Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module FTOS Command Line Referen - Page 284

www.dell.com | support.dell.com Time Domain Reflectometer (TDR) Time domain reflectormeter (TDR) is useful for troubleshooting an interface that is not establishing a link; either it is flapping or not coming up at all. TDR detects open or short conditions of copper cables on 100/1000 Base-T modules. • tdr-cable-test • show tdr Important Points to Remember • The interface and port must be enabled (configured-see the interface command) before running TDR. An error message is generated if you have not enabled the interface. • The interface on the far-end device must be shut down before running TDR. • Because TDR is an intrusive test on an interface that is not establishing a link, do not run TDR on an interface that is passing traffic. • When testing between two devices, do not run the test on both ends of the cable. tdr-cable-test Test the condition of copper cables on 100/1000 Base-T modules. Syntax tdr-cable-test interface Parameters interface Enter the keyword TenGigabitEthernet followed by the slot/port information for the 100/1000 Ethernet interface. Defaults none Command Modes EXEC Command History Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module Usage Information The interface must be enabled to run the test or an error message is generated: FTOS#tdr-cable-test tengigabitethernet 5/2 %Error: Interface is disabled TenGIG 5/2 Related Commands show tdr Displays the results of the TDR test. show tdr Display the TDR test results. Syntax show tdr interface 284 | Interfaces