Cisco ONS 15454 SDH Manual page 74

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