Knowledge Base

Title Authors Category Updated
BER Testing: How Many Bits Are Enough? Andy Baldman

The purpose of this article is to discuss the concept of Bit Error Ratio testing, and will explain, using a minimum amount of math, the answer to the fairly common question: "How many bits do I need to send in order to verify that a devices exceeds a given BER?"

Theses June 29, 2012
Technical Report - TR0106 Anshul Chadda

Design, Implementation, and Performance Analysis of Session Layer Protocols for SCSI over TCP/IP.

Theses June 29, 2012
Technical Report - TR0101 Ashish Palekar

Design and Implementation of a SCSI Target for Storage Area Networks.

Theses June 29, 2012
Introduction to iSCSI UNH-IOL

An informative presentation on the basics of iSCSI.

Tutorials June 29, 2012
InterNetworking 2003 Presentation Anshul Chadda, Ashish Palekar, Narendran Ganapathy, Robert D.Russell

Design, Implementation, and Performance Analysis of the iSCSI Protocol for SCSI Over TCP/IP.

White Papers June 29, 2012
Implementation and Comparison of iSCSI Over RDMA Ethan Burns

iSCSI is an emerging storage network technology that allows for block-level access to disk drives over a computer network. Since iSCSI runs over the very ubiquitous TCP/IP protocol it has many advantages over its more proprietary alternatives. Due to the recent movement toward 10 gigabit Ethernet, storage vendors are interested to see how this large increase in network bandwidth could benefit the iSCSI protocol.

In order to make full use of the bandwidth provided by a 10 gigabit Ethernet link, specialized Remote Direct Memory Access hardware is being developed to offload processing and reduce the data-copy-overhead found in a standard TCP/IP network stack. This thesis focuses on the development of an iSCSI implementation that is capable of supporting this new hardware and the evaluation of its performance.

This thesis depicts the approach used to implement the iSCSI Extensions for Remote Direct Memory Access (iSER) with the UNH iSCSI reference implementation. This approach involves a three step process: moving UNH-iSCSI from the Linux kernel to the Linux user-space, adding support for the iSER extensions to our user-space iSCSI and finally moving everything back into the Linux kernel. In addition to a description of the implementation, results are given that demonstrate the performance of the completed iSER-assisted iSCSI implementation.

Theses June 29, 2012
Proceedings of the 5th Annual Linux Showcase & Conference Ashish Palekar, Narendran Ganapathy, Anshul Chadda, Robert D. Russell

Design And Implementation Of A Linux SCSI Target For Storage Area Networks.

White Papers June 29, 2012
100BASE-TX: Physical Medium Dependent

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

Tutorials June 28, 2012
Clock Synchronization Terminology Jeff Laird

Terms used when discussing PTP

White Papers June 28, 2012
PTP Background and Overview Jeff Laird

Terms used when discussing PTP

White Papers June 28, 2012
IEEE 1588 tutorial (slide deck, from 2005)

John Eidson's general overview of the technology, the standard, and applications, plus other topics. Hosted at NIST. This regards only PTP version 1. (Version 2 is from 2008.)

External Links June 27, 2012
glossary of Time and Frequency terms (NIST)

This is an informal glossary for educational purposes. It is reviewed by experts but is not intended to replace more formal definitions in standards. (Click the “Notes” link at the website for details.)

External Links June 27, 2012
IEEE 802.1 Website

The official IEEE website reference.

External Links June 27, 2012
802.1s Multiple Spanning Tree UNH-IOL Bridge Functions Consortium

This presentation provides a high level overview and introduction to Multiple Spanning Tree, and related technologies.

