At approximately 3:41 PM 9/7/2011, one of our Colocation Arista switches experienced a hardware reset. The heartbeat from the FocalPoint chip reset, causing the process manager on both peer switches to restart the process and terminate all MLAG connections. This self-healing feature reset the interfaces and the primary switch election took place, returning the mastership to the preferred switch, at which time the network returned to normal service. This process took approximately 7 minutes, slightly longer than expected. We have opened a case with Arista and are working with them to resolve this issue.