Cisco QSFP-40G-ER4 Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 40GBASE-ER4 QSFP+ CWDM Extended-Reach Single-Mode Optical Transceiver Module with Digital Optical Monitoring Support
SKU:QSFP-40G-ER4
Naming Breakdown
-
QSFP+: Quad Small Form-factor Pluggable hot‑swappable transceiver compliant with SFF‑8436 QSFP+ MSA specification
-
40G: Aggregate 41.2 Gbps bandwidth for 40 Gigabit Ethernet (4 × 10.3125 Gbps electrical lanes)
-
ER4: Extended Reach 4-channel CWDM multiplexed transmission, IEEE 802.3ba 40GBASE-ER4 standard
Core Architecture: Integrates internal optical MUX/DEMUX. Four independent electrical lanes are multiplexed onto four CWDM wavelengths and transmitted over one duplex single-mode fiber pair.
Critical Restrictions:4×10G breakout function NOT supported. This module supports both native 40GBASE Ethernet and OTU‑3 carrier transport rates.
Core Product Positioning
The Cisco QSFP-40G-ER4 is a commercial-grade hot‑swappable QSFP+ optical transceiver designed for long-distance 40 Gigabit Ethernet transmission over standard single-mode fiber. It targets inter-data-center links, metropolitan enterprise core backbones, and service provider transport networks requiring up to 40 km reach. Integrated DOM/DDM delivers continuous real-time monitoring of key optical operating parameters for simplified network maintenance and fault diagnostics.
2. Hardware & Software Compatibility
Supported Host Platforms
Cisco Nexus 7000 / 9000 Series Switches; Catalyst 9000 Series Switches; ASR 1000 Series Routers; UCS Fabric Interconnects and other network hardware equipped with QSFP+ ports supporting 40 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 QSFP+ MSA and SFF‑8472 digital diagnostic monitoring functions.
Supported Fiber Media
Single‑Mode Fiber (SMF) G.652 (9/125μm) only; incompatible with multi-mode fiber.
Connector Type
Duplex LC UPC optical connector
3. Physical & Optical Performance Specifications
Form Factor
Hot‑swappable QSFP+, compliant with SFF‑8436 MSA
Optical Interface
-
CWDM Channel Wavelengths: 1271 nm, 1291 nm, 1311 nm, 1331 nm
-
Electrical Lane Rate: 4 × 10.3125 Gbps, aggregate 41.2 Gbps
-
Supported Rates: 40GBASE Ethernet and OTU‑3
-
Operating Mode: Native 40G only; breakout function disabled
Maximum Transmission Distance
-
Up to40 kmover standard G.652 single-mode fiber
Optical Power Budget (per individual lane)
-
Average Transmit Optical Power: -2.7 dBm ~ +4.5 dBm
-
Minimum Receiver Sensitivity: -21.2 dBm
-
Maximum Allowable Received Optical Power: -4.5 dBm
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)
-
Operating Temperature:0°C ~ +70°C (32°F ~ 158°F)
-
Storage Temperature: -40°C ~ +85°C (-40°F ~ 185°F)
-
Relative Humidity: 5% – 95%, non‑condensing
-
Maximum Operating Altitude: 3,000 meters
Typical Power Consumption
4. Supported Functional Capabilities
Transport Support
Wire-speed full-duplex native 40GBASE-ER4 Ethernet + OTU‑3 transport;4×10G breakout mode NOT supported
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
-
Long-distance point-to-point 40GE interconnections between geographically separated data centers
-
Metropolitan enterprise core backbone inter-building fiber links up to 40 km
-
Service provider carrier-grade transport links supporting OTU‑3
-
Campus-wide long-haul 40G core network deployments over single-mode fiber
-
WAN edge high-speed aggregation for enterprise and cloud operators
6. Regulatory & Compliance Certifications
-
Safety Standards: UL 60950‑1, IEC/EN 60950‑1, CSA C22.2 No.60950‑1
-
EMC Compliance: CE Mark, FCC Part 15 Class A, ICES‑003 Class A
-
Laser Safety: Class 1 Laser Product conforming to IEC 60825‑1
-
Industry Standards: IEEE 802.3ba, SFF‑8436, SFF‑8472
-
Environmental Regulation: RoHS compliant, WEEE directive compliant
7. Standard Factory Package Contents
-
Cisco QSFP-40G-ER4 QSFP+ Optical Transceiver
-
Hardware Installation Guide
-
Safety and Regulatory Documentation
Duplex LC single-mode fiber patch cables sold separately. Breakout cabling cannot split this module into independent 10G ports.
Model Comparison Reference
-
QSFP-40G-ER4: Duplex LC SMF CWDM, 40km, supports 40G Ethernet + OTU‑3, no breakout
-
QSFP-40G-LR4: Duplex LC SMF CWDM, 10km, supports 40G Ethernet + OTU‑3
-
QSFP-40G-LR4-S: Enterprise variant, 10km SMF, native 40G only, no OTU‑3
-
QSFP-40G-CSR4: MPO multi-mode extended reach parallel transceiver with breakout support
-
QSFP-40G-SR-BD: Duplex LC multi-mode BiDi short-reach transceiver
UNSPSC Classification Code
43222618 – Cisco QSFP-40G-ER4 CWDM extended-reach single-mode QSFP+ transceiver with DOM, hot-swappable 40 Gigabit optical module for inter-data-center, metro backbone and carrier transport networking.
Hardware Warranty
Genuine Cisco transceivers are covered under Cisco limited hardware warranty. Warranty terms for refurbished units follow respective reseller agreements.
|
