Cisco ONS 15454 Troubleshooting Manual page 142

1.6.2 Perform a Terminal Loopback on a Source-Node FC_MR Port
Test and Clear the FC_MR Port Terminal Loopback Circuit
If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 1
Examine the test traffic being received by the test set. Look for errors or any other signal information
Step 2
that the test set is capable of indicating.
If the test set indicates a good circuit, no further testing is necessary on the loopback circuit. Clear the
Step 3
terminal loopback state on the port:
a.
b.
c.
d.
e.
f.
Complete the
Step 4
Test the FC_MR Card
Complete the
Step 1
and replace it with a known-good one.
Step 2 Resend test traffic on the loopback circuit with a known-good card.
If the test set indicates a good circuit, the problem was probably the defective card. Return the defective
Step 3
card to Cisco through the RMA process. Contact Cisco Technical Support at 1 800 553-2447.
Step 4 Complete the
Step 5 Clear the terminal loopback on the port before testing the next segment of the network circuit path:
a.
b.
c.
d.
e.
f.
Complete the
Step 6
page
Cisco ONS 15454 Troubleshooting Guide, R8.5
1-98
Double-click the card in the source node with the terminal loopback.
Click the Maintenance > Loopback tabs.
Select None from the Loopback Type column for the port being tested.
Select the appropriate state (IS; OOS,DSBLD; OOS,MT; IS,AINS) in the Admin State column for
the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
"Test the FC_MR Card" procedure on page
"Physically Replace a Traffic Card" procedure on page 2-273
"Physically Replace a Traffic Card" procedure on page 2-273
Double-click the card in the source node with the terminal loopback.
Click the Maintenance > Loopback tabs.
Select None from the Loopback Type column for the port being tested.
Select the appropriate state (IS; OOS,DSBLD; OOS,MT; IS,AINS) in the Admin State column for
the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
"1.6.3 Create a Facility Loopback on an Intermediate-Node FC_MR Port" procedure on
1-99.
Chapter 1 General Troubleshooting
1-98.
for the suspected bad card
for the defective card.
November 2009