R0106-HP MSR Router Series Interface Configuration Guide(V7)

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Step Command Remarks
15. Restore the default settings for
the CT1/PRI interface.
default N/A
16. (Optional.) Bring up the
CT1/PRI interface.
undo shutdown
By default, a CT1/PRI interface is
up.
17. Enter the view of the
synchronous serial interface
created on the CT1/PRI
interface.
interface serial
interface-number:set-number
or
interface serial
interface-number:23
N/A
18. Set the CRC mode.
crc { 16 | 32 | none } By default, 16-bit CRC is adopted.
Starting a BERT test on a CT1/PRI interface
Bit error rate test (BERT) operates as follows:
1. The local end sends out a pattern, which is looped over on the line and sent back to the local end.
2. The local end checks the received pattern for the bit error rate to help determine the line condition.
You must configure loopback to allow the transmitted pattern to loop back from a specific point on the
line. For example, enable far-end loopback on the remote interface.
To start a BERT test on a CT1/PRI interface:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter CT1/PRI interface view.
controller t1 number N/A
3. Start a BERT test.
bert pattern { 2^20 | 2^15 } time
minutes [ unframed ]
By default, no BERT test is
performed.
4. (Optional.) Verify the state and
result of the BERT test.
display controller t1
[ interface-number ]
N/A
Displaying and maintaining CT1/PRI interfaces
Execute display commands in any view and reset commands in user view.
Task Command
Display information about CT1/PRI interfaces. display controller t1 [ interface-number ]
Display information about a channel set or PRI set.
display interface serial
interface-number:set-number
Clear statistics for CE1/PRI interfaces. reset counters controller t1 [ interface-number ]