Test And Clear The Terminal Loopback Circuit - Cisco ONS 15600 SDH Troubleshooting Manual

Chapter 1 General Troubleshooting
Use CTC to set up the terminal loopback on the test port:
Step 2
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 3
Note
Create the terminal loopback on the destination port being tested:
Step 4
a.
b.
c.
d.
e.
f.
Complete the
Step 5

Test and Clear the Terminal Loopback Circuit

If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 1
Examine the test traffic being received by the test set. Look for errors or any other signal information
Step 2
that the test set is capable of indicating.
July 2010
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
Opt1toOpt2.
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 "LPBKTERMINAL (STMN)" condition on page 2-90
loopback setup. The condition clears when you remove the loopback.
In node view, double-click the ASAP card.
Click the Maintenance > Optical > Loopback > Port tabs.
Select Locked,maintenance from the Admin State column. If there are multiple available circuits,
select the row appropriate for the desired port.
Select Terminal from the Loopback Type column.
Click Apply.
Click Yes in the confirmation dialog box.
"Test and Clear the Terminal Loopback Circuit" procedure on page
1.2.2 Perform a Terminal Loopback on a Source-Node Optical Port
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
to appear during a
1-11.
1-11