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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

3403.0. "Braindead DECconcentrator900MX:how to cure it ?" by JGODCL::CLEEUW () Tue Mar 26 1996 09:01

Currently I'm having two so called "braindead" DECconcentrator 900MX's and have 
no idea how to cure this.
This braindead phenomena shows up when executing the selftest: it does not pass 
and the poweron led  is lit - at the same time the network led gives short 
flashes of 1Hz.
The unit does not respond to anything comming from the outside world 
whateversetup I try (DEChub900 or onehub MX ,via the etherent port (?) or the 
FDDI port in front of the unit).
Upgrading the a 900MX that is OK with new FW is no problem this works fine.
I tried the use of the special manufacturing switches aswel in a reworked 
DEChub 900 and in a onehub MX to get it up and running again but no luck.
I also used the "normal" approach: put the unit in a HUB 900 and let it do a 
bootp but the unit does not send anything onto the ehternet nor the FDDI ring 
(I monitored that using the units HW address).
This unit worked OK fine until we deliberately removed the power when it was 
upgrading it's SW in order to create such a braindead unit (this worked  
great!  :*(  ).And it realy is BRAINDEAD!
Now I ran out of options to cure this problem so any suggestions would be 
welcome.
Thanks - Cees
T.RTitleUserPersonal
Name
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3403.1NETCAD::DOODYMichael DoodyTue Mar 26 1996 09:3712
    When the concentrator is in the hub, does the hub's LCD display show it
    as "program load needed" for that slot? It should.
    
    If so, you can just use hub-assisted load. Choose the "downline upgrade" 
    choice on the hub's menu, inputting the concentrator's slot and
    filename, and the address of your favorite TFTP server.
    
    The concentrators do not do BOOTP. You cannot load it in a onehub-mx.
    It must be in a hub using hub-assisted load. The 1-Hz blinking you see
    is traffic between the MAM and the concentrator.
    
    -Mike
3403.2Learned something !JGODCL::CLEEUWFri Mar 29 1996 01:466
    Mike,
    thanks for the info.
    I'm going to try this approach today.
    Yes the Hub's display shows the "program load need" line for that slot
    so that's OK.
    Regards - Cees