Shows the IEEE Forward Error Correction (FEC) Clause 74 or 91 status of the port(s).
| port_list | List of ports to show FEC modes status on. | 
| forward-error-correction | Specifies port FEC mode status. | 
| refresh | Specifies a continuous refresh of output. | 
| no-refresh | Specifies a static snapshot of data. | 
| port-number | Displays port number instead of display string. | 
N/A.
The following example shows the FEC status for port 1:
show port 1 forward-error-correctionPort Forward-Error-Correction Status Monitor
Port      Link   Forward-Error-Correction            
          State  State        Clause 
================================================================================
1         R      NA           CL74    
================================================================================
          Link State: A-Active, R-Ready, NP-Port Not Present L-Loopback
          Forward-Error-Correction State: E-Enabled, D-Disabled, NA-Not Available
          Clause: CL74-(Clause 74), CL91-(Clause 91), Unknown
    This command was first available in ExtremeXOS 22.3.
This command is available on the ExtremeSwitching X465, X590, X695 series switches.