Cisco ONS 15454 Troubleshooting Manual page 71

Chapter 1 General Troubleshooting
Test the Destination Electrical Card
Complete the
Step 1
and replace it with a known-good one.
Resend test traffic on the loopback circuit with a known-good card.
Step 2
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.
Complete the
Step 4
card.
Clear the terminal loopback state on the port:
Step 5
a.
b.
c.
d.
e.
f.
Delete the terminal loopback circuit:
Step 6
a.
b.
c.
d.
Step 7 Complete the
procedure on page
1.2.5 Perform a Facility Loopback on a Destination-Node Electrical Port (East to
West)
The facility loopback test is performed on the destination-node electrical port in the network circuit.
Completing a successful facility loopback on this port isolates the cabling, the electrical card, and the
EIA as possible failure points.
DS-N port.
November 2009
"Physically Replace a Traffic Card" procedure on page 2-273
"Physically Replace a Traffic Card" procedure on page 2-273
Double-click the electrical card in the destination node with the terminal loopback.
Depending upon the card type, click the Maintenance > Loopback tabs, Maintenance > DS1 tabs,
or Maintenance > DS3 tabs.
The DS-3 Admin State is the basis of the DS-1 Derived State.
Note
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.
Click the Circuits tab.
Choose the loopback circuit being tested.
Click Delete.
Click Yes in the Delete Circuits dialog box. Do not check any check boxes.
"1.2.5 Perform a Facility Loopback on a Destination-Node Electrical Port (East to West)"
1-27.
1.2.5 Perform a Facility Loopback on a Destination-Node Electrical Port (East to West)
Figure 1-15 shows an example of a facility loopback on a destination
Cisco ONS 15454 Troubleshooting Guide, R8.5
for the suspected bad card
for the defective electrical
1-27