Cisco ONS 15454 Troubleshooting Manual page 120

1.5.3 Perform a Hairpin Test on a Source-Node Ethernet Port
h.
i.
j.
k.
l.
Step 4 Confirm that the newly created circuit appears on the Circuits tab and that the Dir column describes it
as a one-way circuit.
Complete the
Step 5
Test and Delete the Ethernet Port Hairpin Circuit
If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 1
Examine the test traffic received by the test set. Look for errors or any other signal information that the
Step 2
test set is capable of indicating.
If the test set indicates a good circuit, no further testing is necessary with the hairpin circuit. Clear the
Step 3
hairpin circuit:
a.
b.
c.
d.
e.
Complete the
Step 4
Test the Standby Cross-Connect Card
Two cross-connect cards (active and standby) must be in use on a node to use this procedure.
Note
Perform a reset on the standby cross-connect card to make it the active card:
Step 1
a.
b.
c.
d.
Initiate an external switching command (side switch) on the cross-connect cards before you retest the
Step 2
loopback circuit:
Cisco ONS 15454 Troubleshooting Guide, R8.5
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In the Circuit Creation source dialog box, select the same Node, card Slot, Port, and STS (or VT)
where the test set is connected. Leave Use Secondary Source unchecked.
Click Next.
In the Circuit Creation destination dialog box, use the same Node, card Slot, Port, and STS (or VT)
used for the source dialog box. Leave Use Secondary Destination unchecked.
Click Next.
In the Circuit Creation circuit routing preferences dialog box, leave all defaults. Click Finish.
"Test and Delete the Ethernet Port Hairpin Circuit" procedure on page
Click the Circuits tab.
Choose the hairpin circuit being tested.
Click Delete.
Click Yes in the Delete Circuits dialog box. Do not check any check boxes.
Confirm that the hairpin circuit is deleted from the Circuits tab list.
"Test the Standby Cross-Connect Card" procedure on page
Determine the standby cross-connect card. On both the physical node and the CTC node view
window, the standby cross-connect ACT/SBY LED is amber and the active card ACT/SBY LED is
green.
Position the cursor over the standby cross-connect card.
Right-click and choose RESET CARD.
Click Yes in the confirmation dialog box.
Chapter 1 General Troubleshooting
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November 2009