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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter 2 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 page 1-3; for optical circuits, refer to the
“1.3 Identify Points of Failure on an OC-N Circuit Path” section on page 1-14. Terminal loopbacks are
described in the “1.1.2 Terminal Loopback” section on page 1-3.
Clear the LPBKTERMINAL (OCN) Condition
Step 1 Complete the “Clear an OC-N Port Facility or Terminal Loopback Circuit” procedure on page 2-156.
Step 2 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC (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 ONS 15310-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 120 seconds. (For information about changing this threshold, refer to
the “Turn Up Node” chapter in the Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide.)
Clear the LWBATVG Alarm
Step 1 The problem is external to the ONS 15310-CL or ONS 15310-MA. Troubleshoot the power source
supplying the battery leads.
Step 2 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC (1-800-553-2447) in order to report a Service-Affecting (SA)
problem.
2.7.164 MAN-REQ
Default Severity: Not Alarmed (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.