Enables/disables IEEE Forward Error Correction (FEC) Clause 74 or 91 modes.
| port_list | List of ports to enable/disable FEC modes on. |
| forward-error-correction | Configures port FEC mode. |
| off | Disables all FEC modes (default). |
| on | Enables FEC modes. |
| c174 | Enables/disables FEC IEEE Clause 74. |
| c191 | Enables/disables FEC IEEE Clause 91. |
FEC is not enabled by default.
This command allows you to enable/disable Clause 91 or Clause 74 (exclusively) on a per-port basis regardless of speed/type.
FEC gives the receiver the ability to correct errors without requiring a reverse channel to request retransmission of data, but at the cost of a fixed, higher forward channel bandwidth. Some devices require this to interoperate.
The following example enables FEC Clause 91 on port 1:
# configure ports 1 forward-error-correction on cl91
# configure ports 1 forward-error-correction off
This command was first available in ExtremeXOS 22.3.
This command is available on the ExtremeSwitching X590, X690, and X870 series switches.
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