Cisco ONS 15454 Troubleshooting Manual page 141

Chapter 1 General Troubleshooting
Figure 1-39 Terminal Loopback on a Source-Node FC_MR Port
Source
ONS Node
FC_MR
Test Set
Performing a loopback on an in-service circuit is service-affecting.
Caution
Terminal loopbacks require on-site personnel.
Note
Complete the
Create the Terminal Loopback on a Source-Node FC_MR Port
Connect an optical test set to the port you are testing:
Step 1
Note
a.
b.
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.
Click the Maintenance > Loopback tabs.
Step 4
Select OOS,MT from the Admin State column. If this is a multiport card, select the row appropriate for
Step 5
the desired port.
Select Terminal from the Loopback Type column. If this is a multiport card, select the row appropriate
Step 6
for the desired port.
Click Apply.
Step 7
Click Yes in the confirmation dialog box.
Step 8
Complete the
Step 9
November 2009
XC OC-N
"Create the Terminal Loopback on a Source-Node FC_MR Port" procedure on page
For specific procedures to connect, set up, and use the test set equipment, consult the
manufacturer.
If you just completed the
procedure on page 1-94, leave the optical test set hooked up to the FC_MR port in the source node.
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.
"Test and Clear the FC_MR Port Terminal Loopback Circuit" procedure on page
1.6.2 Perform a Terminal Loopback on a Source-Node FC_MR Port
Intermediate
ONS Node
OC-N XC OC-N
"1.6.1 Perform a Facility Loopback on a Source-Node FC_MR Port"
Cisco ONS 15454 Troubleshooting Guide, R8.5
Destination
ONS Node
OC-N XC FC_MR
1-98.
1-97
1-97.