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1.3.4 Perform a Facility (Line) Loopback on an Intermediate-Node Optical Port
Retest the Original XC-VXL Cross-Connect Card
This procedure is performed only on STM-N and XC cards.
Note
Initiate an external switching command (side switch) on the cross-connect cards:
Step 1
a.
b.
c.
d.
Resend test traffic on the loopback circuit.
Step 2
If the test set indicates a faulty circuit, the problem is probably the defective card. Return the defective
Step 3
card to Cisco through the RMA process. Log into the Cisco Technical Support Website at
http://www.cisco.com/techsupport for more information or log into
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml to obtain a directory of toll-free Cisco
TAC numbers for your country.
Step 4
Proceed to
are finished with testing.
Complete the
Step 5
defective cross-connect card and perform
If the test set indicates a good circuit, the cross-connect card might have had a temporary problem that
Step 6
was cleared by the side switch. Clear the XC loopback circuit:
a.
b.
c.
d.
Step 7
Complete the
procedure on page
1.3.4 Perform a Facility (Line) Loopback on an Intermediate-Node Optical Port
Performing the facility (line) loopback test on an intermediate port isolates whether this node is causing
circuit failure. In the situation shown in
STM-N port.
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
1-48
Determine the standby cross-connect card. On both the physical node and the CTC node view
window, the standby cross-connect ACT/STBY LED is amber and the active card ACT/STBY LED
is green.
In node view, select the Maintenance > Cross-Connect > Card tabs.
In the Cross-Connect Cards area, click Switch.
Click Yes in the Confirm Switch dialog box.
Note
After the active cross-connect goes into standby mode, the original standby card becomes
active and its ACT/STBY LED turns green. The former active card becomes standby and its
ACT/STBY LED turns amber.
Step
5. If the circuit is not shown to be faulty and the card is not shown to be defective, you
"Physically Replace an In-Service Cross-Connect Card" procedure on page 2-271
Click the Circuits tab.
Choose the XC loopback circuit being tested.
Click Delete.
Click Yes in the Delete Circuits dialog box. Do not check any check boxes.
"1.3.4 Perform a Facility (Line) Loopback on an Intermediate-Node Optical Port"
1-48.
Step
6.
Figure
1-23, the test is being performed on an intermediate
Chapter 1
General Troubleshooting
for the
July 2005
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