Cisco FET-40G 40G Fabric Extender QSFP+ Transceiver Module Ref

Name: Cisco FET-40G 40G Fabric Extender QSFP+ Transceiver Module Ref
Brand: Cisco
SKU: FET-40G
Price: 33.90 USD
Availability: InStock
Rating: 5 (11 reviews)

Mfr. Part #: FET-40G

Brand: Cisco

Condition: Refurbished

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Warranty: 90-day return/replacement

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FET-40G

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overview

specifications

faqs

reviews

overview

FET-40G Overview

CISCO - 40g Fabric Extender Transceiver - Qsfp+ Transceiver Module (FET-40G).

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specifications

Specifications

Overview

Condition	Refurbished
Brand	Cisco
Stock	In Stock

Key Features

Device Type	Qsfp+ Transceiver Module
Form Factor	Plug-in Module

Networking

Connectivity Technology	Wired
Data Link Protocol	40 Gigabit Ethernet
Data Transfer Rate	40 Gbps

Expansion / Connectivity

Interfaces	1 X Network - Lc X 2
Compatible Slots	1 X Qsfp+

Compatibility Information

Designed For	CISCO Nexus 2148t Fabric Extender, 2224tf Fabric Extender, 2224tp Fabric Extender, 2224tp Fabric Extender, Reversed Airflow Pack, 2232pp 10ge Fabric Extender, 2232pp 10ge Fabric Extender Standard Airflow Pack, 2232pp 10ge Fabric Extender, Reversed Airflow Pack, 2232tf 10gbase-t Fabric Extender, 2232tm 10gbase-t Fabric Extender, 2232tm 10gbase-t Fabric Extender, Reverse Airflow Pack, 2232tm-e 10ge Fabric Extender, 2232tp-e Fabric Extender Standard Airflow Pack, 2248pq 10ge Fabric Extender, 2248tp Fabric Extender, 2248tp Ge Fabric Extender, 2248tp Ge Fabric Extender For N5k/n2k Bundle, 2248tp Ge Fabric Extender Reversed Airflow Pack, 2248tp-e Fabric Extender, 2248tp-e Ge Fabric Extender, 2248tp-e Ge Fabric Extender Reversed Airflow Pack, 2248tp-e Ge Fabric Extender Standard Airflow Pack

faqs

Frequently Asked Questions

What is the primary function of the Cisco FET-40G QSFP+ module? +

The Cisco FET-40G is a specialized 40GbE transceiver designed for use in fabric extender uplinks. It provides high-density, low-latency connectivity specifically for Cisco Nexus switches, allowing you to connect FEX units to parent switches over multi-mode fiber infrastructure effectively.

Which cabling media is supported by the FET-40G transceiver? +

This transceiver is designed for short-reach applications using OM3 or OM4 multi-mode fiber optic cables. It utilizes an MPO/MTP connector interface, making it ideal for standard data center rack-to-rack or intra-row connections where high-bandwidth, 40G throughput is required for fabric extension.

Can the FET-40G be used for general 40G Ethernet uplinks between standard switches? +

The FET-40G is specifically engineered for Fabric Extender (FEX) connectivity. While it utilizes the QSFP+ form factor, it is optimized for the proprietary requirements of Cisco Nexus fabric extender technology. For standard 40GBASE-SR4 requirements between non-FEX switches, you should consult the compatibility matrix to ensure the specific hardware supports the FET-40G protocol.

What is the maximum reach of the FET-40G module? +

When paired with high-quality OM3 or OM4 multi-mode fiber, the FET-40G provides reliable 40G connectivity over short distances typically found within data center environments. It is engineered for low power consumption and high performance, ensuring stable fabric communication without the need for long-haul transmission capabilities.

Does the FET-40G require any special configuration on Cisco Nexus switches? +

Once inserted into a supported QSFP+ port on a Cisco Nexus switch, the module is generally recognized automatically. However, ensure your switch firmware is updated to the latest supported version to maintain compatibility with the fabric extender architecture. Proper physical link negotiation is handled by the switch's internal software.

How does the FET-40G differ from a standard QSFP-40G-SR4 module? +

While both modules share the QSFP+ form factor and MPO interface, the FET-40G is a budget-optimized version specifically tailored for FEX fabric uplinks. It is designed to offer the performance needed for fabric extension while providing a cost-effective alternative to general-purpose transceivers in specific Cisco fabric-based deployments.

Is the FET-40G hot-swappable in a production environment? +

Yes, this module supports hot-swapping, allowing for field replacement or initial installation without the need to power down your Cisco Nexus switch. This feature minimizes downtime during network maintenance or infrastructure scaling, provided that you follow standard electrostatic discharge (ESD) safety procedures during the insertion or removal process.

What environmental conditions are necessary to maintain FET-40G performance? +

To ensure peak performance and longevity, the FET-40G should operate within the standard temperature ranges defined by Cisco for data center equipment. Maintaining clean fiber ends and ensuring proper airflow through the switch chassis will prevent thermal issues and signal degradation, maintaining stable 40GbE fabric integrity.

Can I request a bulk quote for multiple FET-40G units through BuyRouterSwitch.com? +

Absolutely. For large-scale data center projects requiring a significant quantity of FET-40G transceivers, our sales team is prepared to provide competitive bulk pricing. Please reach out to us directly through our website with your volume requirements so we can tailor a quote that aligns with your procurement budget and deployment timeline.

Why should I source my Cisco networking hardware from BuyRouterSwitch.com? +

BuyRouterSwitch.com is a trusted source for high-quality enterprise networking equipment. We specialize in providing authentic hardware, ensuring that your infrastructure build-outs remain reliable and secure. By choosing us, you benefit from our streamlined ordering process and a dedicated focus on meeting the specific supply needs of IT professionals and enterprise organizations.

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