Brocade Communications Systems Switch 53-1001762-01 Manual de usuario descargar pdf (Pagina 172)

154 Converged Enhanced Ethernet Command Reference

53-1001762-01

spanning-tree guard root

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spanning-tree guard root

Enables the guard root to restrict which interface is allowed to be the spanning-tree root port or the

path-to-the root for the switch.

Synopsis spanning-tree guard root

no spanning-tree guard root

Operands none

Defaults Guard root is disabled.

Command

Modes

Interface configuration mode

Description Use this command to enable the guard root on the interface. Use the no spanning-tree guard root

command to disable guard root on the selected interface.

Usage

Guidelines

The root port provides the best path from the switch to the root switch.

Note Guard root protects the root bridge from malicious attacks and unintentional misconfigurations

where a bridge device that is not intended to be the root bridge becomes the root bridge. This

causes severe bottlenecks in the datapath. Guard root ensures that the port on which it is enabled

is a designated port. If the guard root enabled port receives a superior Bridge Protocol Data Unit

(BPDU), it goes to a discarding state.

Examples To enable guard root:

switch(conf-if-te-0/1)#spanning-tree guard root

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Brocade Communications Systems Switch 53-1001762-01 Manual de usuario Pagina 172