5000 Series Layer 2/3 Managed Data Center Switch CLI Reference Guide
573
Display Parameters
Port
The identifying port of the interface.
Admin Mode
The administrative mode of UDLD configured on this interface. The
mode is either
Enabled
or
Disabled
.
UDLD Mode
The UDLD m
ode configured on this interface. The mode is either
Normal
or
Aggressive
.
UDLD Status
The status of the link as determined by UniDirectional Link Detection
(UDLD) protocol. The options are:
•
Undetermined – mode has not collected enough information to
determine the state of the link.
•
Not applicable – mode is disabled, either globally or on the port.
•
Shutdown – mode has detected a unidirectional link and
shutdown the port. That is, the port is in an errDisabled state.
•
Bidirectional – mode has detected a bidirectional link.
•
Undetermined (Link Down) – mode shuts down a port if it can
explicitly determine that the associated link has been faulty for
an extended period of time.
Interface Error Disable and Auto Recovery
Interface error disable automatically disables an interface when an error is detected; no traffic is allowed
until the interface is either manually re-enabled or, if auto recovery is configured, the configured auto
recovery time interval has passed.
For interface error disable and auto recovery, an error condition is detected for an interface, the interface
is placed in a diagnostic disabled state by shutting down the interface. The error disabled interface does
not allow any traffic until the interface is re-enabled. The error disabled interface can be manually enabled.
Alternatively administrator can enable auto recovery feature. D-LINK OS Auto Recovery re-enables the
interface after the expiry of configured time interval.
5-590 errdisable recovery cause
Use this command to enable auto recovery for a specified cause or all causes. When auto recovery is
enabled, ports in the diag-disable state are recovered (link up) when the recovery interval expires. If the
interface continues to experience errors, the interface may be placed back in the diag-disable state and
disabled (link down). Interfaces in the diag-disable state can be manually recovered by entering the
no
shutdown
command for the interface.
Use the
no
command to disable auto recovery for a specific cause. When disabled. auto recovery will not
occur for interfaces in a diag-disable state due to that cause.
errdisable recovery cause {all | udld | storm-control | bpdu | mac-flap | link-flap}
no errdisable recovery cause {all | udld | storm-control | bpdu | mac-flap | link-flap}