removing MAC address entries, which may decrease the performance and 
stability of the network. With the Protect of Spanning Tree function enabled, 
you can configure the number of TC-BPDUs in a required time, so as to avoid 
the process of removing MAC addresses frequently. 
Syntax 
spanning-tree guard tc 
no spanning-tree guard tc 
Command Mode 
Interface Configuration Mode (interface gigabitEthernet / interface range 
gigabitEthernet) 
Privilege Requirement 
Only Admin, Operator and Power User level users have access to these 
commands. 
Example 
Enable the TC Protect of Spanning Tree for port 2: 
T2500G-10TS(config)# interface gigabitEthernet 1/0/2 
T2500G-10TS(config-if)# spanning-tree guard tc 
29.21  spanning-tree mcheck 
Description 
The spanning-tree mcheck command is used to enable mcheck. 
Syntax 
spanning-tree mcheck 
Command Mode 
Interface Configuration Mode (interface gigabitEthernet / interface range 
gigabitEthernet) 
Privilege Requirement 
Only Admin, Operator and Power User level users have access to these 
commands. 
Example 
Enable mcheck for port 2: 
T2500G-10TS(config)# interface gigabitEthernet 1/0/2 
T2500G-10TS(config-if)# spanning-tree mcheck 
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