This read-only integer reports the minimum time period, in seconds, that must elapse between transmissions of Configuration BPDUs out any given bridge port. An admin reviews this to understand the rate-limiting behavior applied to spanning tree control traffic on this bridge, which protects against BPDU flooding. For example, if bdgdeviceHoldTime shows 1 second, the admin knows this bridge will never send more than one Configuration BPDU per second out any single port, regardless of how often topology changes occur.