Enabling Etherchannel Guard; Enabling Root Guard - Cisco 7604 Configuration Manual
Ios software configuration guide
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Enabling EtherChannel Guard
Router(config)# spanning-tree backbonefast
Router(config)# end
Router#
This example shows how to verify that BackboneFast is enabled:
Router# show spanning-tree backbonefast
BackboneFast is enabled
BackboneFast statistics
-----------------------
Number of transition via backboneFast (all VLANs) : 0
Number of inferior BPDUs received (all VLANs)
Number of RLQ request PDUs received (all VLANs)
Number of RLQ response PDUs received (all VLANs)
Number of RLQ request PDUs sent (all VLANs)
Number of RLQ response PDUs sent (all VLANs)
Router#
Enabling EtherChannel Guard
To enable EtherChannel guard, perform this task:
Command
Step 1
Router(config)# spanning-tree etherchannel guard
misconfig
Router(config)# no spanning-tree etherchannel
guard misconfig
Step 2
Router(config)# end
Step 3
Router# show spanning-tree summary | include
EtherChannel
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
To display the interfaces that are in the errdisable state, enter the show interface status err-disable
command.
After the misconfiguration has been cleared, interfaces in the errdisable state might automatically
recover. To manually return a port to service, enter a shutdown and then a no shutdown command for
the interface.
Enabling Root Guard
To enable root guard, perform this task:
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
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Chapter 21
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Purpose
Enables EtherChannel guard.
Disables EtherChannel guard.
Exits configuration mode.
Verifies that EtherChannel guard is enabled.
Configuring Optional STP Features
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