HP 1920 Gigabit Ethernet Switch Series User Manual page 206

Figure 180 Configuring MSTP globally
3. Configure the global MSTP configuration as described in
Table 59 Configuration items
Item
Enable STP Globally
BPDU Guard
Description
Selects whether to enable STP globally.
Other MSTP configurations take effect only after you enable STP globally.
Selects whether to enable BPDU guard.
BPDU guard can protect the device from malicious BPDU attacks, making the
network topology stable.
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Table 59, and then click Apply.