tmnxSubAuthPlcyRadAuthDownTime 1.3.6.1.4.1.6527.3.1.2.33.1.1.1.30

The value of tmnxSubAuthPlcyRadAuthDownTime specifies the hold down time. If a RADIUS authentication server that was considered 'down' becomes responsive again, the system waits for this amount of time before it starts to address that server again.