Cisco Catalyst 3650 Series

show udld
To display UniDirectional Link Detection (UDLD) administrative and operational status for all ports or the
specified port, use the show udld command in user EXEC mode.
show udld [Auto-Template | Capwap | GigabitEthernet | GroupVI | InternalInterface | Loopback | Null
| Port-channel | TenGigabitEthernet | Tunnel | Vlan] interface_number
show udld neighbors
Syntax Description
(Optional) Displays UDLD operational status of the
auto-template interface. The range is from 1 to 999.
Auto-Template
(Optional) Displays UDLD operational status of the CAPWAP
interface. The range is from 0 to 2147483647.
Capwap
(Optional) Displays UDLD operational status of the
GigabitEthernet interface. The range is from 0 to 9.
GigabitEthernet
(Optional) Displays UDLD operational status of the group virtual
interface. The range is from 1 to 255.
GroupVI
(Optional) Displays UDLD operational status of the internal
interface. The range is from 0 to 9.
InternalInterface
(Optional) Displays UDLD operational status of the loopback
interface. The range is from 0 to 2147483647.
Loopback
(Optional) Displays UDLD operational status of the null
interface.
Null
(Optional) Displays UDLD operational status of the Ethernet
channel interfaces. The range is from 1 to 128.
Port-channel
(Optional) Displays UDLD operational status of the Ten Gigabit
Ethernet interface. The range is from 0 to 9.
TenGigabitEthernet
(Optional) Displays UDLD operational status of the tunnel
interface. The range is from 0 to 2147483647.
Tunnel
(Optional) Displays UDLD operational status of the VLAN
interface. The range is from 1 to 4095.
Vlan
(Optional) ID of the interface and port number. Valid interfaces
include physical ports, VLANs, and port channels.
interface-id
(Optional) Displays neighbor information only.neighbors
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
351
show udld