Cisco Catalyst 3650 Series

If an interface does not support TDR, this message appears:
% TDR test is not supported on device 1
Related Commands
DescriptionCommand
Runs the Time Domain Reflector (TDR) feature on an interface.
test cable-diagnostics tdr
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
946
show cable-diagnostics tdr