As shown in the attached diagram, I have a connectivity between two data centres.
Switch A an B are in same data centre and C & D are in same data centre.
currently two data centres are connected via a L2 trunk link and I need to have a another connectivity for resiliency. The new connectivity will be between Switch A in data centre 1 and Switch D in data centre 2.
Currently Spanning Tree priority is as below for the 900 vlan.
SW B - 8192
SW A – 16384
SW C - 8192
SW D - 16384
Can you please advice on the Spanning Tree priority to be followed when we connect XR0306SW D and SW A with the new Link.