Reference Guide

Status Definition
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
Dell#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 — runs the TDR test.
UDP Broadcast
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 S4820T platform.
• 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.
S4820T
Syntax
debug ip udp-helper
To disable debug information, use the no debug ip udp-helper command.
Defaults Debug disabled.
818
Interfaces