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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 1 General Troubleshooting
1.10.12 No IP Connectivity Exists Between Nodes
1.10.12 No IP Connectivity Exists Between Nodes
Symptom No IP connectivity exists between nodes. The nodes have a gray icon. This problem is usually
accompanied by alarms.
Possible Cause A lost Ethernet connection.
Recommended Action Usually is accompanied by Ethernet-specific alarms. Verify the Ethernet
connections as described in the “1.10.16 Ethernet Connections” section on page 1-131.
1.10.13 DCC Connection Lost
Symptom DCC connection is lost. The node usually has alarms and the nodes in the network view have
a gray icon. This symptom is usually accompanied by an EOC alarm.
Possible Cause A lost DCC connection.
Recommended Action Usually accompanied by an EOC alarm. Clear the EOC alarm and verify the
DCC connection as described in the “EOC” alarm.
1.10.14 “Path in Use” Error When Creating a Circuit
Symptom While creating a circuit, you get a “Path in Use” error that prevents you from completing the
circuit creation.
Possible Cause Another user has already selected the same source port to create another circuit.
Recommended Action CTC does not remove a card or port from the available list until a circuit is
completely provisioned. If two users simultaneously select the same source port to create a circuit,
the first user to complete circuit provisioning gets use of the port. The other user gets the “Path in
Use” error. Cancel the circuit creation and start over, or click Back until you return to the initial
circuit creation window. The source port that was previously selected no longer appears in the
available list because it is now part of a provisioned circuit. Select a different available port and
begin the circuit creation process again.
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