Cisco ONS 15454 SDH - Perform a Facility (Line) Loopback on a Destination-Node Ethernet Port

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Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
July 2005
Chapter 1 General Troubleshooting
1.4.5 Perform a Facility (Line) Loopback on a Destination-Node Ethernet Port
e. Click Apply.
f. Click Yes in the confirmation dialog box.
Step 6 Clear the terminal loopback circuit:
a. Click the Circuits tab.
b. Choose the loopback circuit being tested.
c. Click Delete.
d. Click Yes in the Delete Circuits dialog box. Do not check any check boxes.
Step 7 Complete the “1.4.5 Perform a Facility (Line) Loopback on a Destination-Node Ethernet Port”
procedure on page 1-74.
1.4.5 Perform a Facility (Line) Loopback on a Destination-Node Ethernet Port
You perform a facility (line) loopback test at the destination port to determine whether this local port is
the source of circuit trouble. The example in Figure 1-32 shows a facility loopback being performed on
an Ethernet port.
Figure 1-32 Facility (Line) Loopback on a Destination-Node Ethernet Port
Caution Performing a loopback on an in-service circuit is service-affecting.
Complete the “Create the Facility (Line) Loopback on a Destination-Node Ethernet Port” procedure on
page 1-74.
Create the Facility (Line) Loopback on a Destination-Node Ethernet Port
Step 1 Connect an optical test set to the port you are testing:
Note Refer to the manufacturer’s instructions for detailed information about connection and setup of
the optical test set.
a. If you just completed the “1.4.4 Perform a Terminal (Inward) Loopback on an Intermediate-Node
Ethernet Port” procedure on page 1-71, leave the optical test set hooked up to the source-node port.
Destination
ONS Node
Ethernet Ethernet
XC
Source
ONS Node
Intermediate
ONS Node
Test Set
Ethenet
XC
Ethernet Ethernet
XC
Ethernet
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