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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 1 General Troubleshooting
1.11.1 OC-N Circuit Transitions to Partial State
1.11.1 OC-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, which indicates that not all OC-N connections in the circuit are in the IS-NR
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 state persists, determine
which node in the circuit is not changing to the desired state. Complete the “View the State of OC-N
Circuit Nodes” procedure on page 1-135. Log into the circuit node that did not change to the desired
state and determine the version of software. If the software on the node is Software R3.3 or earlier,
upgrade the software. Refer to the release-specific software upgrade document for procedures.
Note If the node software cannot be upgraded to R4.0, the partial state condition can be avoided
by using only the circuit state 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.
Complete the “View the State of OC-N Circuit Nodes” procedure on page 1-135. 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. See Chapter 2, “Alarm Troubleshooting,” for procedures to
clear alarms. Refer to the “Manage Circuits” chapter in the Cisco ONS 15454 Procedure Guide for
instructions to 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.
View the State of OC-N Circuit Nodes
Step 1 Click the Circuits tab.
Step 2 From the Circuits tab list, select the circuit with the *_PARTIAL status condition.
Step 3 Click Edit. The Edit Circuit window appears.
Step 4 In the Edit Circuit window, click the State tab (if you are viewing a SONET circuit).
The State tab window lists the Node, End A, End B, CRS Admin State, and CRS Service State for each
of the nodes in the circuit.
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