I often struggle with getting EX4200 to take their assigned role in a virtual cluster. This is under version 12.3 and 15.1. If the cluster is preprovisioned, i often get what should be a master booting as a line card and staying that way.
If i change a switch from preprovisioned to non-preprovisioned + mastership-priority, it still shows its old preprovisoned membership under "show virtual". I have to zeroize the switch and reconfigure from scratch to make the revised config take.
Are there command, other than "request virtual reactivate", which will force a switch to recheck and restart its virtual chassis subsystem?