D-Link xStack Reference Manual page 1150

xStack® DGS-3620 Series Layer 3 Managed Stackable Gigabit Switch CLI Reference Guide
DGS-3620-28SC:admin#show udp_helper udp_port
Command: show udp_helper udp_port
UDP Helper Status
Application
------------
User App1
DGS-3620-28SC:admin#
To display the current UDP Helper for System interface:
DGS-3620-28SC:admin#show udp_helper ipif System
Command: show udp_helper ipif System
UDP Helper Status
Interface
------------
System
DGS-3620-28SC:admin#
: Enabled
UDP Port
---------------
55
: Enabled
Server
---------------
20.0.0.90
1145