TP-Link JetStream T3700G-52TQ - Spanning-Tree Guard Loop; Spanning-Tree Guard Root

T3700G-52TQ
JetStream 52-Port Gigabit Stackable L3 Managed Switch CLI Guide
30.18 spanning-tree guard loop
Description
The spanning-tree guard loop command is used to enable the Loop Protect
function for a port. Loop Protect is to prevent the loops in the network
brought by recalculating STP because of link failures and network
congestions. To disable the Loop Protect function, please use no
spanning-tree guard loop command.
Syntax
spanning-tree guard loop
no spanning-tree guard loop
Command Mode
Interface Configuration Mode (interface fastEthernet / interface range
fastEthernet / interface gigabitEthernet / interface range gigabitEthernet/
interface ten-gigabitEthernet / interface range ten-gigabitEthernet / interface
port-channel)
Example
Enable the Loop Protect function for Gigabit Ethernet port 1/0/2:
T3700G-52TQ(config)#interface gigabitEthernet 1/0/2
T3700G-52TQ(config-if)#spanning-tree guard loop
30.19 spanning-tree guard root
Description
The spanning-tree guard root command is used to enable the Root Protect
function for a port. With the Root Protect function enabled, the root bridge
will set itself automatically as ERROR-PORT when receiving BPDU packets
with 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/
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