HP Mellanox SX1018 Mellanox MLNX-OS Command Reference Guide for SX1018HP Ether - Page 341
spanning-tree guard, spanning-tree guard {loop | root}, Syntax Description, Default, Modes/Context
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Rev 1.6.2 spanning-tree guard spanning-tree guard {loop | root} no spanning-tree guard {loop | root} Syntax Description Default Modes/Context History Role Example Related Commands Note Configures spanning-tree guard. The no form of the command returns configuration to default. loop Enables loop-guard on the interface. If the loop-guard is enabled, upon a situation where the interface fails to receive BPDUs the switch will not egress data traffic on this interface. root Enables root-guard on the interface. If root-guard is enabled on the interface, the interface will never be selected as root port. loop-guard and loop-guard are disabled. Config interface ethernet 3.1.0000 admin switch (config) # interface ethernet 1/1 switch (config interface ethernet 1/1) # spanning-tree guard root switch (config interface ethernet 1/1) # show spanning-tree Mellanox Technologies 341