Troubleshooting Numbers for Ethernet

What are the troubleshooting numbers?

The Ethernet troubleshooting numbers are lists of Type codes, vendor codes, LSAP codes, multicast addresses, etc. that can help identify and track down machines and protocols in use on the network.

For example, the vendor codes make it possible to identify the manufacturer of a given Ethernet card. That can help you find out which machine on your network may be causing problems, by identifying the vendor of the Ethernet interface in the machine.

Locally Stored Copies:

Note! The locally stored copies are kept here to provide access when the network path to online copies is slow or down. The locally stored copies are out of date.

This page provides access to various troubleshooting numbers for Ethernet. These numbers include Type codes, vendor codes, LSAP/DSAP numbers, and multicast addresses.

If your Web browser supports a search feature, you can use it to search through these lists for a specific Type code, vendor code, or address.

The IEEE OUI List
The IEEE LSAP List
The Cisco LSAP List
Michael Patton's List of Ethernet Numbers

Online Access:

Online access is provided to download the latest copies. Be advised that FTP access may fail due to limits on the number of simultaneous users allowed at anonymous FTP servers.

Web Access to IEEE List of Organizationally Unique Identifiers (OUIs). This will retrieve an online copy of these troubleshooting numbers.

Web Access to Michael Patton's List of OUIs and other Ethernet numbers. This will retrieve an online copy of these troubleshooting numbers.

Glenn Smith's List of OUIs. A useful list of Ethernet OUIs that provides Web-based searching on OUI and vendor name.

IEEE 802 Numbers of Interest. This list is part of the Assigned Numbers RFC. The most recent Assigned Numbers RFC is RFC1700.

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