Cisco Systems ONS 15310-CL, ONS 15310-MA 1.10.3 AIS-V on Unused 15310-CL-CTX Card VT Circuits

1-65
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter1 General Troubleshooting
1.10.3 AIS-V on Unused 15310-CL-CTX Card VT Circuits
1.10.3 AIS-V on Unused 15310-CL-CTX Card VT Circuits
Symptom An incomplete circuit path causes an alarm indications signal (AIS).
Table 1 -22 describes the potential cause of the symptom and the solution.
Clear AIS-V on Unused Controller Card VT Circuits
Step1 Determine the affected port.
Step2 Record the node ID, slot number, port number, and VT number.
Step3 Create a unidirectional VT circuit from the affected port back to itself, such as
Source node/Slot2/Port 2/VT 13 cross connected to Source node/Slot 2/Port 2/VT 13.
Step4 Uncheck the Bidirectional check box in the circuit creation window.
Step5 Give the unidirectional VT circuit an easily recognizable name, such as DeleteMe.
Step6 Display the controller card (15310-CL-CTX or CTX2500) in CTC card view. Click the Maintenance >
DS1 tabs.
Step7 Locate the VT that is reporting the alarm (for example, DS3 #2, DS1 #13).
Step8 From the Loopback Type list, choose Facility and click Apply.
Step9 Click Circuits.
Step10 Find the one-way circuit you created in Step3. Select the circuit and click Delete.
Step11 Click Yes in the Delete Confirmation dialog box.
Step12 In node view, double-click the controller card (15310-CL-CTX or CTX2500). The card view appears.
Step13 Click the Maintenance > DS1 tabs.
Step14 Locate the VT in the Facility Loopback list.
Step15 From the Loopback Type list, choose None and then click Apply.
Step16 Click the Alarm tab and verify that the AIS-V alarms have cleared.
Step17 Repeat this procedure for all the AIS-V alarms on the controller.
Table1-22 AIS-V on Unused 15310-CL-CTX Card VT Circuits
Possible Problem Solution
The port on the
reporting node is
in-service but a node
upstream on the circuit
does not have an OC-N
port in service.
An AIS-V indicates that an upstream failure occurred at the VT layer. AIS-V
alarms also occur on VT circuits that are not carrying traffic and on stranded
bandwidth.
Perform the “Clear AIS-V on Unused Controller Card VT Circuits”
procedure on page 1-65.