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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

1064.0. "MFA-0 counters max out at 4294967294 ???" by CSC32::D_GARZANITI (Set the WAYBACK machine to ...) Tue Aug 17 1993 13:19

Hello,

I have a customer who has indicated that he sees the counters on the MFA-0
suddenly max out at 4294967294 for no apparent reason.

Specifically he has indicated that the counters RING INITIALIZATION
INITIATED and MAXIMUM ERROR COUNT will suddenly jump to 4294967294, at the
same time that this occurs he indicates that other equipment on his ring 
perceive no problems.

The customer is running VMS v5.5-2 and the FXDRIVER X-22 with a link date
and time of 17-MAR-1993.

Has anyone else experienced this problem ?

Any hints or pointers are greatly appreciated.

Thanks in advance.

Dominick

T.R	Title	User	Personal Name	Date	Lines
1064.1	32 bit counter?	SCHOOL::WASHABAUGH	Born to be Mild	`Tue Aug 17 1993 17:51`	5
	If you convert 4294967294 to hexadecimal, you get 0xFFFFFFFE, which is about as large as a longword would hold. Therefore I would presume they implemented 32 bit counters rather than 64 bit counters. doug
1064.2		STAR::GAGNE	David Gagne - VMS/LAN Development	`Wed Aug 18 1993 11:30`	3
	Doug, we support 64 bit counters, but Phase IV will only accept 32 bit counters. So that's what we pass to DECnet-VAX. We pass 64 bit counters (as called for) to DECnet/OSI.
1064.3	Ok ... but why is this happening ?	CSC32::D_GARZANITI	Set the WAYBACK machine to ...	`Wed Aug 18 1993 12:14`	19
	Thanks Doug and Dave for the quick response. I'm sorry that I didn't make my question clear. The issue here is not at what point the counters max out but the fact that the RING INITIALIZATION INITIATED and MAXIMUM ERROR COUNT counters suddenly jump to the maximum value for no apparent reason. Once again the customer indicates that when these counters jump to the maximum value, other equipment on his ring perceive no problems. I was wondering if anyone else had experienced a problem with the counters being logged correctly. Ideas ??? Thanks again, Dominick
1064.4		STAR::GAGNE	David Gagne - VMS/LAN Development	`Wed Aug 18 1993 14:35`	3
	Those counters come from the device. The driver just passes them from the device to NCP. So the question is for the DEMFA. Maureen SASE::JEAN supports the DEMFA. I'll send the initial note to her.