Diagnostic Ldm Show Command - ZyXEL Communications MSC1024G Series User Manual

Specify the MD name, MA name, MEP ID, destination (MEP ID or MAC address) to perform
a link trace test.
Syntax:
diagnostic cfm linktrace set <md-name> <ma-name> <ep-id> <remote-ep-id>|<mac>
<ttl>
where
md-name
ma-name
ep-id
remote-
ep-id
mac
ttl

26.4.4 diagnostic ldm show Command

Syntax:
diagnostic ldm show <slot-port> result|hlin|hlog|qln|snr
where
result
hlin
hlog
qln
snr
Use this command to display the most recent loop diagnostic mode test results for an ADSL or
VDSL port. Use the loop diagnostics results to analyze problems with the physical ADSL or
VDSL line.
Wait at least one minute after using the
using the
diagnostic ldm show
MSC1000G/1024G/1224G Series User's Guide
The maintenance domain name (length<32).
=
= The maintenance association name (length<16)
= The endpoint identifier (1~8191).
The remote endpoint identifier used to resolve the remote MAC address in the
=
CCM database.
= An arbitrary unicast MAC address.
= This is Time-To-Live value (1~63 seconds). Sets this to stop a test once it
exceeds the time duration without receiving any response.
Displays the basic loop diagnostic mode test results.
=
= Displays the channel characteristics function represented in linear format by a
scale factor and a complex number. These are the maximum upstream and
downstream scale factors used in producing the channel characteristics function.
Displays channel characteristics. The format provides magnitude values in a
=
logarithmic scale. This can be used in analyzing the physical condition of the
ADSL or VDSL line.
= Displays the Quiet Line Noise for a DMT tone is the rms (root mean square) level
of the noise present on the line, when no ADSL or VDSL signals are present. It is
measured in dBm/Hz. The QLN can be used in analyzing crosstalk.
Displays the upstream and downstream Signal to Noise Ratio (in dB). A DMT
=
tone's SNR is the ratio between the received signal power and the received noise
power. The SNR can be used in analyzing time dependent changes in crosstalk
levels and line attenuation (such as those caused by temperature variations and
moisture).
command.
Chapter 26 diagnostic Commands
diagnostic ldm test
command before
637