Cisco Compatible QSFP-100G-ER4L-S | 100GBASE-ER4L QSFP28 LC SMF 40km Transceiver
Cisco Compatible Transceivers

Cisco Compatible QSFP-100G-ER4L-S | 100GBASE-ER4L QSFP28 LC SMF 40km Transceiver

Buy Cisco compatible QSFP-100G-ER4L-S 100GBASE-ER4L QSFP28 transceiver for Cisco Nexus, ASR and NCS platforms. Duplex LC SMF 100G optical module up to 40km.

Cisco Compatible QSFP-100G-ER4L-S

100GBASE-ER4L QSFP28 Transceiver Module | Duplex LC | 25km-40km SMF




Product Overview

The Cisco compatible QSFP-100G-ER4L-S is a high-performance 100GBASE-ER4L QSFP28 optical transceiver module designed for ultra-long-range 100 Gigabit Ethernet transmission over single-mode fiber (SMF).
Using advanced 4-lane CWDM optical technology, the module multiplexes four optical wavelengths onto a duplex LC fiber pair, enabling stable and reliable 100Gbps connectivity over distances from 25km up to 40km on standard single-mode fiber.
The QSFP-100G-ER4L-S is ideal for:
  • Data center interconnects (DCI)
  • Metro transport networks
  • Telecom backbone infrastructure
  • ISP aggregation networks
  • Enterprise campus interconnections
  • Cloud computing infrastructure
  • Long-distance carrier Ethernet deployments
Compared with LR4 optics, the ER4L solution provides significantly extended transmission reach while maintaining compact QSFP28 high-density deployment.



Key Features

  • Supports 100GBASE-ER4L Ethernet
  • QSFP28 hot-pluggable form factor
  • Duplex LC optical connector
  • 4-channel CWDM optical transmission
  • Supports 25km to 40km transmission over SMF
  • LAN-WDM/CWDM optical architecture
  • Integrated Digital Optical Monitoring (DOM)
  • Low power consumption
  • High-reliability long-distance optical design
  • Fully compliant with QSFP28 MSA standards
  • 100% tested for Cisco compatibility



Compatible Cisco Platforms

The Cisco compatible QSFP-100G-ER4L-S is compatible with a wide range of Cisco networking platforms including:

Cisco Nexus Series

  • Cisco Nexus 3232C
  • Cisco Nexus 93180YC-EX
  • Cisco Nexus 9336C-FX2
  • Cisco Nexus 9364C
  • Cisco Nexus 9500 Series

Cisco Catalyst Series

  • Cisco Catalyst 9500 High Performance Series
  • Cisco Catalyst 9600 Series

Cisco ASR & NCS Series

  • Cisco ASR 9000 Series
  • Cisco NCS 5500 Series
  • Cisco NCS 540 Series

Cisco UCS Platforms

  • Cisco UCS Fabric Interconnect 6400 Series
  • Cisco UCS X-Series
  • Cisco UCS C-Series Rack Servers

Cisco MDS Storage Networking

  • Cisco MDS 9700 Series
Compatibility may vary depending on Cisco hardware model and software version.



Technical Specifications

Parameter
Description
Part Number
QSFP-100G-ER4L-S
Form Factor
QSFP28
Data Rate
100Gbps
Optical Standard
100GBASE-ER4L
Optical Technology
CWDM / LAN-WDM
Fiber Type
Single-Mode Fiber (SMF)
Wavelength
1295nm-1310nm
Max Distance
25km-40km
Connector Type
Duplex LC
DOM Support
Yes
Power Consumption
< 5.5W
Hot Swappable
Yes
Operating Temperature
0°C to 70°C
Compliance
QSFP28 MSA, RoHS



Product Advantages

Ultra-Long 100G Transmission

Supports stable 100GbE transmission up to 40km over standard SMF.

Efficient CWDM/LAN-WDM Technology

Provides reliable wavelength multiplexing for high-speed long-distance networking.

Simplified Duplex LC Infrastructure

Uses standard LC connectors for easier deployment and lower cabling complexity.

Carrier-Grade Reliability

Designed for telecom, ISP, cloud, and enterprise backbone applications.

Proven Cisco Compatibility

Fully tested with Cisco switches, routers, and transport platforms.



Typical Applications

  • Long-distance data center interconnects
  • Metro transport networks
  • ISP backbone infrastructure
  • Telecom aggregation
  • Enterprise campus interconnections
  • Cloud infrastructure connectivity
  • Carrier Ethernet networks
  • High-capacity WAN uplinks



Quality Assurance

Every Cisco compatible QSFP-100G-ER4L-S module undergoes:
  • Optical performance testing
  • Cisco interoperability verification
  • DOM functionality validation
  • Wavelength calibration testing
  • Reliability and aging stress testing



Ordering Information

Part Number
Description
QSFP-100G-ER4L-S
Cisco Compatible 100GBASE-ER4L QSFP28 Transceiver, LC SMF, 25km-40km



FAQ

What transmission distance does QSFP-100G-ER4L-S support?

It supports transmission distances from 25km up to 40km over single-mode fiber.

What connector type does the module use?

It uses a duplex LC optical connector.

What optical technology is used?

The module uses CWDM/LAN-WDM optical transmission technology.

Does it support DOM monitoring?

Yes. Digital Optical Monitoring (DOM) is supported.

Which Cisco platforms support this module?

It is widely deployed in Cisco Nexus, Catalyst, ASR, NCS, UCS, and MDS platforms.


Cisco compatible QSFP-100G-ER4L-S, QSFP-100G-ER4L-S compatible, Cisco 100G ER4L module, 100GBASE-ER4L QSFP28, Cisco QSFP28 long reach transceiver, Cisco 100G 40km optics, Cisco Nexus 100G ER4L module, Cisco compatible QSFP28 SMF module, 100G ER4L optical transceiver, QSFP28 40km module