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Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Alarm Procedures
Clear the TX-RAI Condition
Step 1 Complete the “Clear the TX-AIS Condition” procedure on page 2-140.
If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC (1 800
553-2447).
2.7.230 HP-UNEQ
Default Severity: Critical (CR), Service-Affecting (SA)
SDH Logical Objects: VCMON-HP, VCTRM-HP
An SLMF UNEQ Path alarm occurs when the path does not have a valid sender. The HP-UNEQ indicator
is carried in the C2 signal path byte in the SDH overhead. The source of the problem is the node that is
transmitting the signal into the node reporting the HP-UNEQ.
The alarm could result from an incomplete circuit or an empty VC tunnel. HP-UNEQ occurs in the node
that terminates a path.
Note If a newly created circuit has no signal, an HP-UNEQ alarm is reported on the STM1 ports and the
“AU-AIS” condition on page 2-20 is reported on the terminating ports. These alarms clear when the
circuit carries a signal.
Clear the HP-UNEQ Alarm
Step 1 In node view, click View > Go to Network View.
Step 2 Right-click the alarm to display the Select Affected Circuits shortcut menu.
Step 3 Click Select Affected Circuits.
Step 4 When the affected circuits appear, look in the Type column for VTT, which indicates a VC tunnel circuit.
A VC tunnel with no VCs assigned could be the cause of an HP-UNEQ alarm.
Step 5 If the Type column does not contain VTT, there are no VC tunnels connected with the alarm. Go to
Step 7.
Step 6 If the Type column does contain VTT, attempt to delete these rows by completing the following steps:
Note The node does not allow you to delete a valid VC tunnel or one with a valid VC circuit inside.
a. Click the VC tunnel circuit row to highlight it. Complete the “Delete a Circuit” procedure on
page 2-154.
b. If an error message dialog box appears, the VC tunnel is valid and not the cause of the alarm.
c. If any other columns contain VTT, repeat Step 6.
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