Create A Facility Loopback Or Payload Loopback On An Intermediate-Node Optical Port - Cisco ONS 15600 SDH Troubleshooting Manual

Chapter 1 General Troubleshooting
Performing a loopback on an in-service circuit is service-affecting.
Caution
Note Facility and payload loopbacks require on-site personnel.
Complete the
procedure on page

Create a Facility Loopback or Payload Loopback on an Intermediate-Node Optical Port

Connect an optical test set to the port you are testing. If you are starting the current procedure without
Step 1
the optical test set hooked up to the source port port, use appropriate cabling to attach the Tx and Rx
terminals of the optical test set to the port you are testing. Both Tx and Rx connect to the same port.
For specific procedures to use the test set equipment, consult the manufacturer.
Adjust the test set accordingly. (Refer to manufacturer instructions for test-set use.)
Step 2
Use CTC to set up the facility loopback on the test port:
Step 3
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
Confirm that the newly created circuit appears on the Circuits tab list as a two-way circuit.
Step 4
Note
Create the facility loopback on the intermediate port being tested:
Step 5
a.
July 2010
1.2.4 Perform a Facility Loopback or Payload Loopback on an Intermediate-Node Optical Port
"Create a Facility Loopback or Payload Loopback on an Intermediate-Node Optical Port"
1-17.
In node view, click the Circuits tab and click Create.
In the Circuit Creation dialog box, choose the type, such as VC_HO_PATH_CIRCUIT, and circuit
number, such as 1.
Click Next.
In the next Circuit Creation dialog box, give the circuit an easily identifiable name such as
Opt1toOpt3.
Leave the Bidirectional check box checked.
Click Next.
In the Circuit Creation source dialog box, select the same Node, card Slot, Port, and VC where the
test set is connected.
Click Next.
In the Circuit Creation destination dialog box, use the same Node, card Slot, Port, and VC used for
the source dialog box.
Click Next.
In the Circuit Creation circuit routing preferences dialog box, leave all defaults. Click Finish.
It is normal for the "LPBKFACILITY (STMN)" condition on page 2-88
loopback setup. The condition clears when you remove the loopback.
Go to the node view of the intermediate node:
Choose View > Go To Other Node from the menu bar.
•
Choose the node from the drop-down list in the Select Node dialog box and click OK.
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Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
to appear during a
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