We can configure port breakout for all 40GE or 100GE interfaces, also we can configure port breakout for part of the 40GE or 100GE interfaces of the switch, the two procedures are different.

Configuring Port Breakout for All Interfaces

We can configure qe-interface-mode to SFP mode to breakout all 40GE or 100GE interfaces.

Step1 Configure qe-interface-mode as SFP mode.

admin@XorPlus# set interface qe-interface-mode SFP

NOTE:

By default, the qe-interface-mode is QSFP mode.

In SFP mode, all the 40GE interfaces are split into 4 x 10GE sub-interfaces, and all the 100GE interfaces are split into 4 x 25GE sub-interfaces.

Step2 Restart PICOS to make the setting take effect.

admin@XorPlus:~$ sudo systemctl restart picos

Step3 Verify the configuration.

run run show interface qe-interface-mode to check the qe-interface-mode.

admin@XorPlus# run show interface qe-interface-mode
qe-interface-mode:SFP

After system startup, run run show interface brief command to view the interface information. We can see that all 40GE and 100GE ports have been split.

admin@XorPlus# run show interface brief
Interface   Management  Status  Flow Control  Duplex  Speed  Description
----------  ----------  ------  ------------  ------  -------  ------------------------------
qe-1/1/25.1 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/25.2 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/25.3 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/25.4 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/26.1 Enabled     Down    Disabled      Full    Auto    
qe-1/1/26.2 Enabled     Down    Disabled      Full    Auto    
qe-1/1/26.3 Enabled     Down    Disabled      Full    Auto    
qe-1/1/26.4 Enabled     Down    Disabled      Full    Auto    
qe-1/1/27.1 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/27.2 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/27.3 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/27.4 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/28.1 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/28.2 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/28.3 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/28.4 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/29.1 Enabled     Down    Disabled      Full    Auto    
qe-1/1/29.2 Enabled     Down    Disabled      Full    Auto    
qe-1/1/29.3 Enabled     Down    Disabled      Full    Auto    
qe-1/1/29.4 Enabled     Down    Disabled      Full    Auto    
qe-1/1/30.1 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/30.2 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/30.3 Enabled     Up      Disabled      Full    10Gb/s  
qe-1/1/30.4 Enabled     Up      Disabled      Full    10Gb/s

Configuring Port Breakout for Part of the Interfaces

We can change qe-interface-mode from QSFP to FLEX mode, then breakout part of the 40GE or 100GE interfaces under FLEX mode as required.

Step1 Change qe-interface-mode from QSFP to FLEX mode.

a) Change qe-interface-mode from QSFP to FLEX mode.

admin@XorPlus# set interface qe-interface-mode FLEX

NOTE:

If the current qe-interface-mode is SFP mode, you need to change the port mode to QSFP mode first.

b) Restart PICOS to make the setting take effect.

admin@XorPlus:~$ sudo systemctl restart picos

Step2 In flexible mode, split the port as required.

a) Split the port as required.

set interface gigabit-ethernet <port-name> breakout <10g-4x | 25g-4x | donot>

NOTE:

This command can only be run in FLEX mode.

The 40GE interface can be split into four 10 Gigabit Ethernet sub-interfaces. The 100GE can be split into four 25 Gigabit Ethernet sub-interfaces or split into four 10 Gigabit Ethernet sub-interfaces.

When performing the port breakout operation, before restarting the system, you need to manually delete the configurations of the unavailable interfaces in the new mode, to make sure that the configuration file can be loaded normally when the system boots up.

b) Restart PICOS to make the setting take effect.

admin@XorPlus:~$ sudo systemctl restart picos

Step3 Verify the configuration.

Use run show interface qe-interface-mode command to check the qe-interface-mode.

admin@XorPlus# run show interface qe-interface-mode
qe-interface-mode:FLEX

After system startup, run run show interface brief command to view the interface information