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● Verify the configuration.
INTERFACE mode
show config
example for the fec enable command for a 100G interface.
DellEMC(conf-if-hu-1/49)#fec enable cl91
DellEMC(conf-if-hu-1/49)#show config
!
interface hundredGigE 1/49
no ip address
shutdown
intf-type cr4 autoneg
fec enable
Example of the fec enable cl74 command on a 25G interface.
DellEMC(conf-if-tf-1/3)#fec en cl74
DellEMC(conf-if-tf-1/3)#show config
!
interface twentyFiveGigE 1/3
no ip address
no shutdown
fec enable cl74
Example of the fec enable cl108 command on a 25G interface.
DellEMC(conf-if-tf-1/3)#fec en cl108
DellEMC(conf-if-tf-1/3)#show config
!
interface twentyFiveGigE 1/3
no ip address
no shutdown
fec enable cl108
Example of the fec enable cl74 command on a 50G interface.
DellEMC(conf-if-fi-1/51/1)#fec en cl74
DellEMC(conf-if-fi-1/51/1)#show config
!
interface fiftyGigE 1/51/1
no ip address
no shutdown
fec enable cl74
Example of the fec enable cl108 command on a 50G interface.
DellEMC(conf-if-fi-1/51/1)#fec en cl108
DellEMC(conf-if-fi-1/51/1)#show config
!
interface fiftyGigE 1/51/1
no ip address
no shutdown
fec enable cl108
Important Points to Remember
● For 10–Gigabit and 40–Gigabit Ethernet interfaces, FEC configurations are not applicable.
● CR4 auto-negotiation and FEC CL91 are enabled based on the media type.
● For 25G interfaces, CR1 autonegotiation, FEC CL74, CL108 are enabled based on the media types. You can enable or disable
FEC and auto negotiation irrespective of each other.
● For 50G interfaces, CR2 autonegotiation is enabled by default. FEC CL74 and CL108 are enabled based on the media type.
You can enable or disable FEC and auto negotiation irrespective of each other
● To view CR4 auto-negotiation and FEC configurations for 25–Gigabit, 50–Gigabit and 100–Gigabit Ethernet interfaces, use
the show interfaces command.
Interfaces
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