Test And Clear The Terminal (Inward) Loopback Circuit On The Source Ds-N Port - Cisco ONS 15454 Troubleshooting Manual

1.3.8 Perform a Terminal (Inward) Loopback on a Source DS-N Port (East to West)
e.
f.
g.
Complete the
Step 14
procedure on page

Test and Clear the Terminal (Inward) Loopback Circuit on the Source DS-N Port

Step 1 If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 2 Examine the test traffic being received by the test set. Look for errors or any other signal information
that the test set is capable of indicating.
Step 3 If the test set indicates a good circuit, no further testing is necessary on the loopback circuit.
Double-click the DS-N card in the destination node with the terminal loopback.
Step 4 Depending upon the card type, click the Maintenance > Loopback tabs, Maintenance > DS1 tabs, or
Maintenance > DS3 tabs.
Step 5 Select None from the Loopback Type column for the port being tested.
Step 6 Select the appropriate state (IS, OOS, OOS_AINS) in the State column for the port being tested.
Step 7 Click Apply.
Step 8 Click Yes in the confirmation dialog box.
Step 9 Clear the terminal loopback:
a.
b.
c.
d.
Complete the
Step 10
page
Complete the
Step 11
Test the Destination DS-N Card
Step 1 Complete the
replace it with a known-good one.
Step 2 Resend test traffic on the loopback circuit with a known-good card.
Step 3 If the test set indicates a good circuit, the problem was probably the defective card. Return the defective
card to Cisco through the RMA process. Contact Cisco TAC (1 800 553-2447).
Step 4 Complete the
Cisco ONS 15454 Troubleshooting Guide, R4.6
1-34
Select Terminal (Inward) from the Loopback Type column. If this is a multiport card, select the
row appropriate for the desired port.
Click Apply.
Click Yes in the confirmation dialog box.
"Test and Clear the Terminal (Inward) Loopback Circuit on the Destination DS-N Port"
1-20.
Click the Circuits tab.
Choose the loopback circuit being tested.
Click Delete.
Click Yes in the Delete Circuits dialog box.
"Perform a Hairpin Test on a Destination Node Port (East to West)" procedure on
1-25. If the test set indicates a faulty circuit, the problem might be a faulty card.
"Test the Destination DS-N Card" procedure on page
"Physically Replace a Card" procedure on page 2-219
"Physically Replace a Card" procedure on page 2-219
Chapter 1 General Troubleshooting
1-21.
for the suspected bad card and
for the defective DS-N card.
November 2004