12-24
Stinger®
Administration Guide
Diagnostic Testing
Internal and external diagnostic tests
admin>
read line-diag-stat {1 2 1}
LINE-DIAG-STAT/{ shelf-1 slot-2 1 } read
admin>
list
[in LINE-DIAG-STAT/{ shelf-1 slot-2 1 }]
physical-address* = { shelf-1 slot-2 1 }
bert-operation-state = stopped
idt-operation-state = stopped
bert-error-counter = 0
idt-send-count = 1000
idt-recv-count = 1000
idt-error-counter = 0
If you attempt to modify the
idt-enable
parameter while an internal diagnostic test
is active for a line, the system generates a warning message as follows:
admin>
set idt-enable = no
admin>
write
LOG warning, Shelf 1, Controller-1, Time: 20:12:30--
IDT Test for {1 3 1} is running !
LINE-DIAG/{ shelf-1 slot-3 1 } written
Running an external diagnostic test (EDT) feature
You configure a line for external diagnostic testing by putting it loopback mode. The
loop-back
parameter in the line-config subprofile for a line enables external
diagnostic testing.
[in HDSL2/{ shelf-1 slot-2 1 }:line-config]
loop-back = none
Note
External diagnostic tests in analog mode do not work for the 24-port ADSL
LIM if a CPE device is connected and trained up. External diagnostic testing does
work in either digital mode or analog mode if no CPE device is attached.
Digital loopback
When a line is enabled for digital loopback, data is looped only at the digital circuitry
of the modem. Data does not reach the analog circuitry, as shown in Figure 12-1.
Parameter
Setting
loop-back
Whether the line passes normal data or is in loopback mode. Specify
one of the following values:
none
(default)—The line is not used for loopback testing and
passes normal data.
analog
—The line is enabled for analog loopback testing. (You
might need to terminate the DSL line with a 150-ohm resistor.)
digital
—The line is enabled for digital loopback testing.
Summary of Contents for Stinger
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