Cisco ONS 15454 - Create the Terminal Loopback on a Source-Node FC_MR Port

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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 1 General Troubleshooting
1.6.2 Perform a Terminal Loopback on a Source-Node FC_MR Port
Figure 1-39 Terminal Loopback on a Source-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 Source-Node FC_MR Port” procedure on page 1-97.
Create the Terminal Loopback on a Source-Node FC_MR Port
Step 1 Connect an optical test set to the port you are testing:
Note For specific procedures to connect, set up, and use the test set equipment, consult the
manufacturer.
a. If you just completed the “1.6.1 Perform a Facility Loopback on a Source-Node FC_MR Port”
procedure on page 1-94, leave the optical test set hooked up to the FC_MR port in the source node.
b. If you are starting the current procedure without the optical test set hooked up to the source port,
use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are
testing. Both Tx and Rx connect to the same port.
Step 2 Adjust the test set accordingly. (Refer to manufacturer instructions for test-set use.)
Step 3 In node view, double-click the card that requires the loopback, such as the destination OC-N card in the
source node.
Step 4 Click the Maintenance > Loopback tabs.
Step 5 Select OOS,MT from the Admin State column. If this is a multiport card, select the row appropriate for
the desired port.
Step 6 Select Terminal from the Loopback Type column. If this is a multiport card, select the row appropriate
for the desired port.
Step 7 Click Apply.
Step 8 Click Yes in the confirmation dialog box.
Step 9 Complete the “Test and Clear the FC_MR Port Terminal Loopback Circuit” procedure on page 1-98.
Destination
ONS Node
OC-N FC_MRXC
Source
ONS Node
Intermediate
ONS Node
OC-N OC-NXCOC-N
Test Set
FC_MR XC
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