-time monitoring of optical operating parameters to streamline maintenance and accelerate fault troubleshooting.
2. Hardware & Software Compatibility
Supported Host Platforms
Cisco Nexus 3000 / 9000 Series Switches; Catalyst 9500 / 9600 Series Switches; ASR 1000 Series Routers, UCS servers and other hardware equipped with QSFP28 ports supporting 100 Gigabit Ethernet.
Verify Cisco official transceiver compatibility matrix and minimum required firmware release prior to deployment.
Supported Operating Systems
NX-OS, IOS-XE releases supporting QSFP28 MSA and SFF‑8636 digital diagnostic monitoring functions.
Supported Fiber Media
Single‑Mode Fiber (SMF) G.652 (OS2, 9/125μm) only; incompatible with multi-mode fiber.
Connector Type
Duplex LC UPC optical connector
3. Physical & Optical Performance Specifications
Form Factor
Hot‑swappable QSFP28, compliant with SFF‑8665 MSA
Optical Interface
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O-Band Wavelength Grid: 1295 nm, 1300 nm, 1304 nm, 1309 nm
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Electrical Lane Rate: 4 × 25.78125 Gbps NRZ CAUI-4
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Modulation: NRZ
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Built-in Component: Receiver-side SOA
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Mandatory Function: Host RS-FEC (528,514)
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Operating Mode: Native 100G only; electrical breakout function disabled
Maximum Transmission Distance
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Up to80 kmover standard G.652 single-mode fiber (RS-FEC enabled)
Optical Link Budget Parameters
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Maximum Power Consumption: ≤5.5 W
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Average Transmit Optical Power: Refer to Cisco official datasheet
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Minimum Receiver Sensitivity: Optimized via integrated SOA
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Maximum Allowable Received Optical Power: Per vendor specification
Digital Diagnostics
DOM / DDM (Digital Diagnostic Monitoring) Supported
Monitors internal module temperature, supply voltage, laser bias current, transmit optical power and receive optical power.
Environmental Specifications (Commercial Grade)
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Operating Temperature:0°C ~ +70°C (32°F ~ 158°F)
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Storage Temperature: -40°C ~ +85°C (-40°F ~ 185°F)
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Relative Humidity: 5% – 95%, non‑condensing
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Maximum Operating Altitude: 3,000 meters
4. Supported Functional Capabilities
Ethernet Transport
Wire-speed full-duplex native 100GBASE-ZR4 Ethernet; requires host RS-FEC activation; no electrical breakout capability.
Layer 2 Protocol Support
802.1Q VLAN trunking, IEEE 802.3x pause frame flow control, LACP, STP/RSTP/MSTP, EtherChannel link aggregation
Interface Diagnostics
Link status detection, error statistics, DOM real-time optical telemetry, LOS (Loss of Signal) alarm indication, Tx disable control, local loopback testing
High Availability
Supports hot-plug OIR (Online Insertion and Removal) on compatible platforms; supports link redundancy via port-channels and spanning tree protocols
Operations & Management
NX-OS / IOS-XE command-line interface, SSH, SNMP v2c/v3, Syslog logging
5. Typical Deployment Scenarios
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Long-distance point-to-point 100GE interconnections between geographically separated regional data centers up to 80 km
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Metropolitan service provider core backbone single-mode fiber links
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Large enterprise campus inter-building long-distance 100G backbone networks
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Mobile transport network connecting remote radio aggregation sites to central data centers
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WAN edge high-speed 100G uplinks requiring extended single-mode fiber transmission range
6. Regulatory & Compliance Certifications
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Safety Standards: UL 60950‑1, IEC/EN 60950‑1, CSA C22.2 No.60950‑1
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EMC Compliance: CE Mark, FCC Part 15 Class A, ICES‑003 Class A
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Laser Safety: Class 1 Laser Product conforming to IEC 60825‑1
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Industry Standards: QSFP28 MSA, SFF‑8665, SFF‑8636
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Environmental Regulation: RoHS compliant, WEEE directive compliant
7. Standard Factory Package Contents
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Cisco QSFP-100G-ZR4-S QSFP28 Optical Transceiver
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Hardware Installation Guide
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Safety and Regulatory Documentation
Duplex LC single-mode patch cords sold separately. Cannot be electrically split into independent 25G channels.
Model Comparison Reference
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QSFP-100G-ZR4-S: Duplex LC SMF O-band 4-WDM, integrated SOA, max 80km, requires RS-FEC
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QSFP-100G-ER4L-S: Duplex LC LAN WDM, max 40km, APD receiver
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QSFP-100G-LR4-S: Duplex LC LAN WDM, max 10km, no mandatory FEC
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QSFP-100G-CWDM4-S: Duplex LC CWDM4, max 2km, intra-data-center short-medium reach
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QSFP-100G-FR-S: Duplex LC single-lambda PAM4, max 2km
UNSPSC Classification Code
43222618 – Cisco QSFP-100G-ZR4-S ultra-extended reach O-band WDM single-mode QSFP28 transceiver with DOM and integrated SOA, hot-swappable 100 Gigabit optical module for metro, inter-data-center and long-distance campus 100G Ethernet networking.
Hardware Warranty
Genuine Cisco transceivers are covered under Cisco limited hardware warranty. Warranty terms for refurbished units follow respective reseller agreements.
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