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Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 10 Network Reference
10.4.3 Managing APC
• APC Disabled—APC is disabled, either by a user or internal action.
After the error condition is cleared, the signaling protocol enables APC on the network and the APC
DISABLE - INTERNAL condition is cleared. Because APC is required after channel provisioning to
compensate for ASE effects, all optical channel network connection (OCHNC) and optical channel client
connection (OCHCC) circuits that you provision during the disabled APC state are kept in the
Out-of-Service and Autonomous, Automatic In-Service (OOS-AU,AINS) (ANSI) or
Unlocked-disabled,automaticInService (ETSI) service state until APC is enabled. OCHNCs and
OCHCCs automatically go into the In-Service and Normal (IS-NR) (ANSI) or Unlocked-enabled (ETSI)
service state only after APC is enabled.
10.4.3 Managing APC
The APC status is indicated by four APC states shown in the node view status area:
• Enabled—APC is enabled.
• Disabled—APC was disabled manually by a user.
• Disable - Internal—APC has been automatically disabled for an internal cause.
• Not Applicable—The node is provisioned to Not DWDM, which does not support APC.
You can view the APC information and disable and enable APC manually on the Maintenance >
DWDM > APC tab. See Figure 10-11 for an example of how the information is displayed.
Caution When APC is disabled, aging compensation is not applied and circuits cannot be activated. Do not
disable APC unless it is required for specific maintenance or troubleshooting tasks. Always enable APC
as soon as the tasks are completed.
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