Paragon-neo: What types of Forward Error Correction (FEC) are supported?

Forward Error Correction is supported on the Paragon-neo interfaces as described in the table below:

Rate / Modulation	FEC Type	Reference

Rate / Modulation	FEC Type	Reference
25G BASE-R / NRZ	RS-FEC (528, 514)	IEEE 802.3by Clause 108
50G BASE-R / NRZ	RS-FEC (528, 514)	Ethernet Consortium Schedule 3. RS-FEC (Clause 91 sublayer)
100G BASE-R / NRZ	RS-FEC (528, 514)	IEEE 802.3bj Clause 91
50G BASE-R / PAM4	RS-FEC (544,514) KP	IEEE 802.3cd clause 134
200G BASE-R / PAM4	RS-FEC (544,514) KP	IEEE 802.3bs clause 119
400G BASE-R / PAM4	RS-FEC (544,514) KP	IEEE 802.3bs clause 119

As FEC is mandatory for PAM4 interfaces, when a PAM4 interface is selected FEC is set to on in the Paragon-neo GUI, and cannot be disabled.

Paragon-neo “Setup Ports” screenshot showing location of FEC control checkboxes

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