Bpdu Attack Protection Settings - D-Link xStack DGS-3400 Series Reference Manual
Web ui reference guide for layer 2+ managed gigabit ethernet switch
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DGS-3400 Series Layer 2 Gigabit Ethernet M anaged Sw itch
BPDU Attack Protection Settings
This window is used to configure the BPDU protection function for the ports on the Switch. In generally, there are two states in
BPDU protection function. One is the normal state, and another is the under attack state. The under attack state has three modes:
drop, block, and shutdown. A BPDU protection-enabled port will enter under attack state when it receives one STP BPDU packet.
And it will take action based on the configuration. Thus, BPDU protection can only be enabled on SPT-disabled port. BPDU
protection has high priority than FBPDU setting configured by configure STP command in determination of BPDU handling. That
is, when FBPDU is configured to forward STP BPDU but BPDU protection is enabled, then the port will not forward STP BPDU.
BPDU protection also has high priority than BPDU tunnel port setting in determination of BPDU handling. That is, when a port is
configured as BPDU tunnel port for STP, it will forward STP BPDU. But if the port is BPDU protection enabled. Then the port
will not forward STP BPDU.
To view this window, click Security > BPDU Attack Protection Settings, as shown below.
Figure 6 - 40 BPDU Attack Protection Global Settings window
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