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Chapter 1
General Troubleshooting
If you are starting the current procedure without the optical test set hooked up to the source port,
b.
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.
Adjust the test set accordingly.
Step 2
Step 3
Use CTC to set up the hairpin circuit on the test port:
a.
In node view, click the Circuits tab and click Create.
b.
In the Circuit Creation dialog box, choose the type, such as VC_HO, and number, such as 1.
Click Next.
c.
In the next Circuit Creation dialog box, give the circuit an easily identifiable name such as
d.
G1K1toG1K5.
e.
Leave the Bidirectional check box checked.
Click Next.
f.
In the Circuit Creation source dialog box, select the same Node, Slot, Port, VC, and Tug where the
g.
test set is connected.
h.
Click Next.
In the Circuit Creation destination dialog box, use the same Node, Slot, Port, VC, and Tug used for
i.
the source dialog box.
j.
Click Next.
In the Circuit Creation circuit routing preferences dialog box, leave all defaults. Click Finish.
k.
Confirm that the newly created circuit appears on the Circuits tab list as a two-way circuit.
Step 4
Note
Create the facility (line) loopback on the destination port being tested:
Step 5
Go to the node view of the destination node:
a.
•
•
In node view, double-click the card that requires the loopback.
b.
Click the Maintenance > Loopback tab.
c.
Select Locked,maintenance from the Admin State column. If this is a multiport card, select the row
d.
appropriate for the desired port.
Select Facility (Line) from the Loopback Type column. If this is a multiport card, select the row
e.
appropriate for the desired port.
Click Apply.
f.
Click Yes in the confirmation dialog box.
g.
Complete the
Step 6
July 2005
It is normal for a
"LPBKFACILITY (G1000)" condition on page 2-169
loopback setup. The condition clears when you remove the loopback.
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.
"Test and Clear the Ethernet Facility (Line) Loopback Circuit" procedure on page
1.4.5 Perform a Facility (Line) Loopback on a Destination-Node Ethernet Port
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
to appear during a
1-76.
1-75
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