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Chapter 1
General Troubleshooting
Click the Maintenance > Loopback tab.
Step 4
Select Locked,maintenance from the Admin State column. If this is a multiport card, select the row
Step 5
appropriate for the desired port.
Select Terminal (Inward) from the Loopback Type column. If this is a multiport card, select the row
Step 6
appropriate for the desired port.
Step 7
Click Apply.
Step 8
Click Yes in the confirmation dialog box.
Complete the
Step 9
page
Test and Clear the MXP/TXP/FC_MR Port Terminal Loopback Circuit
If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 1
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.
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.
Step 4
Complete the
Test the MXP/TXP/FC_MR Card
Complete the
Step 1
and replace it with a known-good one.
Removing a card that currently carries traffic on one or more ports can cause a traffic hit. To avoid this,
Caution
perform an external switch if a switch has not already occurred. See the
Lock Initiation, and Clearing" section on page 2-260
refer to the Cisco ONS 15454 SDH Procedure Guide Chapter 15, "Maintain the Node."
Resend test traffic on the loopback circuit with a known-good card.
Step 2
July 2005
"Test and Clear the MXP/TXP/FC_MR Port Terminal Loopback Circuit" procedure on
1-85.
Double-click the card in the source node with the terminal loopback.
Click the Maintenance > Loopback tab.
Select None from the Loopback Type column for the port being tested.
Select the appropriate state (Unlocked; Locked,disabled; Unlocked,automaticInService) in the
Admin State column for the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
"Test the MXP/TXP/FC_MR Card" procedure on page
"Physically Replace a Traffic Card" procedure on page 2-271
1.5.2 Perform a Terminal (Inward) Loopback on a Source-Node MXP/TXP/FC_MR Port
for basic instructions. For detailed information,
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
1-85.
for the suspected bad card
"2.10.2 Protection Switching,
1-85
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