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Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
July 2005
Chapter 1 General Troubleshooting
1.11 Circuits and Timing
Note The attached external devices must recognize IEEE 802.1Q VLANs.
Step 5 After each port is in the appropriate VLAN, click Apply.
1.11 Circuits and Timing
This section provides solutions to circuit creation and reporting errors, as well as common timing
reference errors and alarms.
1.11.1 STM-N Circuit Transitions to Partial State
Symptom An automatic or manual transition of a circuit from one state to another state results in the
OOS-PARTIAL status. At least one of the connections in the circuit is in the Unlocked-enabled service
state, and at least one other connection in the circuit is in the Locked-enabled,maintenance;
Locked-enabled,disabled; or Unlocked-disabled,automaticInService service state.
Possible Cause During a Manual transition, CTC cannot communicate with one of the nodes or one
of the nodes is on a version of software that does not support the new state model.
Recommended Action Repeat the Manual transition operation. If the PARTIAL status persists,
determine which node in the circuit is not changing to the desired state. Refer to the “View the State
of Circuit Nodes” procedure on page 1-133. Log onto the circuit node that did not change to the
desired state and determine the version of software.
Note If the node software cannot be upgraded to R4.0, the PARTIAL status condition can be
avoided by only using the circuit state(s) supported in the earlier software version.
Possible Cause During an automatic transition, some path-level defects and/or alarms were detected
on the circuit.
Possible Cause One end of the circuit is not properly terminated.
Recommended Action Determine which node in the circuit is not changing to the desired state. Refer
to the “View the State of Circuit Nodes” procedure on page 1-133. Log onto the circuit node that did
not change to the desired state and examine the circuit for path-level defects, improper circuit
termination, or alarms. Refer to the Cisco ONS 15454 SDH Procedure Guide Chapter 7, “Manage
Alarms,” for procedures to clear alarms and change circuit configuration settings. Resolve and clear
the defects and/or alarms on the circuit node and verify that the circuit transitions to the desired
state.
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