Cisco Systems EA6500 Manual De Usuario

To enable EtherChannel guard, perform this task: 

This example shows how to enable EtherChannel guard:

Router# configure terminal 

Router(config)# spanning-tree etherchannel guard misconfig 

Router(config)# end 

Router#

This example shows how to verify the configuration:

Router# show spanning-tree summary | include EtherChannel

EtherChannel misconfiguration guard is enabled

Enter the show interface status err-disable command to display interfaces in the errdisable state.

After the misconfiguration has been cleared, interfaces in the errdisable state might automatically 
recover. To manually return an interface to service, enter a shutdown and then a no shutdown command 
for the interface.

To enable root guard, perform this task:

Enter the show spanning-tree inconsistentports command to display ports that are in the 
root-inconsistent state.

Router(config)# spanning-tree etherchannel guard 

 

Enables EtherChannel guard. 

Router(config)# no spanning-tree etherchannel 

 

Disables EtherChannel guard. 

Router(config)# end 

Exits configuration mode.

Router# show spanning-tree summary | include 

 

Verifies that EtherChannel guard is enabled.

Router(config)# interface {type

1

 slot/port} | 

{port-channel port_channel_number} 

1.

type = ethernet, fastethernet, gigabitethernet, or tengigabitethernet 

Selects an interface to configure. 

Router(config-if)# spanning-tree guard root 

Enables root guard. 

Router(config-if)# no spanning-tree guard root 

Disables root guard.

Router(config-if)# end 

Exits configuration mode.

Router# show spanning-tree 

Router# show running interface {type

 slot/port} | 

{port-channel port_channel_number}

Verifies the configuration.