Hi All,Due to redundancy I have 4 switches SG550XG/X in hybrid stacking mode. Ring topology:Unit 1(Master): SG550X-24Unit 2(Backup): SG550X-24Unit 3(Slave): SG550XG-8F8TUnit 4(Slave): SG550XG-8F8T What exactly happens:1) Unit 2 loses connection and ...