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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

1388.0. "DEMFA FAILS SELFTEST ON POWERDOWN/UP" by TOPTEN::AVERBACH () Wed Jun 29 1994 15:22

    	I have several 7000--6xx systems all with Demfa's installed.
    Everything seems to be fine until you power down the system. The yellow
    status led comes on but the green status led never starts blinking. The
    console printout shows that the demfa failed self test. It seems that
    the only way to clear this is to leave the system powered down for a
    while and it does not always seem to work on the first try. 
    	This seems to be an intermittent problem and I have seen it with
    both 2.0 and 2.2 ucode. Any comments or thoughts on this would be
    appreciated.
    
    						Joe

T.R	Title	User	Personal Name	Date	Lines
1388.1		DANGER::JEAN		`Fri Jul 01 1994 13:43`	6
	Are these adapters connected to a concentrator, point to point or do they have loopbacks installed? Maureen
1388.2	Dec concentrator 500	TOPTEN::AVERBACH		`Tue Jul 05 1994 16:01`	3
	They are connected to a dec concentrator 500. Joe
1388.3	Errors during power up	SLUGER::BURCHAM		`Thu Aug 11 1994 13:30`	4
	We have the same problems on 7000 machines, did you fix your problem?? Ray,
1388.4	DEFMA failed Initialized Test	49393::BACHMANN	Ronni Bachmann - CS Basel Switzerland	`Mon Aug 28 1995 08:56`	16
	HALLO ALL, If seen this Problem also , we have VAX 10620 with 2 xmi bus and each has a T2027 DEFMA inst. One is connected to a Gigaswtich M Port and one has a Loopback connector . Sometime it happens when you reboot the system it cant Initialize the DEFMA get a - . Most time we have to Power down the VAX and then works fine . The Vax has COnsole V4.0 and the DEFMA uCode 2.0 . Is there a already a fix or a explanation about this behavior. Regards ROnny
1388.5	T2027 LEDs - status blinking	HAMER::KENEFICK		`Fri Sep 15 1995 13:40`	14
	Hi All, I install 2 demfa's in a 6620, one in slot 4 and the other in slot 11. there is know fiber connection at this time. I have the FDDI loopback connectors plugged into the H3063's. After powering the system up the indication of the LED's are - Selftest LED on steady, Status LED blinking, operating system not booted. Is this a problem or is it because there is no fiber connected? If it is a problem what might it be. According to the install guide it says it needs a host driver installed and enabled. Is this the cause of the blinking status LED? Thanks for the help. Mark Kenefick
1388.6	Your're right...	54690::RIETKERK	Bart Rietkerk-Hoogeveen-Holland	`Mon Sep 18 1995 08:23`	11
	Hi Mark, You are right! As soon as the operation system loads the (FX?) driver your blinking port led will go steady-on. This is expected behaviour. If you have VMS, it will go steady-on after SYSGEN> Autoconfigure All I've seen this personally on VAX9000's and VAX7000's. Cheers, Bart.
1388.7	Thank You	HAMER::KENEFICK		`Mon Sep 18 1995 11:41`	1

1388.8	T2027 fails selftest after reboot	49393::HENGARTNER		`Sun Apr 14 1996 13:04`	9
	Hallo All In the last 6 months I had the same problem on 4 different CPU's (8400,6620,7610,6310). The customer makes a reboot and selftest led didn't come on anymore - even after powerfail and reseating the module. These modules seems to be really bad. That looks strange to me as the modules worked fine until the customer has made a reboot and selftest never past again after this. Do you have any similar experience? Thank you Bruno Hengartner