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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

1885.0. "DecAgent90 in HUB & P/Supply!!" by WARFUT::NAEEM () Fri Jan 13 1995 12:11

    
    	A DecHub90 had the following config:
    	1 DecAgent+DecBridge90FL+3DecRepeater90C+DecRepeater90FA.
    Agent in Slot 7,DB90FL in slot 8,Repeater90FA in Slot 8(AUI port 
    not being used).
    HubWatch will only display Decagent and nothing else.
    The console to Decagent will not display anything.
    The Power Supply swapped fixed the problem.
    	Can someone explain why  & how P/Supply would interfere with
    DecAgent90 or HubWatch??What mechanism Agents uses to talk to
    modules in the HUB??
    	Thanks for any information.
    				Naeem.

T.R	Title	User	Personal Name	Date	Lines
1885.1	DECagent needs +12V (among others)	ROGER::GAUDET	Because the Earth is 2/3 water	`Fri Jan 13 1995 15:02`	20
	Naeem, >> Agent in Slot 7,DB90FL in slot 8,Repeater90FA in Slot 8(AUI port >> not being used). That's a neat trick, two devices in the same slot! :-) I'll assume you mean the repeater is in a lower slot (1-6) since you're not using the AUI. Anyway, there could be any one of a hundred reasons why the power supply will cause problems in the hub, not the least of which is insufficient power to allow the serial management bus to work properly. This would certainly cause the DECagent to be unable to "see" anything in the hub. The fact that you could not get anything at the DECagent console leads me to believe that +12V was not being supplied by the power supply, as the DB25 connector on the front panel of the DECagent requires this. There are lots of notes in this conference that explain how the DECagent manages devices in the hub using the serial management bus. ...Roger...
1885.2	y	WARFUT::NAEEM		`Fri Jan 13 1995 15:31`	10
	Roger , You are right;90FA is in Slot 1. Regarding"The console to Decagent will not display anything",what I meant to say was this; I can talk to Agent using console and can configure it.And when I ask it to display community it only shows itself,nothing else.So as you explained it got to be something else than 12V. Thanks for your reply. Naeem.