On a managed switch, which port status value indicates that the switch has automatically disabled the port because it detected an error or policy violation (for example, a BPDU guard violation), so the interface cannot send or receive traffic until it is manually or automatically recovered?
When a switch port goes into the "Error disabled" state, the IOS software shuts down the interface after detecting a fault such as a BPDU guard, port-security, or link-flap violation. In this condition the port is administratively up in the configuration but operationally down, and it forwards no traffic until an administrator repairs the cause and re-enables the port or until an errdisable recovery timer brings it back online. Other status values such as "Administratively down" (disabled by configuration), "Suspended" (for example, in an EtherChannel mismatch), or "Connected" (normal forwarding) do not match this behavior.
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