Juniper EX3300 Hardware Guide

show diagnostics tdr
Syntax show diagnostics tdr
<interface interface-name>
Release Information Command introduced in Junos OS Release 9.0 for EX Series switches.
Description 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 command to request a TDR test on a specified interface.
Use the show diagnostic tdr command to display the last TDR test results for a specified
interface or the last TDR test results for all network interfaces on the switch that support
the TDR test.
Options none—Show summarized last results for all interfaces on the switch that support the
TDR test.
interface interface-name—(Optional) 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,
ge-0/0/15-ge-0/0/20.
Required Privilege
Level
view
Related
Documentation
request diagnostics tdr on page 252•
• Diagnosing a Faulty Twisted-Pair Cable (CLI Procedure) on page 332
List of Sample Output 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
Output Fields Table 45 on page 255 lists the output fields for the show diagnostics tdr command. Output
fields are listed in the approximate order in which they appear.
Copyright © 2015, Juniper Networks, Inc.254
Network Interfaces for EX4300 Switches

Juniper EX3300 Specifications

General

Ethernet LAN	Yes
Authentication method	RADIUS, TACACS+
Connectivity technology	Wired
Ethernet interface type	Gigabit Ethernet
Number of VLANs	4096
Networking standards	IEEE 802.1ab, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3x, IEEE 802.3z
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Copper ethernet cabling technology	1000BASE-T, 100BASE-TX, 10BASE-T
Console port	-
ExpressCard slot	No
Fiber ports quantity	4
USB 2.0 ports quantity	0
Basic switching RJ-45 Ethernet ports quantity	48
Throughput	130 Mpps
Number of queues	8
MAC address table	16000 entries
Maximum data transfer rate	176 Gbit/s
Supported data transfer rates	10, 100, 1000Mbps
Switch type	Managed
Switch layer	L2
Security algorithms	SSH-2
Power source	AC
AC input voltage	100 - 240 V
Power consumption (typical)	100 W
Form factor	1U
Product color	Black
Flash memory	1024 MB
Processor frequency	1000 MHz
Compatible operating systems	Junos
Operating altitude	0 - 3049 m
Non-operating altitude	0 - 4877 m
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 45 °C
Storage relative humidity (H-H)	0 - 95 %
Operating relative humidity (H-H)	10 - 85 %
Supported network protocols	IPv6

Weight and Dimensions

Depth	310 mm
Width	437 mm
Height	44 mm
Weight	4900 g