Setup Guide

Port-Pipes
A port pipe is a Dell EMC Networking-specic term for the hardware packet-processing elements that handle network trac to and from a
set of front-end I/O ports. The physical, front-end I/O ports are referred to as a
port-set. In the command-line interface, a port pipe is
entered as
port-set port-pipe-number.
CR4 Auto-Negotiation
You can congure interface type as CR4 with auto-negotiation enabled. Many DAC cable link issues are resolved by setting the interface
type as CR4. If the CR4 optic fails to come up, use the autoneg option.
To congure interface type as CR4 with auto-negotiation enabled, use the following commands.
• Set the interface type as CR4 with auto-negotiation enabled.
INTERFACE mode
intf-type cr4 autoneg
To disable CR4 auto-negotiation, use the no intf-type cr4 autoneg command.
• Verify the conguration.
INTERFACE mode
show config
Example of the intf-type cr4 autoneg Command
DellEMC(conf)#interface hundredGigE 1/1/1
DellEMC(conf-if-hu-1/1/1)#intf-type cr4 autoneg
DellEMC(conf-if-hu-1/1/1)#no intf-type cr4 autoneg
DellEMC(conf-if-hu-1/1/1)#show config
!
interface hundredGigE 1/1/1
no ip address
shutdown
no intf-type cr4 autoneg
Important Points to Remember
• For 10–Gigabit Ethernet interfaces, CR4 auto-negotiation is not applicable.
• For 100-Gigabit Ethernet interfaces, CR4 auto-negotiation is enabled by default.
• For 40–Gigbit, 25–Gigabit and 50–Gigabit Ethernet interfaces, CR4 auto-negotiation is disabled by default.
FEC Conguration
FEC congurations are available on 100–Gigbit, 50–Gigabit and 25–Gigabit Ethernet interfaces.
To congure FEC, use the following commands.
• Enable FEC.
INTERFACE mode
fec enable
The CL91 keyword enables RS-FEC on 100G interfaces as per IEEE. The system displays an error message when this is applied on 25G
or 50G interfaces.
The CL74 keyword enables BaseR-FEC on 25G or 50G interfaces as per 25G/50G Ethernet Consortium. The system displays an error
message when this is applied on 100G interfaces.
446
Interfaces