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Cisco ME 3800X Command Reference Manual page 425

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Chapter
Table 3-16
show udld Field Descriptions
Field
Interface
Port enable administrative
configuration setting
Port enable operational state
Current bidirectional state
Current operational state
Message interval
Time out interval
Entry 1
Expiration time
Device ID
Current neighbor state
Device name
Port ID
Neighbor echo 1 device
Neighbor echo 1 port
Message interval
CDP device name
Related Commands
Command
udld
udld port
udld reset
OL-28238-01
Description
The interface on the local device configured for UDLD.
How UDLD is configured on the port. If UDLD is enabled or disabled, the port
enable configuration setting is the same as the operational enable state. Otherwise,
the enable operational setting depends on the global enable setting.
Operational state that shows whether UDLD is actually running on this port.
The bidirectional state of the link. An unknown state appears if the link is down or
if it is connected to an UDLD-incapable device. A bidirectional state appears if the
link is a normal two-way connection to a UDLD-capable device. All other values
mean miswiring.
The current phase of the UDLD state machine. For a normal bidirectional link, the
state machine is most often in the Advertisement phase.
How often advertisement messages are sent from the local device. Measured in
seconds.
The time period, in seconds, that UDLD waits for echoes from a neighbor device
during the detection window.
Information from the first cache entry, which contains a copy of echo information
received from the neighbor.
The amount of time in seconds remaining before this cache entry is aged out.
The neighbor device identification.
The neighbor's current state. If both the local and neighbor devices are running
UDLD normally, the neighbor state and local state should be bidirectional. If the link
is down or the neighbor is not UDLD-capable, no cache entries appear.
The device name or the system serial number of the neighbor. The system serial
number appears if the device name is not set or is set to the default (Switch).
The neighbor port ID enabled for UDLD.
The device name of the neighbors' neighbor from which the echo originated.
The port number ID of the neighbor from which the echo originated.
The rate, in seconds, at which the neighbor is sending advertisement messages.
The CDP device name or the system serial number. The system serial number
appears if the device name is not set or is set to the default (Switch).
Description
Enables aggressive or normal mode in UDLD or sets the configurable message
timer time.
Enables UDLD on an individual interface or prevents a fiber-optic interface from
being enabled by the udld global configuration command.
Resets all interfaces shutdown by UDLD and permits traffic to begin passing
through them again.
Cisco ME 3800X and ME 3600X Switch Command Reference
show udld
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