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1.4.2 Perform a Terminal (Inward) Loopback on a Source-Node Ethernet Port
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 terminal (inward) loopback on the destination port being tested:
Step 5
a.
b.
c.
d.
e.
f.
Complete the
Step 6
Test and Clear the Ethernet Terminal Loopback Circuit
Step 1
If the test set is not already sending traffic, send test traffic on the loopback circuit.
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.
Step 3
If the test set indicates a good circuit, no further testing is necessary on the loopback circuit. Clear the
terminal loopback state on the port:
a.
b.
c.
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
1-66
Click Next.
In the next Circuit Creation dialog box, give the circuit an easily identifiable name such as
G1K1toG1K2.
Leave the Bidirectional check box checked.
Click Next.
In the Circuit Creation source dialog box, select the same Node, Slot, Port, VC, and Tug where the
test set is connected.
Click Next.
In the Circuit Creation destination dialog box, use the same Node, Slot, Port, VC, and Tug 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(G1000)" condition on page 2-173
loopback setup. The condition clears when you remove the loopback.
In node view, double-click the card that requires the loopback, such as the destination G1000 card
in the source node.
Click the Maintenance > Loopback tab.
Select Locked,maintenance from the Admin State column. If this is a multiport card, select the row
appropriate for the desired port.
Select Terminal (Inward) from the Loopback Type column. If this is a multiport card, select the
row appropriate for the desired port.
Click Apply.
Click Yes in the confirmation dialog box.
"Test and Clear the Ethernet Terminal Loopback Circuit" procedure on page
Double-click the card in the source node with the terminal loopback.
Click the Maintenance > Loopback tab.
Select None from the Loopback Type column for the port being tested.
Chapter 1
General Troubleshooting
to appear during a
1-66.
July 2005
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