T2700G-28TQ
JetStream 28-Port Gigabit Stackable L2+ Managed Switch CLI Guide
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higher priority, in order to maintain the role of root bridge. To disable the Root
Protect function, please use
no spanning-tree guard root
command.
Syntax
spanning-tree guard root
no spanning-tree guard root
Command Mode
Interface Configuration Mode (interface fastEthernet / interface range
fastEthernet / interface gigabitEthernet / interface range gigabitEthernet/
interface ten-gigabitEthernet / interface range ten-gigabitEthernet)
Example
Enable the Root Protect function for Gigabit Ethernet port 1/0/2:
T2700G-28TQ(config)#interface gigabitEthernet
1/0/2
T2700G-28TQ(config-if)#spanning-tree guard root
spanning-tree guard tc
Description
The
spanning-tree guard tc
command is used to enable the TC Protect of
Spanning Tree function for a port. To disable the TC Protect of Spanning Tree
function, please use
no spanning-tree guard tc
command. A switch removes
MAC address entries upon receiving TC-BPDUs. If a malicious user
continuously sends TC-BPDUs to a switch, the switch will be busy with
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 fastEthernet / interface range
fastEthernet / interface gigabitEthernet / interface range gigabitEthernet /
interface ten-gigabitEthernet / interface range ten-gigabitEthernet)
Example
Enable the TC Protect of Spanning Tree for Gigabit Ethernet port 1/0/2: