Cisco ONS 15310-MA Troubleshooting Manual page 84

Alarm Procedures
The Loss of Alignment on a VCG is a VCAT member alarm. (VCAT member circuits are independent
circuits that are concatenated from different time slots into a higher-rate signal.) The alarm occurs when
members of a VCG travel over different paths in the network (due to initial operator provisioning or to
protection or restoration events) and the differential delays between the paths cannot be recovered by
terminating hardware buffers.
This alarm occurs only if you provision circuits outside of CTC, such as by using TL1.
Note
Clear the LOA Alarm
Step 1 In network view, click the Circuits tab.
Click the alarmed VCG and then click Edit.
Step 2
In the Edit Circuit window, view the source and destination circuit slots, ports, and VCs.
Step 3
Identify whether the VC travels across different fibers. If it does, complete the
Step 4
procedure on page
Recreate the circuit using the procedure in the "Create Circuits" chapter in the Cisco ONS15310-MA
Step 5
SDH Procedure Guide.
Step 6 If the alarm 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) in order to report a Service-Affecting (SA) problem.
2.7.118 LOCKOUT-REQ
The Lockout Switch Request on Facility or Equipment condition occurs when a user initiates a lockout
switch request for an STM-N port in a 1+1/LMSP facility protection group. This can be accomplished
by locking traffic onto the working port with the LOCK ON command (thus locking it off the protect
port), or locking it off the protect port with the LOCK OUT command. In either case, the protect port
will show "Lockout of Protection," and the Conditions window will show the LOCKOUT-REQ
condition.
A lockout prevents protection switching. Clearing the lockout again allows protection switching and
clears the LOCKOUT-REQ condition.
Clear the LOCKOUT-REQ Condition
Complete the
Step 1
page
If the condition does not clear, log into the Technical Support Website at
Step 2
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447).
Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
2-84
2-154.
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH Logical Objects: STM, VCMON-HP, VCMON-LP
"Clear an External Switching Command on a Path Protection Span" procedure on
2-151.
Chapter 2 Alarm Troubleshooting
"Delete a Circuit"
78-18663-01