From the category archives:

WhitePapers

iSCSI

Introduction to iSCSI
As Ethernet begins to enter into the Storage world a new protocol has been getting a lot of attention. The Internet Small Computer Systems Interface or iSCSI, is an end-to-end protocol for transporting storage I/O block data over an IP network. The protocol is used on servers (initiators), storage devices (targets), and protocol transfer [...]

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XAUI interface – Introduction to XAUI

XAUI, the 10 Gigabit Attachment Unit Interface, is a technical innovation that dramatically improves and simplifies the routing of electrical interconnections. Developed by the IEEE 802.3ae 10 Gigabit Ethernet Task Force, XAUI delivers 10 Gb/s of data throughput using four differential signal pairs in each direction. Its compact nature and robust performance makes it ideal [...]

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10 Gigabit Ethernet Technology Overview (Whitepaper)

Please note this paper may be partially outdated (Revision 2, Draft A • April 2002)

10 Gigabit Ethernet Technology Overview
From its origin more than 25 years ago, Ethernet has evolved to meet the increasing demands of packet-switched networks. Due to its proven low implementation cost, its known reliability, and relative simplicity of installation and maintenance, its [...]

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Gigabit Ethernet

Gigabit ethernet is becomming more and more popular. The accelerating growth of LAN traffic is pushing network administrators to look to higher-speed network technologies to solve the bandwidth crunch. These administrators—who typically have either Ethernet or FDDI backbones today—have several alternatives to choose from. Although each network faces different issues, Gigabit Ethernet meets several key [...]

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Optical Fiber and 10 Gigabit Ethernet – part 4

This is the 4rd page of the whitepaper Optical Fiber and 10 Gigabit Ethernet.
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10 Gigabit Ethernet Fiber Design Considerations
Key factors to consider in the design of 10 Gigabit Ethernet networks are:

The network topology, including operating distances, splice losses and numbers of connectors (i.e. the link power budget).
The fiber cabling type (i.e. single-mode [...]

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Optical Fiber and 10 Gigabit Ethernet – part 3

This is the 3rd page of the whitepaper Optical Fiber and 10 Gigabit Ethernet.
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Multimode Fiber and 10 Gigabit Ethernet
The IEEE 802.3ae 10 Gigabit Ethernet specification includes a serial interface referred to as 10GBASE-S (the “S” stands for short wavelength) that is designed for 850 nm transmission on multimode fiber. Table 2 provides [...]

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Optical Fiber and 10 Gigabit Ethernet – part 2

This is the second page of the whitepaper Optical Fiber and 10 Gigabit Ethernet.
Part1: here
MultiMode Fiber
Multimode fiber is used extensively in the campus LAN environment where distances between buildings are 2 km or less. The broad market penetration and acceptance of 62.5/125 micron multimode fiber was initiated by its inclusion in the Fiber Distributed Data [...]

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Optical Fiber and 10 Gigabit Ethernet

Introduction
As 10 Gigabit Ethernet (10GbE) is introduced into networks the physical limitations and properties of optical fiber introduce new challenges for a network designer. Due to the increased data rate, fiber effects, such as dispersion (intermodal, chromatic or polarization), become a factor in the achievable distances of 10GbE links. This leaves the network designer with [...]

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Degraded Signal Testing

Introduction
Two different testing philosophies have evolved in our communications networks: a "perfection" approach, under which the Device Under Test (DUT) is subjected to signals produced by test equipment whose performance exceeds the DUT’s required specifications and a "worst-case" approach that subjects the DUT to signals that simulate those likely to be encountered in the field.
Traditionally, [...]

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Ethernet – The Next Generation WAN Transport

Ethernet Transport and its Service Technology
To understand why Ethernet is a viable transport for the WAN, it’s important to note the various technology that surrounds and supports Ethernet.
 
Figure 1 shows Ethernet’s circle of technology. At the core, Ethernet is supported within fiber, copper, and even wireless media. In addition, bandwidth support for Ethernet can range [...]

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