1-105
Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 1 General Troubleshooting
1.6.6 Perform a Terminal Loopback on a Destination-Node FC_MR Port
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 Technical Support at 1 800 553-2447.
Step 4 Complete the “Physically Replace a Traffic Card” procedure on page 2-273 for the faulty card.
Step 5 Clear the facility loopback on the port:
a. Click the Maintenance > Loopback tabs.
b. Choose None from the Loopback Type column for the port being tested.
c. Choose the appropriate state (IS; OOS,DSBLD; OOS,MT; IS,AINS) from the Admin State column
for the port being tested.
d. Click Apply.
e. Click Yes in the confirmation dialog box.
Step 6 Complete the “1.6.6 Perform a Terminal Loopback on a Destination-Node FC_MR Port” procedure on
page 1-105.
1.6.6 Perform a Terminal Loopback on a Destination-Node FC_MR Port
The terminal loopback at the destination-node port is the final local hardware error elimination in the
circuit troubleshooting process. If this test is completed successfully, you have verified that the circuit
is good up to the destination port. The example in Figure 1-43 shows a terminal loopback on an
intermediate-node destination FC_MR port.
Figure 1-43 Terminal Loopback on a Destination-Node FC_MR Port
Caution Performing a loopback on an in-service circuit is service-affecting.
Note Terminal loopbacks require on-site personnel.
Complete the “Create the Terminal Loopback on a Destination-Node FC_MR Port” procedure on
page 1-105.
Create the Terminal Loopback on a Destination-Node FC_MR Port
Step 1 Connect an optical test set to the port you are testing:
Destination
ONS Node
TXP
Source
ONS Node
Intermediate
ONS Node
Test Set
MXP TXP MXP TXP MXP
116000
To Next Page
Loading...
