g709 fec
To configure the Forward Error Correction (FEC) mode for the DWDM controller, use the g709 fec command
in DWDM configuration mode. To return to the default state, use the no form of this command.
g709 fec {[disable]| enhanced| standard| ci-bch| high-gain-sd-fec| long-haul-sd-fec}
no g709 fec {disable| enhanced| standard}
Syntax Description
Disables FEC.disable
Enables ITU-T G.975.1 I.4 FEC.enhanced
Enables standard FEC mode.This is the default.standard
Continuously Interleaved BCH FECci-bch
7% CISCO SD FEC.high-gain-sd-fec
20% CISCO SD FEC.long-haul-sd-fec
Command Default
Standard FEC mode is enabled by default.
Command Modes
DWDM configuration
Command History
ModificationRelease
This command was introduced.Release 3.9.0
The ci-bch keyword was introduced.Release 5.3.1
The high-gain-sd-fec and long-haul-sd-fec keywords were introduced
on the A9K-400G-DWDM-TR line card.
Release 5.3.2
Usage Guidelines
The enhanced FEC mode supported on the Cisco CRS Router (ITU-T G.975.1 I.7) and the Cisco ASR 9000
Series Router (ITU-T G.975.1 I.4) are different and therefore, incompatible. To support interoperability
of DWDM between these routers, standard FEC must be configured.
Note
The g709 fec command can be used only when the DWDM controller port is in the out-of-service administrative
state. You stop operation using the admin-state out-of-service command.
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
9
Dense Wavelength Division Multiplexing Commands on the Cisco ASR 9000 Series Router
g709 fec
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