Show Diagnostics Tdr - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

Complete Software Guide for Junos

show diagnostics tdr

Syntax
Release Information
Description
Options
Required Privilege
Level
Related
Documentation
List of Sample Output
Output Fields
1440
®
OS for EX Series Ethernet Switches, Release 10.4
show diagnostics tdr
<interface interface-name>
Command introduced in Junos OS Release 9.0 for EX Series switches.
Display the results of a time domain reflectometry (TDR) diagnostic test run on an
interface. A TDR test characterizes and locates faults on twisted-pair Ethernet cables.
For example, it can detect a broken twisted pair and provide the approximate distance
to the break. It can also detect polarity swaps, pair swaps, and excessive skew.
The TDR test is supported on the following switches and interfaces:
EX2200 switches—RJ-45 network interfaces. The TDR test is not supported on
management interfaces and SFP interfaces.
EX3200 and EX4200 switches—RJ-45 network interfaces. The TDR test is not supported
on management interfaces and SFP interfaces.
EX8200 switches—Interfaces on the 48-port RJ-45 line card.
Use the request diagnostics tdr
Use the
show diagnostic tdr
interface or the last TDR test results for all network interfaces on the switch that support
the TDR test.
—Show summarized last results for all interfaces on the switch that support the
none
TDR test.
interface interface-name —Show detailed last results for the specified interface or a range
of interfaces. Specify a range of interfaces by entering the beginning and ending
interface in the range, separated by a dash—for example,
view
request diagnostics tdr on page 1438
Diagnosing a Faulty Twisted-Pair Cable (CLI Procedure) on page 1359
show diagnostics tdr interface ge-0/0/19 (Normal Cable) on page 1442
show diagnostics tdr interface ge-2/0/2 (Faulty Cable) on page 1443
show diagnostics tdr (All Supported Interfaces) on page 1443
Table 213 on page 1441 lists the output fields for the
fields are listed in the approximate order in which they appear.
command to request a TDR test on a specified interface.
command to display the last TDR test results for a specified
show diagnostics tdr
ge-0/0/15-ge-0/0/20
command. Output
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