Draft tutorial for IEEE company_id based FC-PH identifiers

[Bob Snively]

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

You have raised a good question in your article of Sun Dec 1 (below).

Fortunately, if I have done everything right, the "substantially
exhausted" applies only to the IEEE Registered format and to the
first 64-bits of the IEEE Registered Extended format.

Here are the relevant paragraphs from the tutorial.

3.3 IEEE Registered Format

(Third paragraph)

	The registry mechanism should guarantee that the 
	identified company uses substantially
	all of the identifiers that can be created with a 
	single IEEE company_id 
	before a new IEEE company_id is purchased and used. 

3.4 IEEE Registered Extended Format

(Fourth paragraph)

  	The identified company should use substantially
	all of the identifiers that can be created with a 
	single IEEE company_id and the VSID before a new 
	IEEE company_id is purchased and used. The
	vendor specified identifier extension may be used sparsely or assigned
	by the identified object as long as uniqueness of the full 128-bit 
	IEEE registered extended identifier is guaranteed.

As I read farther into my mail, I see that Mike Wenzel has provided
the background for the answer.

Bob




>* From the SCSI Reflector (scsi at symbios.com), posted by:
>* ROWEBER at acm.org
>*
>
>If IEEE expects companies to use a single company_id until the number space
>based on that company_id is "substantially exhausted", then will IEEE expect
>SCSI implementations to use substantially all values associated with an
>IEEE Registered Extended format?  Or, will IEEE be generous and allow
>a company to obtain a new company_id when the number space associated
>with the IEEE Registered Name format is substantially exhausted?
>
>Stated differently, will IEEE (by virtue of their "substantially exhausted"
>requirement) force FC implementations to use the 128-bit format instead of
>the 64-bit format?
>
>Thanks.
>
>Ralph...
*
* For SCSI Reflector information, send a message with
* 'info scsi' (no quotes) in the message body to majordomo at symbios.com