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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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Displaying STP Guard Configuration

To display the STP guard configuration, use the following command.

The following example shows an STP network (instance 0) in which:
  • Root guard is enabled on a port that is in a root-inconsistent state.
  • Loop guard is enabled on a port that is in a listening state.
  • BPDU guard is enabled on a port that is shut down (Error Disabled state) after receiving a BPDU.
Verify the STP guard configured on port or port-channel interfaces. show spanning-tree 0 guard [interface interface]

Example of Viewing STP Guard Configuration 

Dell#show spanning-tree 0 guard
                                 Interface
                                 Name    Instance Sts          Guard type     Bpdu Filter
                                 --------- -------- --------- ----------      ----------
                                 Tengig 0/1  0        INCON(Root)  Rootguard  No
                                 Tengig 0/2  0        LIS          Loopguard  No
                                 Tengig 0/3  0        EDS (Shut)   Bpduguard  No
                                 Dell#

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