fec

Configures Forward Error Correction (FEC) on either a 100 GbE port or a channelized 100 GbE port operating at 25 Gbps speed. On the 100 GbE ports, only the Clause 91 and Clause 108 options are supported. On the channelized ports, you can configure either Clause 108 for extra latency or Clause 74 for reduced latency. You can also configure the auto option to automatically configure FEC based on port speed and pluggable module type.

FEC is not supported on 100 Gbps ports operating at 40 Gbps speed or on a management port. On ports that support FEC configuration, ensure that you configure the same option at both end points. Otherwise, the link does not come up.

Syntax

default fec port {slot/port[/sub-port][-slot/port[/sub-port]][,...]}
fec {auto|cl91|cl108|cl74}
no fec port {slot/port[/sub-port][-slot/port[/sub-port]][,...]}

Command Parameters

{auto|cl91|cl108|cl74}: Configures FEC on either a 100 GbE port or a channelized 100 GbE port operating at 25 Gbps speed. On the 100 GbE ports, only the Clause 91 and Clause 108 options are supported. On the channelized ports, you can configure either Clause 108 for extra latency or Clause 74 for reduced latency. You can also configure the auto option to automatically configure FEC based on port speed and pluggable module type.; FEC is not supported on 100 Gbps ports operating at 40 Gbps speed or on a management port. On ports that support FEC configuration, ensure that you configure the same option at both end points. Otherwise, the link does not come up.

Default

The default is disabled.

Command Mode

GigabitEthernet Interface Configuration