D-Link xStack DGS-3120 Series User Manual

xStack
®
DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch CLI Reference Guide
177
• When the link partner is powered down with errors, this command can detect whether
the error is open, short, or crosstalk. In this case this command can also detect the
distance of the error.
• When there is no link partner with no errors, this command can detect the cable length.
• When there is no link partner with errors, this command can detect whether the error is
open, short, or crosstalk. In this case this command can also detect the distance of the
error.
When the link partner is Gigabit Ethernet ports:
• Where the link partner is powered on with no errors and the link is up, this command can
detect the cable length.
• Where the link partner is powered on with errors, this command can detect whether the error
is open, short, or crosstalk. In this case this command can also detect the distance of the error.
• Where the link partner is powered down with no errors and the link is down, this command
cannot detect the cable length.
• When the link partner is powered down with errors, this command can detect whether the
error is open, short, or crosstalk. In this case this command can also detect the distance of the
error.
• When there is no link partner with no errors, this command can detect the cable length.
• When there is no link partner with errors, this command can detect whether the error is open,
short, or crosstalk. In this case this command can also detect the distance of the error.
NOTE: This test is only for copper cable. The fiber port is not tested. For the combo ports, only the
copper media will be tested.
The cable diagnosis does not support on the Pair 1 and 4 if the link partner is FE port.
If the link partner is FE port, the target port's link will be down after the test.
Format
cable_diag ports [<portlist> | all]
Parameters
<portlist> - Enter a list of ports used for the configuration here.
all – Specify that all the ports will be used for this configuration.
Restrictions
None.
Example
Test the cable on port 1, 11, and 12:

D-Link xStack DGS-3120 Series Specifications

General

MAC Address Table	16K entries
Ports	10/100/1000BASE-T ports
VLANs	4094
Jumbo Frame	Up to 9KB
Power Supply	Internal power supply (depending on model)
Power over Ethernet (PoE)	No
Layer 3 Features	RIP
Quality of Service (QoS)	8 queues per port, DiffServ
Security Features	ACLs
Management	Web-based, CLI, SNMP
Operating Temperature	0°C to 40°C
Storage Temperature	-40°C to 70°C
SFP Ports	Combo 10/100/1000BASE-T/SFP ports and/or dedicated SFP/SFP+ ports (depending on model)