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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter2 Alarm Troubleshooting
2.7.163 LWBATVG
Note Performing a loopback on an in-service circuit is Service-Affecting(SA). If you did not perform a
lockout or Force switch to protect traffic, the LPBKTERMINAL condition can also be accompanied by
a more serious alarm such as LOS.
For information about troubleshooting electrical circuits with loopbacks, refer to the “1.2 Identify
Points of Failure on an Electrical Circuit Path” section on page1-3; for optical circuits, refer to the
“1.3 Identify Points of Failure on an OC-N Circuit Path” section on page1-14. Terminal loopbacks are
described in the “1.1.2 Terminal Loopback” section on page1-3.

Clear the LPBKTERMINAL (OCN) Condition

Step1 Complete the “Clear an OC-N Port Facility or Terminal Loopback Circuit” procedure on page2-156.
Step2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call CiscoTAC (1-800-553-2447).
2.7.163 LWBATVG
Default Severity: Major(MJ), Service-Affecting (SA)
SONET Logical Object: PWR
The Low Voltage Battery alarm occurs in a –48 VDC environment for an ONS15310-CL or
ONS 15310-MA when a battery lead input voltage falls below the low power threshold. This threshold
has a preset value of –44 VDC and is not user-provisionable. The alarm remains raised until the voltage
remains above the threshold for 120seconds. (For information about changing this threshold, refer to
the “Turn Up Node” chapter in the CiscoONS 15310-CL and CiscoONS 15310-MA Procedure Guide.)

Clear the LWBATVG Alarm

Step1 The problem is external to the ONS15310-CL or ONS 15310-MA. Troubleshoot the power source
supplying the battery leads.
Step2 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call CiscoTAC (1-800-553-2447) in order to report a Service-Affecting (SA)
problem.
2.7.164 MAN-REQ
Default Severity: NotAlarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: STSMON, VT-MON
The Manual Switch Request condition occurs when a user initiates a Manual switch request on an OC-N
port. Clearing the Manual switch clears the MAN-REQ condition. You do not need to clear the switch if
you want the manual switch to remain.