Definition

40 Gigabit Ethernet (40GbE)

Part of the Networking and communications glossary:

40 Gigabit Ethernet (40GbE) is a standard that enables the transfer of Ethernet frames at speeds of up to 40 gigabits per second (Gbps). The 40GbE standard is intended for local server connectivity; a more robust standard, 100 Gigabit Ethernet (100GbE), is intended for Internet backbones.

In 2007, the IEEE Higher Speed Study Group started work toward 40GbE and 100GbE standards with the goal of increasing available bandwidth while maintaining maximum compatibility with existing interfaces and network management principles. Another goal was to provide for increased working distances to satisfy the requirements of the intended applications. The standard was approved in 2010.

Previous versions of Ethernet could use standard Category 6 (Cat 6) copper wiring and RJ45 connectors, which have been around for decades and are readily deployed. 40 GbE runs on Quad Small Form Factor Pluggable (QSFFP) cabling, a high-density fiber connector with 12 strands of fiber.

According to the task force, 40GbE and 100GbE fulfill the following requirements and objectives:

  • Preserve existing 802.3 frame format, minimum size, and maximum size.
  • Support high-bandwidth applications such as video on demand (VoD) and high-performance computing (HPC).
  • Support high-speed switching, routing, and application functions in data centers.
  • Exhibit a bit error rate (BER) of 10-12 or better (a maximum of one error bit per 1,000,000,000,000 bits transmitted).
  • Provide support for optical transport network (OTN).
  • Provide specifications for operation over single-mode optical fiber, laser optimized multimode optical fiber, copper cables, and backplanes.

 

This was last updated in September 2013
Contributor(s): Stan Gibilisco
Posted by: Margaret Rouse

Related Terms

Definitions

  • cloud storage gateway

    - A cloud storage gateway is a hardware- or software-based appliance that serves as a bridge between local applications and remote cloud-based storage. The appliance is located on the customer’s prem... (SearchCloudStorage.com)

  • UCC (unified communications and collaboration)

    - UCC (unified communications and collaboration) is versatile conferencing software that takes the various methods used in conference calls such as text, audio, video and virtual white boards and mak... (WhatIs.com)

  • frequency jammer

    - Frequency jamming is the disruption of radio signals through use of an over-powered signal in the same frequency range. When most people think of frequency jamming, what comes to mind are radio, r... (WhatIs.com)

Glossaries

  • Networking and communications

    - Terms related to networking and communications, including definitions about network protocols and words and phrases about data transmission.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question About 40 Gigabit Ethernet (40GbE) Powered by ITKnowledgeExchange.com

Get answers from your peers on your most technical challenges

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.