Hello all,  our setup has detected rapid failover exchange.  For sure, we can say that there was not ISPs outage on any lines.  They just rapidly did this, back and forth.  My bet here is that probably one of the SFP modules could be faulty on MX250. Log is here : The primary security appliance, "Primary FW", became backup at 11:35 PM PDT on Aug 14. The primary security appliance, "Primary FW", became master at 11:35 PM PDT on Aug 14. The primary security appliance, "Primary FW", became backup at 11:35 PM PDT on Aug 14. The primary security appliance, "Primary FW", became master at 11:35 PM PDT on Aug 14. The primary security appliance, "Primary FW", became backup at 11:35 PM PDT on Aug 14. The primary security appliance, "Primary FW", became master at 11:36 PM PDT on Aug 14. The spare security appliance, "Secondary FW", became master at 11:36 PM PDT on Aug 14. The spare security appliance, "Secondary FW", became backup at 11:36 PM PDT on Aug 14. The spare security appliance, "Secondary FW", became master at 11:36 PM PDT on Aug 14. The spare security appliance, "Secondary FW", became backup at 11:36 PM PDT on Aug 14. The spare security appliance, "Secondary FW", became master at 11:36 PM PDT on Aug 14. The spare security appliance, "Secondary FW", became backup at 11:36 PM PDT on Aug 14. Thanks for any help ! ... View more