Configuring Spanning Tree Spanning Tree
Configuration Guide
207
A switch removes MAC address entries upon receiving TC-BPDUs (the packets used to
announce changes in the network topology). If a user maliciously sends a large number of
TC-BPDUs to a switch in a short period, the switch will be busy with removing MAC address
entries, which may decrease the performance and stability of the network.
With TC protect function enabled, if the number of the received TC-BPDUs exceeds the
maximum number you set in the TC threshold, the switch will not remove MAC address
entries in the TC protect cycle.
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