07-20-2009 05:48 AM
We recently had an error on one of our QPM cards. This card had 2 out of the 8 ISLs from the m6140 switch and the DCX backbone. After the two ISL ports were blocked the fabric did a rebuild, causing some of the hosts on the 6140 to lose access to that disk path. Are there any procedures that could be done to avoid a fabric rebuild in this scenario? I would have thought since 6 of the ISLs remained up between the two switches that there would have been no such issue. I believe that open trunking is enabled on the 6140. Could that have been the cause of the rebuild? Could a loss of one or two components of the trunk bring down the entire link resulting in a rebuild?