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Conference 7.286::fddi

Title:	FDDI - The Next Generation

Moderator:	NETCAD::STEFANI

Created:	Thu Apr 27 1989
Last Modified:	Thu Jun 05 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	2259
Total number of notes:	8590

2097.0. "NOIOCHAN from FXDRIVER, max users?" by CSC32::J_SOBECKI (John Sobecki, DTN 592-4101, CXO3-2/D2) Tue Jul 30 1996 14:31

    Hello,
    
    I recently ran into a customer who was getting a NOIOCHAN error
    starting an 802 protocol on a DEMFA controller.  I reviewed
    FXDRIVER.LIS and it looks like only 29 users can start up:
    
    VMS62RESD:[PHV_LAN.LIS]FXDRIVER.LIS:
    

365 ; Maximum number of users
366         $EQU    MFA$C_MAX_USERS         32      ; Maximum number of users
367
368 ; On the DEMFA, the following user indexes are reserved:
369 ;       29 - Unknown User
370 ;       30 - SMT User
371 ;       31 - Adapter manager
372 ; Decreasing the number of user indexes available for generl consumption
373 ; by uniquely defined UCBs to 29 (indexes 0-28 are usable as unique)
374 ; Maximum number of real unique users

    I assume this is for 802 users only?  Ethernet type II users and 802E users
    can startup up more ports?  Correct or incorrect?  Is this a 802
    restriction, or a driver implmentation restriction?
    
    Thanks,
    John Sobecki
    CSC/Colorado

T.R Title User Personal
Name Date Lines

2097.1 19584::STOCKDALE Wed Jul 31 1996 17:02 13

T.R	Title	User	Personal Name	Date	Lines
2097.1		19584::STOCKDALE		`Wed Jul 31 1996 17:02`	13
	>> I assume this is for 802 users only? Ethernet type II users and 802E users >> can startup up more ports? Correct or incorrect? Is this a 802 >> restriction, or a driver implmentation restriction? Its what happens when driver development stops. The VAX driver does't use the unknown user so the limit is 29 users total, doesn't matter what type they are. And 0 is reserved for the loopback user so it would be 28 if there wasn't a loopback user started. The Alpha drivers don't have any restrictions for any devices, at least within reason. - Dick

>>    I assume this is for 802 users only?  Ethernet type II users and 802E users
>>    can startup up more ports?  Correct or incorrect?  Is this a 802
>>    restriction, or a driver implmentation restriction?

Its what happens when driver development stops.  The VAX driver does't use the
unknown user so the limit is 29 users total, doesn't matter what type they
are.  And 0 is reserved for the loopback user so it would be 28 if there wasn't
a loopback user started.

The Alpha drivers don't have any restrictions for any devices, at least within
reason.  

- Dick