Cisco ONS 15454 DWDM Manual page 14

1.2.3 Create a Facility Loopback on an Intermediate-Node MXP or TXP Port
Figure 1-5 Facility Loopback on an Intermediate-Node MXP or TXP Port
Test Set
Source
ONS Node
TXP TXP
Performing a loopback on an in-service circuit is service-affecting.
Caution
Facility loopbacks require on-site personnel.
Note
Complete the
page
Create a Facility Loopback on an Intermediate-Node MXP or TXP 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.)
In node view (single-shelf mode) or shelf view (multishelf mode), double-click the intermediate-node card
Step 3
that requires the loopback.
Step 4 Click the Maintenance > Loopback tabs.
Step 5 Select OOS,MT (or locked,maintenance) from the Admin State column. If this is a multiport card,
select the row appropriate for the desired port.
Step 6 Select Facility (Line) from the Loopback Type column. If this is a multiport card, select the row
appropriate for the desired port.
Click Apply.
Step 7
Step 8 Click Yes in the confirmation dialog box.
Cisco ONS 15454 DWDM Troubleshooting Guide, R7.0.1
1-14
Trunk port
Intermediate
ONS Node
TXP
Regenerate
"Create a Facility Loopback on an Intermediate-Node MXP or TXP Port" procedure on
1-14.
For specific procedures to connect, set up, and use the test set equipment, consult the
manufacturer.
If you just completed the "1.2.2 Perform a Terminal Loopback on a Source-Node MXP or TXP
Port" procedure on page 1-10, leave the optical test set hooked up to the source-node port.
If you are starting the current procedure without the optical test set hooked up to the source port
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.
TXP TXP
Chapter 1 General Troubleshooting
Destination
ONS Node
TXP
78-17742-02