Cisco Catalyst 3650 Series - Command Reference, Cisco IOS XE Everest 16.5.1 A (Catalyst 3650 Switches

DescriptionField
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).
CDP device name
This is an example of output from the show udld neighbors command:
Device# show udld neighbors
Port Device Name Device ID Port-ID OperState
-------- -------------------- ---------- -------- --------------
Gi2/0/1 Switch-A 1 Gi2/0/1 Bidirectional
Gi3/0/1 Switch-A 2 Gi3/0/1 Bidirectional
Related Commands
DescriptionCommand
Enables aggressive or normal mode in UDLD or sets the configurable message
timer time.
udld
Enables UDLD on an individual interface or prevents a fiber-optic interface from
being enabled by the udld global configuration command.
udld port
Resets all interfaces shut down by UDLD and permits traffic to pass through again.
udld reset
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
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show udld