Administrator Guide

Version Description
7.6.1.0 Introduced on the C-Series.
6.1.1.0 Introduced.
Usage
Information
If the TDR test has not been run, an error message is generated:
%Error: Please run the TDR test first
The following describes the TDR test status.
Status Definition
OK Status:
Terminated
TDR test is complete, no fault is detected on the cable, and the test is terminated.
Length: 92 (+/-
1) meters,
Status: Shorted
A short is detected on the cable. The location, in this Example is 92 meters. The
short is accurate to plus or minus one meter.
Length: 93 (+/-
1) meters,
Status: Open
An opening is detected on the cable. The location, in this Example is 93 meters. The
open is accurate to plus or minus one meter.
Status:
Impedance
Mismatch
There is an impedance mismatch in the cables.
Example
DellEMC# show tdr gigabitethernet 10/47
Time since last test: 00:00:02
Pair A, Length: OK Status: Terminated
Pair B, Length: 92 (+/- 1) meters, Status: Short
Pair C, Length: 93 (+/- 1) meters, Status: Open
Pair D, Length: 0 (+/- 1) meters, Status: Impedance Mismatch
Related
Commands
● tdr-cable-test — run the TDR test.
UDP Broadcast Commands
The user datagram protocol (UDP) broadcast feature is a software-based method to forward low throughput (not to exceed
200 pps) IP/UDP broadcast traffic arriving on a physical or VLAN interface.
Important Points to Remember
● This feature is available only on the S4810, S4820T, S3048–ON, S4048–ON, Z9000 platforms.
● Routing information protocol (RIP) is not supported with the UDP Broadcast feature.
● If you configure this feature on an interface using the ip udp-helper udp-port command, the ip directed-
broadcast command becomes ineffective on that interface.
● The existing show interface command has been modified to display the configured broadcast address.
debug ip udp-helper
Enable UDP debug and display the debug information on a console.
Syntax
debug ip udp-helper
To disable debug information, use the no debug ip udp-helper command.
Defaults Debug disabled.
696 Interfaces