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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

549.0. "DEMFA, no FDDI, no boot?" by AUNTB::DAVISST () Tue Apr 28 1992 21:03

    Customer is running 5.4-3, was told "problem" applies to 5.5 also.
    
    After DEMFA installed in 6000, it will not boot unless connected to
    FDDI network (concentrator in this case).
    
    1.  Is this correct?
    
    2.  Is there anyway to terminate at the 6000?
    
    Customer concern -- Concentrator go down and they have a heavy
    production cluster than cannot boot.
    
    Can system boot with DEMFA installed but not connected (ie, terminate
    at system)?
    
    This observation seems valid (risk of not being able to boot).  What is
    our response?
    
    Thanks.

T.R	Title	User	Personal Name	Date	Lines
549.1	Insert a loopback into the adapter socket	LARVAE::HARVEY	Baldly going into the unknown...	`Wed Apr 29 1992 10:28`	9
	If you insert an FDDI loopback plug into the DEMFA socket I think this should stop any problems. You may wish to check out with the MDF (FDDI Clusters) notesfile at ISEQ::MDF Rog
549.2		QUIVER::WEEKS		`Wed May 06 1992 13:08`	3
	Isn't this a bug? Phil
549.3		KONING::KONING	Paul Koning, A-13683	`Mon May 11 1992 18:10`	6
	Sure looks like a bug. Inserting a loopback connector doesn't answer the concern about being unable to boot due to concentrator being down! paul
549.4	So many bugs,.. so little time	STAR::SALKEWICZ	It missed... therefore, I am	`Tue May 12 1992 17:49`	15
	I'd say its a bug,.. but Paul,.. nobody said the loopback connector didn;t help. In fact I'd presume from lack of response to that suggestion that perhaps it did work and .0 went away semi-happy? If the loopbakc doesn't work (which was going to be my suggestion) then please let me know and I will bump the priority of this problem up a bit... If the loopback works,.. at least there is a temporary work around... /Bill
549.5		KONING::KONING	Paul Koning, A-13683	`Wed May 13 1992 13:55`	11
	Re workaround... I'm not sure, given the description. Suppose the system is running, then the concentrator dies, or is shut off, or whatever. Then for some random reason the system reboots (say, a crash). It happens to be an unattended system. Normally it would autorestart, but it sounds from the description in .0 that it will not in this case. The solution at that point is to go over to the system, install the loopback connector, and restart, but if the system is normally unattended that sounds like a fair hassle. Still better than no workaround at all, of course... paul
549.6	...	STAR::SALKEWICZ	It missed... therefore, I am	`Thu May 14 1992 13:12`	5
	temporary workaround (!) /Bill
549.7	Helps to have the DEMFA in the right XMI slots	MSBCS::KALKUNTE	Ram Kalkunte BXB1-1/D3	`Thu May 14 1992 17:58`	23
	Before this becomes another rathole topic for those DEMFA lovers :-), the following note I just received should set this straight. Ram ----------------- From: AUNTB::AUNTB::MRGATE::"A1::DAVIS.STEVE" To: MSBCS::KALKUNTE CC: Subj: RE: DEMFA, no FDDI, no boot? From: NAME: STEVE DAVIS @RTP FUNC: SOFTWARE SERVICES TEL: DTN 367-4457 <DAVIS.STEVE AT A1 at AUNTB at ALF > To: NAME: KALKUNTE <KALKUNTE@MSBCS@MRGATE@AUNTB@ALF> The Field Engineer is on vacation this week, but the customer informed me that the DEMFA worked properly when placed in the correct XMI slot. THANKS!
549.8	DEMFA and XMI slots	MSBCS::REGE		`Thu May 14 1992 18:55`	11
	Ref .7 Ram, Thank god, you caught this bug! Can you please state what slots DEMFA can go into? This may help other readers not make the same mistake. Is DEMFA documentation complete on it? /satish
549.9	cockpit error after all	STAR::SALKEWICZ	It missed... therefore, I am	`Fri May 15 1992 16:37`	6
	:-) Thank you Ram! /Bill