Cisco ONS 15454 DWDM Manual page 21

Chapter 1 General Troubleshooting
Clear the facility loopback on the port:
Step 5
a.
b.
c.
d.
e.
Complete the
Step 6
procedure on page
1.2.6 Perform a Terminal Loopback on a Destination-Node MXP or TXP Port
The terminal loopback at the destination-node port is the final local hardware error elimination in the
circuit troubleshooting process. If this test is completed successfully, you have verified that the circuit
is good up to the destination port. The example in
destination node TXP port.
Figure 1-8 Terminal Loopback on a Destination-Node MXP or TXP Port
Test Set
Source
ONS Node
TXP TXP
Caution Performing a loopback on an in-service circuit is service-affecting.
Note Terminal loopbacks require on-site personnel.
Complete the
page
78-17742-02
Click the Maintenance > Loopback tabs.
Choose None from the Loopback Type column for the port being tested.
Choose the appropriate state to place the port in service, out of service and disabled, out of service
for maintenance, or automatically in service from the Admin State column for the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
"1.2.6 Perform a Terminal Loopback on a Destination-Node MXP or TXP Port"
1-21.
Intermediate
ONS Node
TXP
Regenerate
"Create the Terminal Loopback on a Destination-Node MXP or TXP Port" procedure on
1-22.
1.2.6 Perform a Terminal Loopback on a Destination-Node MXP or TXP Port
Figure 1-8 shows a terminal loopback on an
TXP TXP
Cisco ONS 15454 DWDM Troubleshooting Guide, R7.0.1
Destination
ONS Node
Client port
TXP
1-21