Virtual Circuit Test; Table 444 Set Loop Detect Send Command; Table 445 Show Loop Detect Command - Zte ZXR10 2920 User Manual

9. To display port loop test configuration and port detection
E
ND OF STEPS
Result Single-Port loop test has been configured.

Virtual Circuit Test

VCT Function Virtual circuit test (VCT) uses time domain reflectometer (TDR)
to diagnose circuit.
status, such as Open, Short, Impedance Mismatch and Good
termination, and to obtain the distance of the error circuit with
the fitted empirical formula.
Use show vct port command on switch to query the VCT result
of the specified port.
For interface modules in extended slots,
supports VCT of gigabit electrical interface.
modules, VCT is not supported.
T 4 4 4 S L D
A B L E E T O O P
Format
set loopdetect
sendpktinterval
<5-60>
Result: This sets interval time of sending loop test packet.
Note: Loop test function send test packet in an interval time,
and judging whether there is a self-loop by judging whether
the packet is received in the interval time.
used to set the interval time, by second.
status, use command show loopdetect in global config
mode. This is shown in Table 445.
T 4 4 5 S L
A B L E H O W O O P
Format
show loopdetect
Result: This displays port loop test configuration and port
detection status.
Note: When the port cannot work normally, configure show
loopdetect to observe whether a port loop exists.
loop is detected and the spanning tree of the port is enabled,
eliminate fault according to status of spanning status.
This test enables to diagnose circuit error
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S C
E T E C T E N D O M M A N D
Mode
global config
D C
E T E C T O M M A N D
Mode
global config
Chapter 10 Maintenance
Function
This sets interval
time of sending
loop test packet
Command is
Function
This displays port
loop test
configuration and
port detection
status
If no
this switch only
For other interface
297