Charles Spurgeon's Ethernet (IEEE 802.3) Web Site
Information and configuration guidelines on Ethernet, Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet local area network (LAN) technology.
http://www.ethermanage.com

Moxa Technologies
Solution provider of device networking products, including device servers (serial-to-ethernet), industrial ethernet switches, multiport serial card, USB/serial hub and media converters.
http://www.moxa.com/

The Industrial Ethernet Book
The Online Industrial Ethernet Book is a Directory and Information Source for Industrial Ethernet and Embedded Internet. It features 600+ products, hundreds of contacts in 80+ countries, plus all kinds of useful information.
http://ethernet.industrial-networking.com/

Proconx
Protocol Converter & Device Server DIN-rail modules with Ethernet, Serial ports and CAN. For industrial communication applications. Highly customizable. Integrate any serial devices into the world of Web Servers, Ethernet and TCP/IP.
http://www.proconx.com

Ethernet LWL Installations
Installations-Switch mit LWL- bzw. Kupfer uplink und 4x RJ-45 Ethernet 10BaseT / Fast Ethernet 100BaseTX Ports als sinnvolle Alternative oder Ergaenzung Ihrer LWL-Verteilung - Besonders fuer Erweiterungen in
http://www.ubf.de/tget01.htm

Hewlett-Packard Industrial Ethernet
Official Hewlett-Packard site - Buy or learn about HP printers, laptops, computers, digital cameras, servers, storage, networking, software, enterprise solutions and more.
http://www.hp.com

Hirschmann - Industrial Ethernet
Die Website der Hirschmann Automation and Control GmbH
http://www.hirschmann.de/Industrial-Ethernet/index.html

International Transware
Transware is a localization and translation services partner providing a unique set of skills and experience to address the opportunities and challenges of today's global marketplace
http://www.transware.com/

Woodhead
An industrial communication solution for PC-based applications on fieldbuses and industrial networks (Profibus, Ethernet, CAN, DeviceNet).
http://www.woodhead.com/

RFC 0826
Ethernet Address Resolution Protocol: Or Converting Network Protocol addresses to 48.bit Ethernet Address for Transmission on Ethernet Hardware. D.C. Plummer. November 1982.
http://tools.ietf.org/html/rfc826