Alcatel-Lucent 7750 Configuration Manual page 346

Interfaces
Note: OTU cannot be disabled on OTU3 encapsulated OC768 or 40-Gigabit Ethernet.by the no otu com-
mand.Therefore, the default depends on the port type. The default for OTU3 encapsulated OC768 or 40-
Gigabit Ethernet is otu.
The no form of this command disables OTU (clear channel 10GE-LAN/WAN or OC192).
Default no otu
fec
Syntax [no] fec {enhanced | g709}
Context config>port>otu>fec
Description This command enables the Forwarding Error Correction (FEC) encoder/decoder and specifies the FEC
encoder/decoder mode to use when enabled.
The following rules must be followed:
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•
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Note: FEC cannot be disabled on OTU3 encapsulated OC768 or 40-Gigabit Ethernetby the no fec com-
mand.Therefore, the default depends on the port type. The default for OTU3 encapsulated OC768 or 40-
Gigabit Ethernet is fec enhanced.
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 encapsulated
10GE-LAN signal ( No fixed stuffing bytes in the OTU2 frame).
11.0957 — Configures the port to transmit and receive an 11.0957 Gb/s synchronous OTU encapsulated
10GE-LAN signal (with fixed stuffing bytes in the OTU2 frame).
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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.
7750 SR Interface Configuration Guide