Knowledge Base

Titlesort descending Authors Last Update Category
Clause 24: 100BASE-X Physical Coding Sublayer (PCS)

An overview of the 100BASE-TX PCS created by the UNH-IOL.

January 1, 2004 Tutorials
Clause 28 & 40 Auto-Negotiation: An Introduction to the Auto-Negotiation process Jeff Lapak

A brief introduction to auto-negotiation created by the UNH-IOL.

January 1, 2004 Tutorials
Clause 28 Auto-Negotiation

A brief tutorial the covers the basics behind Clause 28:Auto-Negotiation.

June 29, 2012 Tutorials
Clause 28 Auto-Negotiation Basic Introduction Matthew Hersh

View this for a basic introduction to Copper and Fiber Ethernet Auto-Negotiation.

August 5, 2005 Tutorials
Clause 37: Auto-Negotiation David Estes

An introduction to the Clause 37 Auto-Negotiation Process.

January 1, 2004 Tutorials
Clause 40 Auto-Crossover White Paper Matthew Hersh

A brief tutorial that covers the basics behind the Clause 40 Automatic MDI/MDI-X Configuration.

April 18, 2006 Tutorials
Clause 40: 1000BASE-T Physical Medium Attachment (PMA) Sublayer

1000BASE-T PMA overview (location in the OSI stack, interface with PCS, interface with Auto-Negotiation, PAM-5 Encoding Scheme, PMA Sublayers Functionality and Functions, and PMA Electrical Specifications).

January 1, 2004 Tutorials
Clock Synchronization Terminology Jeff Laird

Terms used when discussing PTP

June 28, 2012 White Papers
Comparison of DCBX Versions Daniel Shea

A comparison of the baseline versus the IEEE standard versions of Data Center Bridging Capabilities Exchange.

September 11, 2012 Tutorials
Comparison of Environments on 802.11 Throughput Performance Diana Lewis, Justin Rebe, Jeremy deVries

The chaotic nature of the radio frequency medium of 802.11 wireless networks makes it problematic to obtain accurate and precise repetition of performance tests and measurements. Environmental variables that deeply influence link performance must be addressed before throughput testing can be accurately measured across various devices. An RF shielded room with anechoic foam provides the most ideal environment for throughput tests compared to either an RF shielded room without foam or an open air laboratory. Location within the RF shielded room with anechoic foam was shown to have a negligible effect on performance, but using an RF absorbing rubber mat under a device was shown to reduce reflections, producing an optimal environment for throughput testing.

September 18, 2014 White Papers