@Clive_A Thank you for your reply The following attached images show my RSTP configuration when I change the CIST Priority to 4096 or 0 to make TP-Link switch the Root bridge it puts the uplink...

Good evening I have TL-SG3428MP connected to Aruba InstantOn 1930 only via one uplink whenever I have configured RSTP over both of them if let the TL-SG3428MP to be the root bridge it put the uplink...