Show Diagnostics Tdr - Juniper EX2200 Hardware Manual

Network Interfaces for EX4300 Switches

show diagnostics tdr

Syntax
Release Information
Description
Options
Required Privilege
Level
Related
Documentation
List of Sample Output
Output Fields
254
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, EX3200, EX3300, and EX4200 switches—RJ-45 network interfaces. The TDR
test is not supported on management interfaces and SFP interfaces.
EX6200 and EX8200 switches— RJ-45 interfaces on line cards.
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.
none —Show summarized last results for all interfaces on the switch that support the
TDR test.
—(Optional) Show detailed last results for the specified interface
interface interface-name
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,
ge-0/0/15-ge-0/0/20
view
request diagnostics tdr on page 252
Diagnosing a Faulty Twisted-Pair Cable (CLI Procedure) on page 332
show diagnostics tdr interface ge-0/0/19 (Normal Cable) on page 256
show diagnostics tdr interface ge-2/0/2 (Faulty Cable) on page 257
show diagnostics tdr (All Supported Interfaces) on page 257
Table 45 on page 255 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
command. Output
Copyright © 2015, Juniper Networks, Inc.