Tutorials June 27, 2012
Simulating Gaussian Crosstalk for DSL Testing Timothy R. Clark

The presence of crosstalk is a major detriment to the performance of Digital Subscriber Line (DSL) transceivers. It is therefore important to test performance under a wide variety of crosstalk scenarios. This thesis presents the development of a crosstalk noise generation system as a tool for DSL performance testing. Where many commercially available solutions are limited to specific testing needs, the system presented here is universal and can simulate virtually any noise scenario conceivable for DSL deployment.
Several requirements for the accurate frequency domain modeling of DSL crosstalk are presented. The time domain properties of crosstalk were also studied with particular attention paid to the amplitude distribution. The importance of a Gaussian amplitude distribution and the limiting effect of a finite-length pseudo-random crosstalk sequence on the "tail" of the Gaussian distribution were investigated. A method of forcing finite-length crosstalk sequences to have a "near-Gaussian" amplitude distribution is proposed.

Theses June 27, 2012
IEEE 802.1 Bridging Overview UNH-IOL Bridge Functions Consotium

This presentation provides a basic overview of IEEE 802.1 Bridging, and related technologies.

Tutorials June 27, 2012
802.1Q VLAN and GVRP UNH-IOL Bridge Functions Consortium

This presentation provides a high level overview and introduction to VLAN and GVRP, and related technologies.

Tutorials June 27, 2012
802.1D (Classic) Spanning Tree UNH-IOL Bridge Functions Consortium

This presentation provides a high level overview and introduction to Spanning Tree, and related technologies.

Tutorials June 27, 2012
GPON: Why Conformance and Interoperability Testing are Key Lincoln Lavoie

An overview of Gigabit Passive Optical Networks (GPON) conformance and interoperability capabilities. A brief introduction to the power of PONs.

Tutorials June 27, 2012
802.1X (Port-Based Authentication) UNH-IOL Bridge Functions Consortium

This presentation provides a high level overview and introduction to Port-Based Authentication, and related technologies.

Tutorials June 27, 2012
802.1ad Provider Bridges UNH-IOL Bridge Functions Consortium

This presentation provides a high level overview and introduction to Provider Bridges.

Tutorials June 27, 2012
802.3ad Link Aggregation UNH-IOL Bridge Functions Consortium

This presentation provides a high level overview and introduction to Link Aggregation, and related technologies.

Tutorials June 27, 2012
DSL: Simulation Techniques and Standards Development for Digital Subscriber Line Systems Dr. Walter Y. Chen

From the back cover: "Digital Subscriber Line technology heralds the age of digital communication, providing a faster, more efficient method of transmitting data over regular telephone lines. The widespread adoption of DSL technology increases the demand for subject-specific, in-depth knowledge of this breakthrough in digital communication. DSL: Simulation Techniques and Standards Development for Digital Subscriber Line Systems arms the communications and networking engineer with the quintessential information for implementing DSL systems . . . "

Recommended Textbooks June 26, 2012
Newton Harry Newton with Ray Horak contributing editor

From the back cover: "I wrote this book for those of us in the world's most exciting industries - telecommunications, networking and the Internet. I deliberately didn't write a book that only geeks could understand. I wrote a business book that you and I could understand. I explain the technical concepts in non-technical , business language that anyone in business (whether buying, selling or investing) should be able to understand. Some of my definitions are short. Some are encyclopedic. My focus is 720 practical. What the term means. What the technology does. What benefits the technology confers. which pitfalls to watch for. Use this book in your day-to-day business life. Dip into it before a meeting with a vendor, a customer, a broker or a boss. I've got 19 years in this book. My readers and my contributing editor, Ray Horak, have contributed enormously over the years. By now, all of us have made this dictionary pretty darn good. I'm proud of this edition."

Recommended Textbooks June 26, 2012
PPP Design, Implementation, and Debugging, Second Edition James Carlson

From the back cover: "PPP Design, Implementation, and Debugging, Second Edition, is a complete and convenient resrouce for netowrk system designers and administrators. This book contains everything you need to know to work with the Point-to-Point Protocol (PPP), one of the most important Internet protocols in use today. Inside you'll find clear explanations of the underlying concepts, practical implementation information, and valuable debugging techniques to keep your PPP connections running smoothly, efficiently, and uninterrupted."

Recommended Textbooks June 26, 2012