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Conference netcad::hub_mgnt

Title:	DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:	Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:	NETCAD::COLELLADT

Created:	Wed Nov 13 1991
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	4455
Total number of notes:	16761

1406.0. "AUI port problem on DECrepeater 900GM" by COMBAT::JONSSON (Lars Jonsson) Mon Sep 12 1994 14:30

Hi,

A customer reported a problem with getting the AUI port operational on the
DECrepeater 900GM. The AUI power LED did not come ON, neither did the power LED
on a UTP transceiver if you connected one to the repeater AUI port. The module
was replaced by Digital service, but the new module shows the same symptoms.

According to the customer, Hubwatch V3.13 for windows shows the port OK. It's
enabled, not partitioned. The module is connected to the thinwire-channel and a
flex-channel on the backplane side.

Are there any special operations that we have to perform to get the AUI port
going ? 

Regards,
Lars

T.R	Title	User	Personal Name	Date	Lines
1406.1	behavior not observed in lab	LEVERS::RITZ	Relax, it's only ones and zeros	`Tue Sep 13 1994 19:08`	13
	>Are there any special operations that we have to perform to get the AUI port >going ? No, it should power up when you plug in the adapter (transceiver) if the port is truly switched on. Is it possible the adapter is blown? Can you verify the adapter on another AUI port somewhere? Can they diddle around with it? E.g., cycle the port on and off (from Hubwatch.) If so, does that help? Do they have a known good GM you can swap in? John
1406.2	MAM FW Rev?	NACAD2::HERTZBERG	History: Love it or Leave it!	`Tue Sep 13 1994 19:39`	5
	I believe this could also be an issue of MAM firmware not at sufficiently high revision level. Can you check out what rev they are running? Marc
1406.3	... also	NACAD2::HERTZBERG	History: Love it or Leave it!	`Wed Sep 14 1994 14:32`	3
	It is possible that a bad MAU could cause the AUI power LED to remain off. To test this, simply remove the MAU.
1406.4	Issue being raised again... mail extract	NETCAD::HERTZBERG	History: Love it or Leave it!	`Fri Feb 24 1995 12:32`	24
	>> The MAM module does not report any power supply problem or missing 12 >> volts. What firmware revision is the MAM at? How about the 900GM? How many amps of 15V power is the MAM reporting available? It's possible that the 15V supply in the hub doesn't have enough current capacity to support the AUI port on the 900GM. When the 900GM is put in the hub, it asks for permission to use an additional 1/2 amp of 15V. It doesn't turn on the power until it gets permission from the MAM. This suggests that this could also be a communications problem between the MAM and the 900GM. Is the 900GM correctly being identified in the MAM display? Or does the display say "occupied unknown" or something like that? FYI - The AUI port power on the 900GM is derrived from the hub's 15V power supply... not taken from the 12V supply available at each slot. The hub manager only knows about the 15V supply anyway. >> Shouldn't the I/O LED come on straight-away. Yes. As soon as the MAM gives permission. The module asks for permission right away.
1406.5	Check MAM to be 3.1	GIDDAY::STANISLAUS		`Sat Feb 25 1995 14:55`	5
	We had the same problem with MAM F/W 2.x. Upgrading the MAM to 3.1 fixed the problem. ALphonse