Conditions for OCHNC Circuit Creation Failure
If the OCHNC circuit creation fails, you will see one of the following conditions:
• If the WPP wizard cannot complete the circuit creation procedure, CTC displays the error message shown
in
Figure 17: Partial Circuits, on page 78
. In the message, click Details to see the partial connections
that WPP can set up. Start troubleshooting the problem in the first node that is unreachable along the
path.
Figure 17: Partial Circuits
• The circuit is successfully created and reported under the Circuits tab, the Status field turns to
DISCOVERED, but the Circuit State is OOS (locked). The condition is shown in
Discovered, State OSS, on page 78
.
Figure 18: Circuit Discovered, State OSS
• The OCHNC circuit is shown under the Circuits tab, but the Status field reports PARTIAL. This applies
to a circuit successfully built-up when the network falls into scenarios a. or b (OSC link fail or APC
disabled), described below.
The root cause identification for the preceding conditions are found in the prerequisite conditions described
in
Prerequisites for Successful OCHNC Circuit Creation, on page 77
.
Scenarios for OCHNC Circuit Creation Failure
The most common scenarios for failure to create an OCHNC circuit are:
1.
One (or more) of the Span OSC links involving the OCHNC circuit has not been properly established.
The WPP application prevents the creation of any circuit passing through the failing span. Prerequisite
condition of
Prerequisites for Successful OCHNC Circuit Creation, on page 77
has not been met.
1.
The APC application is internally disabled due to the presence of a Critical alarm somewhere in the
network. As a consequence, no reliable information about the number of active channels can be shared
among the nodes and the creation of any further OCHNC circuit is prevented until the faulty condition
is fixed. Prerequisite condition 1 of
Prerequisites for Successful OCHNC Circuit Creation, on page
has not been met.
2.
One (or more) of the intranode connections between two DWDM cards associated with the circuit
have not been properly created. Prerequisite condition of 2
Prerequisites for Successful OCHNC
has not been met.
3.
One (or more) of the intranode connections between two DWDM cards associated with the circuit
have not been properly provisioned. This happens when ANS application has not run in one of the
involved nodes or at least one port status after the ANS run has not been successfully configured
(Fail-Out of Range alarm on the ANS panel). Prerequisite condition 3 of
OCHNC Circuit Creation, on page 77
has not been met.
To troubleshoot and eventually fix issues related to the faulty OCHNC circuit creation shown in
, the following procedure must be performed.
Corrective Action
SUMMARY STEPS
1.
Verify OSC connectivity:
Cisco NCS 2000 series Troubleshooting Guide, Release 11.0
78
General Troubleshooting
Conditions for OCHNC Circuit Creation Failure
