QSFP-100G-ER4L-S

Cisco 100G ER4-Lite QSFP Transceiver, 40KM reach over SMF, Duplex LC

The Cisco QSFP-100G-ER4L-S enables extended 40km 100GbE connectivity over duplex single-mode fiber.

QSFP-100G-ER4L-S Overview

The Cisco QSFP-100G-ER4L-S module is designed to support 100Gbps links up to lengths of 40km over duplex single-mode fiber. It uses a 4-channel parallel optics architecture with support for FEC on the host system.

Operating at 40km reach, the QSFP-100G-ER4L-S allows customers to connect data centers up to 25 miles apart over existing dark fiber infrastructure. This avoids costly leasing of extra fiber while simplifying scalable deployment.

The QSFP module offers backward compatibility with multiple 100G form factors like CPAK, CFP, and QSFP. It interoperates with IEEE 100GBASE-LR4 optics up to 10km and Cisco CPAK-100G-ER4L up to 25km reach.

Quick Specifications

Feature	Specification
Data Rate	100Gbps
Fiber Type	Single mode fiber
Connectors	Duplex LC
Wavelengths	4x 25Gbps wavelengths
Link Length	40km (with FEC)<br>30km (no FEC)
Power Consumption	4.5W

QSFP-100G-ER4L-S Features and Benefits

Extended 40km reach over duplex single-mode fiber
Backward compatibility with multiple 100G form factors
Interoperates with LR4 up to 10km and ER4Lite up to 25km
QSFP pluggable module with low power draw

Compatible Products

Part Number	Description
C9500-12Q	Catalyst 9500 12-port 40G/100G Module
N9K-C9508	Cisco Nexus 9500 Series Switches

Full Specifications

Feature	Specification
Standards	IEEE 802.3bm 100GBASE-ER4
Data Rate	100Gbps
Signaling Rate per Lane	25Gbps
Fiber Type	Single mode fiber
Connectors	Duplex LC
Wavelengths	1295, 1300, 1304, 1309 nm
Link Length	40km (with FEC) 30km (no FEC)
Power Consumption	4.5W
Operating Temperature	0°C to 70°C
Storage Temperature	-40°C to 85°C

QSFP-100G-ER4L-S Licensing

Standard Cisco licensing applies. No special licensing required.

Warranty Information

1 year hardware warranty with option to extend to 5 years.

Installation and Configuration

Plug and play support. May require FEC enablement on host.

Brand

Cisco Systems

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