[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

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

2127.0. "aui ports to dechub90 backplane?" by KERNEL::SMITHP () Tue Mar 21 1995 12:25

    The Dechub90 Ethernet Backplane Owners manual gives two reasons why
    two decbridge90 devices cannot be connected to the same backplane.
    One of which is:-
    
    "The Dechub 90 backplane +12v power supply can only support one Ethernet
     backbone transceiver circuit"
                                        (2-16 FIGURE 2-10)
    
    I understand that 2 bridges on the same backplane is an illegal config
    but I have tested a config with a decbridge90 in slot 8 and a
    decrepeater90FA in slot 7 and used the AUI port simultaneously on both
    devices. Am I really risking the power supply or is this a mis-print?
    
    Paul.
T.RTitleUserPersonal
Name		DateLines
2127.1Will be fine.CGOS01::DMARLOWEWow! Reality, what a concept!Wed Mar 22 1995 16:3713
    
>    I understand that 2 bridges on the same backplane is an illegal config
>    but I have tested a config with a decbridge90 in slot 8 and a
    
    It is not recommended due to the fact the bridges have a very limited
    200 station address table.
    
>    Am I really risking the power supply or is this a mis-print?
    
    The power supply can handle both a DB90 and another AUI device
    simultanously.
    
    dave