Cisco ONS 15454 Troubleshooting Manual page 56

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1.2.1 Perform a Facility Loopback on a Source Electrical Port (West to East)
Step 3
In node view, double-click the card to open the card view.
For any of these cards, click the Maintenance > DS3 tabs.
Step 4
Note
For the DS3 tab, choose OOS,MT from the Admin State column for the port being tested. If this is a
Step 5
multiport card, select the appropriate row for the port being tested. For the DS1 tab, no state selection is
necessary unless the DS-1 is in service. The loopback/send code cannot be selected for a DS-1 if the
derived state is OOS,DSBLD.
Step 6
Choose Facility from the Loopback Type column for the port being tested. If this is a multiport card,
select the appropriate row for the port being tested.
Step 7
Click Apply.
Step 8
Click Yes in the confirmation dialog box.
Note
Complete the
Step 9
page
Test and Clear the DS3E or DS3XM Port Facility Loopback Circuit
If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 1
Examine the traffic received by the test set. Look for errors or any other signal information that the test
Step 2
set is capable of indicating.
If the test set indicates a good circuit, no further testing is necessary with the facility loopback.
Step 3
Double-click the card to open the card view.
Step 4
For any of these cards, click the Maintenance > DS3 tabs.
Note
Step 5
Choose None from the Loopback Type column for the port being tested.
Choose the appropriate state (IS; OOS,DSBLD; OOS,MT; IS,AINS) from the Admin State column for
Step 6
the port being tested.
Click Apply.
Step 7
Step 8
Click Yes in the confirmation dialog box.
Complete the
Step 9
Cisco ONS 15454 Troubleshooting Guide, R8.5
1-12
The DS-3 Admin State is the basis of the DS-1 Derived State.
It is normal for the
"LPBKFACILITY (DS1, DS3)" condition on page 2-169
loopback setup. The condition clears when you remove the loopback.
"Test and Clear the DS3E or DS3XM Port Facility Loopback Circuit" procedure on
1-12.
The DS-3 Admin State is the basis of the DS-1 Derived State.
"Test the Electrical Cabling" procedure on page
Chapter 1
General Troubleshooting
to appear during
1-13.
November 2009

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