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Cisco ONS 15454 SDH Procedure Guide, R7.0
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Chapter 6 Create Circuits and Low-Order Tunnels
NTP- D135 Test Low-Order Circuits
Step 6
Attach loopback cables to the circuit source node.
a.
Verify the integrity of loopback cable by looping the test set Tx connector to the test set Rx
connector. If the test set does not run error-free, check the cable for damage and check the test set
to make sure it is set up correctly before going to Step
b.
Attach the loopback cable to the port you are testing. Connect the test set to the circuit source port.
Connect the Tx port of the test set to the circuit Rx port and the test set Rx port to the circuit Tx port.
Step 7
Configure the test set for the ONS 15454 SDH card that is the source of the circuit you are testing:
•
VC4 or VC4-nc—If you are testing a VC4 circuit or a VC4-nc circuit on an STM-N card, you must
have a direct optical interface into the ONS 15454 SDH. Set the test set for STM-N. For information
about configuring your test set, consult your test set user guide.
•
VC3—If you are testing a clear channel E3/DS3i-N-12, you must have a patch panel or a direct
E3/DS3i-N-12 interface into the ONS 15454 SDH. Set the test set for clear channel E3/DS3i-N-12.
For information about configuring your test set, consult your test set user guide.
•
VC12—If you are testing an E1, you must have a patch panel or a direct E1 interface to the
ONS 15454 SDH. Set the test set for E1. For information about configuring your test set, consult
your test set user guide.
Step 8
Verify that the test set has a clean signal. If a clean signal is not shown, repeat Steps
through
to make
sure the test set and cabling are configured correctly.
Step 9
Inject errors from the test set. Verify that the errors appear at the source and destination nodes.
Step 10
Clear the performance monitoring (PM) counts for the ports that you tested. See the
Selected PM Counts” task on page 21-36
for instructions.
Step 11
Complete the
“DLP-D230 Change a Circuit State” task on page 19-26
and put the circuit and circuit
ports back to the state they were in at the beginning of the test.
Step 12
Perform the protection switch test appropriate to the SDH topology:
•
For SNCP rings, complete the
“DLP-D94 SNCP Protection Switching Test” task on page 17-91
•
For MS-SPRings complete the
“DLP-D91 MS-SPRing Switch Test” task on page 17-84
.
Step 13
Perform a bit error rate test (BERT) for 12 hours or follow your site requirements for length of time. For
information about configuring your test set for BERT, see your test set user guide.
Step 14
After the BERT is complete, print the results or save them to a disk for future reference. For information
about printing or saving test results, see your test set user guide.
Stop. You have completed this procedure.
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Страница 62: ...xxii Cisco ONS 15454 SDH Procedure Guide R7 0 78 17194 01 About this Guide ...
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Страница 414: ...16 4 Cisco ONS 15454 SDH Procedure Guide R7 0 78 17194 01 Chapter 16 Power Down the Node NTP D114 Power Down the Node ...
Страница 832: ...A 14 Cisco ONS 15454 SDH Procedure Guide R7 0 78 17194 01 Appendix A CTC Information and Shortcuts Equipment Inventory ...
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