1-41
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
78-17235-01
Chapter 1 General Troubleshooting
1.6.6 Perform a Terminal Loopback on a Destination-Node Ethernet Port
Step 5
Clear the facility loopback on the port:
a.
Double-click the CE100T-8 card and click the
Maintenance > Loopback
tabs.
b.
Choose
None
from the Loopback Type column for the port being tested.
c.
Choose the appropriate state (IS; OOS,DSBLD; OOS,MT) from the Admin State column for the port
being tested.
d.
Click
Apply
.
e.
Click
Yes
in the confirmation dialog box.
Step 6
Clear the facility 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
“1.6.6 Perform a Terminal Loopback on a Destination-Node Ethernet Port” procedure on
page 1-41
.
1.6.6 Perform a Terminal Loopback on a Destination-Node Ethernet 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.
Caution
Performing a loopback on an in-service circuit is service-affecting.
Note
Terminal loopbacks require on-site personnel.
Complete the
“Create the Terminal Loopback on a Destination-Node Ethernet Port” procedure on
page 1-41
.
Create the Terminal Loopback on a Destination-Node Ethernet Port
Step 1
Connect a test set to the CE100T-8 port that you are testing:
Note
For specific procedures to connect, set up, and use the test set equipment, consult the
manufacturer.
a.
If you just completed the
“1.6.5 Perform a Facility Loopback on a Destination-Node Ethernet Port”
procedure on page 1-38
, leave the test set hooked up to the source port.
b.
If you are starting the current procedure without the test set hooked up to the source port, use
appropriate cabling to attach the Tx and Rx terminals of the test set to the port you are testing. Both
Tx and Rx connect to the same port.