Keywords: IEEE registration, FC and SCSI World-wide name, IEEE RAC meeting, WWN, NAA

Bob Snively bob.snively at Eng.Sun.COM
Sun Oct 27 12:14:54 PST 1996

* From the SCSI Reflector (scsi at, posted by:
* bob.snively at Eng.Sun.COM (Bob Snively)

To:		Fibre Channel reflector
		SCSI reflector
		Serial Solutions reflector
		SFF reflector

From:		Bob Snively

Subject:	Meeting with IEEE Registration Authority Committee
		about FC and SCSI usage of OUI.

Date:		October 23, 1996



	OUI = Organizationally Unique Identifier (knew you had to ask)
	RAC = Registration Authority Committee
	FAQ = [Answers to] Frequently Asked Questions
	EUI-64 = A 64-bit world-wide unique number based on the OUI
	FC = Fibre Channel (X3T11)
	SCSI = Small Computer Systems Interface (X3T10)

1)	After careful consideration, the IEEE RAC has embraced the use of
	the OUI/Company Identifier for Fibre Channel and SCSI activities.
	Most of X3T11's objections to the use of the IEEE identifier have
	long since been resolved.  The identifier is easy to buy and use.
	Bob Snively has inherited the action item of preparing a
	properly defined tutorial for the Fibre Channel and SCSI use
	of the OUI.

2)	Since FC-PH uses the formats already defined, plus the two that
	Bob Snively will define, it is likely that FC attached SCSI
	devices will use the same FC-PH identifier format for
	the SCSI identifier.  These will be clearly shown in the
	tutorial document.

	Since P1212 recommends the use of the EUI-64 formats, it is possible
	that IEEE 1394 attached SCSI devices will use the EUI-64 for the
	SCSI identifier.

3)	IEEE has picked up the action item of improving their web site's
	presentation of the registration FAQ and registration procedure,
	so that it will include all the information and tutorials necessary
	to properly use an IEEE OUI/Company Identifier.

4)	FYI:  OUI and Company Identifier are two different representations
	for the same registration number, one best suited for and most
	familiar to LAN users, the other best suited for and most familiar
	to I/O users.  This is no big deal, but is part of the clarification
	that will be provided by IEEE in its web pages.  The 24-bit number
	costs $1000 and can be obtained through a registration procedure
	on the web.


1)	Bob Snively to prepare FC and SCSI tutorials.  These tutorials will
	be circulated among knowledgable tutorial writers for review
	before being distributed to the FC and SCSI committee.  Some
	additional FC proposals may come from this work.

2)	IEEE staff to clarify the web site's information about registration.

3)	IEEE staff to place tutorials and public assignment information 
	on web site.


On October 23, 1996, I met with the IEEE Registration Authority
Committee (RAC).  The agenda of this meeting included:

	1)	Application of OUI to 64-bit addressing schemes, aka EUI-64

	2)	Application of OUI to Fibre Channel technology

	3)	Application of OUI to SMPTE 298M

	4)	IEEE in ISO tree

	5)	Transfer of field-type registration from Xerox to IEEE.

	6)	Administrative issues

		List of OUI's available on web
		Application revision
		Usage policies


1)	Application of OUI to 64-bit bit addressing schemes, aka EUI-64.

	The EUI-64 is a unique number, derived from the OUI.  It was
	created for identifiers like those specified by IEEE 1212 CSR,
	IEEE 1394, and IEEE 1394.2.  SCSI is also allowed to use this
	identifier.  Dallas Semiconductor has a product called the
	DS 2502, which provides 1 K bits of "add-only" serially
	accessed memory.  A version of this product can be purchased 
	with unique EUI-64 values for use by any product that needs a
	unique identifier.  Each individual piece is identified by
	a completely unique Dallas Semi registration number as well as 
	the EUI-64 number.  DS 2502's
	can also be purchased with other number initializations and
	sequences as required, including FC world-wide name values
	(although parts having those patterns have not yet been developed).  
	Costs are reasonable.  

