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Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)EV2
Chapter5 Configuring Transponder Line Card Interfaces
About Laser Shutdown
About OFC
The Cisco ONS 15530 allows you to enable the OFC safety protocol on the client side interfaces. When
the system detects an open fiber, the laser that transmits to the client equipment shuts down. An open
fiber condition occurs when the connectors to the client equipment are detached fro m the tra nsponde r
line card ports or when the fiber is cut (seeFigure 5-2).
Figure5 -2 OFC Overview
The OFC safety protocol conforms to the Fibre Channel stan da rd. I t appli es on l y to the Fibr e Chann el
and ISC compatibility mode encapsulations. The CiscoONS 15530 interoperates with
OFC-standard-compliant client equipment.
Caution Do not configure OFC with either forward laser control or laser safety control. Combining these
features interferes with the OFC protocol.
Use the encapsulation command, described in the Configuring Transponder Line Card Channel
Frequency section on page5-6 to configure OFC on a transparent interface.
Laser shuts down
Open fiber detected
Client side Trunk side
Transponder line card
Tx
Rx
Transmit laser
Transmit laser
Receiver
Receiver
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