Tp-Link T1600G-52TS V1 Configuration Guide онлайн [230/755] 394685

Tp-Link T1600G-52TS V1 Configuration Guide онлайн [230/755] 394685
Configuration Guide 208
Configuring Spanning Tree Spanning Tree
With BPDU protect function enabled, the edge port will be shutdown when it receives BPDUs,
and reports these cases to the administrator. Only the administrator can restore it.
» BPDU Filter
BPDU filter function is to prevent BPDU flooding in the network. It is recommended to enable this
function on edge ports.
If a switch receives malicious BPDUs, it forwards these BPDUs to the other switches in the
network, and the spanning tree will be continuously regenerated. In this case, the switch occupies
too much CPU or the protocol status of BPDUs is wrong.
With BPDU filter function enabled, the port does not receive or forward BPDUs, but it sends out
its own BPDUs, preventing the switch from being attacked by BPDUs.
» TC Protect
TC Protect function is used to prevent the switch from frequently removing MAC address entries.
It is recommended to enable this function on the ports of non-root switches.
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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