Install Guide

Table Of Contents
Port-Pipes
A port pipe is a Dell EMC Networking-specific term for the hardware packet-processing elements that handle network traffic 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 configure 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 configure 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 configuration.
INTERFACE mode
show config
DellEMC(conf)#interface hundredGigE 1/49
DellEMC(conf-if-hu-1/49)#intf-type cr4 autoneg
DellEMC(conf-if-hu-1/49)#no intf-type cr4 autoneg
DellEMC(conf-if-hu-1/49)#show config
!
interface hundredGigE 1/49
no ip address
shutdown
no intf-type cr4 autoneg
Important Points to Remember
For 10Gigabit Ethernet interfaces, CR4 auto-negotiation is not applicable.
For 100-Gigabit Ethernet interfaces, CR4 auto-negotiation is enabled by default.
For 40Gigbit, 25Gigabit and 50Gigabit Ethernet interfaces, CR4 auto-negotiation is disabled by default.
Setting the Speed of Ethernet Interfaces
To discover whether the remote and local interface requires manual speed synchronization, and to manually synchronize them if
necessary, use the following command sequence.
1. Determine the local interface status. Refer to the following example.
EXEC Privilege mode
show interfaces [interface | stackunit stack-unit-number] status
2. Determine the remote interface status.
EXEC mode or EXEC Privilege mode
[Use the command on the remote system that is equivalent to the first command.]
3. Access CONFIGURATION mode.
EXEC Privilege mode
config
4. Access the port.
CONFIGURATION mode
interface interface-type
5. Set the local port speed.
INTERFACE mode
Interfaces
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