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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

1862.0. "DECbridge 900EF and Redundancy" by HITIT::KAYI () Tue Jan 10 1995 09:26

We need to achieve full redundancy for the FDDI dual-ring attachment of 6
Ethernet segments inside a DEChub900. Can two DECbridge900 EF's located in 
the hub as described below provide transparent failover if one bridge
goes down:

Dual ring FDDI backbone comes into the hub from port 1 of first bridge and 
leaves from port 6 of 2nd.  All 6 ports of each bridge are assigned to the
same 6 backplane ethernet segments.  I am hoping that only the Ethernet ports 
(and not the FDDI) of one bridge will go into standby mode.  In case this
bridge has a fault in Ethernet circuitry, the second will take over.  If the
bridge completely goes down the dual-ring will wrap at that point but the 
second bridge's FDDI connection will keep my Ethernets still connected to the 
FDDI ring.

Will this work nicely and transparently?

Thanks,

Fusun

T.R	Title	User	Personal Name	Date	Lines
1862.1	Why not?	CGOS01::DMARLOWE	Have you been HUBbed lately?	`Tue Jan 10 1995 22:06`	3
	Should be just fine. dave