14.2.3 State transition by command
You can use the set gsrp master command to change a switch in the backup (neighbor unknown) state to the master state.
This command is effective only for backup (neighbor unknown) status. Execute this command after making sure the applicable VLAN group of the partner switch is in backup status.
> set gsrp master 1 vlan-group 1 Transit to Master. Are you sure? (y/n):y > |