Forward Error Correction (FEC) Types
Forward error correction can be provisioned on OTU and optical channel interfaces. The following are the supported configurations:
Table 1: FEC Types
Supported FEC Types
OTU2 or OTU2e
Note: The ports on the 12x SFP+ BIC are divided into three port groups (ports 1 to 4, ports 5 to 8, ports 9 to 12). Within each port group, you cannot configure one port for G.975.1 i.4 Super FEC and another port for G.975.1 i.7 Super FEC. The Super FEC settings are mutually exclusive within a port group.
On a UFM6, all 10-Gbps client ports within the same QSFP+ transceiver have a similar restriction. You cannot configure one 10-Gbps port for G.975.1 i.4 Super FEC and another 10-Gbps port on the same transceiver for G.975.1 i.7 Super FEC. The Super FEC settings are mutually exclusive within a transceiver.
OTU4 on 100G Coherent MSA XCVR
OTU4 on 100G Coherent CFP
OTU4 on all other CFPs
OTU4 on the QSFP28 100GE Ethernet/OTN LR4 (QSFP-100G-LR4-D (740-073859))
Optical channel on 400G Coherent MSA XCVR
Note: This FEC is applied to the optical channel, which can include one or two OTU4 signals.
sd-fec-25pc) for QPSK modulation
soft-fec) for QPSK modulation