Create The Facility Loopback On The Source-Node Ethernet Port; Test And Clear The Facility Loopback Circuit; Figure 1-13 Facility Loopback On A Circuit Source Ethernet Port - Cisco ONS 15600 SDH Troubleshooting Manual

1.3.1 Perform a Facility Loopback on a Source-Node Ethernet Port
Figure 1-13 Facility Loopback on a Circuit Source Ethernet Port
Source
ONS Node
Ethernet
Test Set
Performing a loopback on an in-service circuit is service-affecting.
Caution
Complete the

Create the Facility Loopback on the Source-Node Ethernet Port

Connect an optical test set to the ASAP Ethernet port you are testing.
Step 1
Note
Use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are
testing. The Tx and Rx terminals connect to the same port.
Adjust the test set accordingly. (Refer to manufacturer instructions for test-set use.)
Step 2
In CTC node view, double-click the card to display the card view.
Step 3
Click the Maintenance > Ethernet > Loopback > Port tabs.
Step 4
Choose Locked,maintenance from the Admin State column for the port being tested. If multiple ports
Step 5
are available, select the appropriate row for the desired port.
Choose Facility from the Loopback Type column for the port being tested. If multiple ports are available,
Step 6
select the appropriate row for the desired port.
Click Apply.
Step 7
Click Yes in the confirmation dialog box.
Step 8
Note
Complete the
Step 9

Test and Clear the Facility Loopback Circuit

If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 1
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
1-30
XC
Ethernet
"Create the Facility Loopback on the Source-Node Ethernet Port" procedure on page
For specific procedures to use the test set equipment, consult the manufacturer.
It is normal for the "LPBKFACILITY (GIGE)" condition on page 2-88
loopback setup. The condition clears when you remove the loopback.
"Test and Clear the Facility Loopback Circuit" procedure on page
Intermediate
ONS Node
XC
Ethernet Ethernet
Chapter 1 General Troubleshooting
Destination
ONS Node
XC
Ethernet Ethernet
to appear during
1-30.
July 2010
1-30.