Alcatel-Lucent 7750 SR OS Interface Configuration Manual page 288

Configuration Commands
The no form of the command disables FEC encoder and decoder.
Default
no fec
Parameters
enhanced — Enables the FEC encoder and decoder with a proprietary enhanced FEC algorithm.
g709 — Enables the FEC encoder and decoder with the standard G.709 FEC algorithm.
otu2-lan-data-rate
Syntax otu2-lan-data-rate {11.049 | 11.0957}
Context config>port>otu
Description
This command specifies the data rate to use when configured for an OTU encapsulated 10GE-LAN
signal. The port must be shut down before changing the 10GE LAN OTU2 data rate.
Default 11.049
Parameters
11.049 — Configures the port to transmit and receive an 11.049 Gb/s synchronous OTU
11.0957 — Configures the port to transmit and receive an 11.0957 Gb/s synchronous OTU
sf-sd-method
Syntax sf-sd-method {bip8 | fec}
Context config>port>otu>sf-sd-method
Description This command specifies the method used to determine the signal fail and signal degrade alarms.
When select the bip8 method is selected, the SM-BIP8 errors are used. When the FEC method is
selected, the FEC corrected bits are used.
The following rules must be followed:
Default
fec
Parameters bip8 — The SM-BIP8 errors are used to declare the presence of the Signal Fail and Signal Degrade
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• The port's OTU must be enabled to set or change the FEC mode.
• The port must be shut down before changing the FEC mode.
• The sf-sd-method must be changed to BIP8 before setting the FEC mode to disabled.
encapsulated 10GE-LAN signal ( No fixed stuffing bytes in the OTU2 frame).
encapsulated 10GE-LAN signal (with fixed stuffing bytes in the OTU2 frame).
• The port's OTU must be enabled to set or change the sf-sd-method.
• The FEC mode must be enhanced or g709 before setting the sf-sd-method to fec.
• The SF threshold must be 5 or higher before setting the sf-sd-method to bip8.
condition.
7750 SR OS Interface Configuration Guide