	IEEE is satisfied that Dallas Semiconductor is capable of
	guaranteeing uniqueness in each particular component.  IEEE is
	satisfied with the indemnification paragraphs agreed to for this
	type of activity.

	It was suggested that any new companies producing controlled
	numbers derived from IEEE OUIs for sale to other companies would
	have to go through the same qualification and meet the
	same requirements that Dallas Semiconductor has completed.

2)	Application of OUI to Fibre Channel and SCSI technology.

	The use of OUI's in a manner similar to that documented by
	Bob Snively (enclosed) to identify FC ports and nodes and to
	identify SCSI and other peripheral devices is accepted in 
	principle by the RAC.

	Bob Snively shall create a tutorial that documents this usage
	in the traditional tutorial manner.  He will arrange to have it
	reviewed by experienced tutorial writers and publish it for
	fibre channel and SCSI usage.

	IEEE had been concerned that the Naming Authority Address (NAA)
	values specified by FC would become a part of the IEEE registration
	responsibility.  Bob Snively indicated that these values were the
	sole responsibility of X3T11.  Similarly the type indicators in SCSI
	are the sole responsibility of X3T10.  

	It was noted that the OUI is actually a 24 bit value with
	two bits reserved for unique ethernet usage.  For all non-ethernet
	usage, these bits are reserved and shall be zero.

	Note all the other problems associated with this method of
	registering identifiers appear to have been corrected by
	IEEE in the last few years.

3)	Application of OUI to SMPTE 298M

	This is not particularly relevant to the present discussion.
	Basically, SMPTE wants to place the OUI correctly in the ISO
	identification tree.  

4)	Transfer of field-type registration from Xerox to IEEE

	This is not relevant to the present discussion.  It is an
	ethernet registration item.

5)	Administrative issues

	VME-64 apparently uses OUI.  A tutorial is required.

	An electronic copy of all those companies that have not requested
	confidentiality is available to cross reference to their 
	OUIs.  The original confidentiality requirement was associated with
	IEEE 48-bit LAN addresses, where the number of devices actually
	identified was potentially trade-secret marketing information.
	Very few companies still insist on this marketing confidentiality,
	since the number space is so huge.  Those that still insist on this
	will not be on the electronic listing.  It has been proposed
	that this list be made available on the web.  

	The uses of the OUI are not policed.  However, it is considered
	essential that there be no duplication of any identifier.  A
	company's OUI is to be used for all identification purposes within
	the company, including 48-bit LAN, EUI-64 identifiers, and FC-PH
	identifiers.  Note that the format may create similar bit 
	patterns in registers or on links, but the value interpreted
	according to the tutorial will always be unique.  As a matter of
	policy, it is desirable to use up the identification spaces
	completely.  The company is responsible for registering the
	usage of the vendor specific numbers.

	Historically, there have been few foulups and IEEE has worked
	with the affected companies to straighten those out.  Most
	invalid usage has been inadvertent.

	The web site has some clarity issues which are being addressed
	by IEEE.  The reference is rather obscurely accessed through: ->  "Standards" -> "IEEE Standards FAQs" -> "OUIs"


ATTENDANCE:  (spelling may not be correct for some people, my apologies.
	      relevant functions may not be correct for some people, again
	      my apologies.)

	Gary Robinson	   Chair of IEEE RAC	Sun Microsystems, IEEE
	Mike Wenzel	   			HP
	Jim Carlo	   Chair of 802 LANS	TI
	Bob Lynch	   Chair of ANSI RAC	DEC
	John Adams	   EUI-64 products	Dallas Semi
	Bernhardt Linke	   EUI-64 products	Dallas Semi
	Charlie Hohenshelt EUI-64 consultant	RSVP
	David James	   1394/1212 expert	Apple
	Bob Snively	   FC/SCSI		Sun Microsystems
	Karen Rupp	   			IEEE
	Andy Salem	   Managing Director	IEEE
	Jerry Walker	   Mgr, RAC function 	IEEE
	Linda Gargiulo	   			IEEE
	Anita Ricketts				IEEE
	Judy Gorman				IEEE
	Mick Sieman	   802 expert	

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