I read some information about Rapid Dual Homing from JetNet 5020G,the figure below is the introduction of Rapid Dual Homing.
Honestly,i don't understand why can the rapid dual homing have multiple redundancies from its introduction,after i study it, i have some thinking and some questions
A is other vendors ethernet switch,and B is the MSR ethernet switch,and both of them comprise a ring,so the main function of rapid dual homing is that let two different vendors switches be connected and work functionally without any problems.
Q1: If my thinking is right,why can the connection of two rings ,which are combined with different vendors switches,have multiple redundancies?
Q2:The introduction says " uplink can be auto-detected,and gathered into groups,each group path is sorted into primary,secondary and standby ",what does it have some relation with its figure?because i cannot understand this introduction from its figure.
Can anyone explain the introduction of Rapid Dual Homing to me ?thanks a lot