TP-Link T2500-28TCTL-SL5428E T2500-28TCUN V1 User Guide - Page 121
TC Protect, Port Select, Select, Loop Protect, TC Protect, BPDU Protect, BPDU Filter
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Figure 7-10 Port Protect The following entries are displayed on this screen: Port Protect Port Select: Select: Port: Loop Protect: Root Protect: TC Protect: BPDU Protect: BPDU Filter: LAG: Click the Select button to quick-select the corresponding port based on the port number you entered. Select the desired port for port protect configuration. It is multi-optional. Displays the port number of the switch. Loop Protect is to prevent the loops in the network brought by recalculating STP because of link failures and network congestions. Root Protect is to prevent wrong network topology change caused by the role change of the current legal root bridge. TC Protect is to prevent the decrease of the performance and stability of the switch brought by continuously removing MAC address entries upon receiving TC-BPDUs in the STP network. BPDU Protect is to prevent the edge port from being attacked by maliciously created BPDUs BPDU Filter is to prevent BPDUs flood in the STP network. Displays the LAG number which the port belongs to. 7.4.2 TC Protect When TC Protect is enabled for the port on Port Protect page, the TC threshold and TC protect cycle need to be configured on this page. Choose the menu Spanning Tree→STP Security→TC Protect to load the following page. 111