Configuring breakout mode

Before performing the following procedure, you can verify the current port configuration using the show interface status command:

--------------------------------------------------------------------------------
Port         Status          Mode       Speed    Type            Description
--------------------------------------------------------------------------------
Eth 0/1      adminDown       --         --        --                                  
Eth 0/2      adminDown       --         --        --                                  
Eth 0/3      adminDown       --         --        --                                  
Eth 0/4      adminDown       --         --        --                                  
Eth 0/5      adminDown       --         --        --                                  
Note

Note

When configuring breakout mode - either breaking into multiple interfaces or consolidating into one interface - it is a best practice to remove all configuration on the interface, and set the interface to the disabled state.

Perform the following steps:

  1. Access global configuration mode.
    device# configure terminal
  2. Shut down the port or ports to be configured.
    device (config)# interface ethernet 0/1
    shutdown
    exit

    Or;

    device (config)# interface ethernet 0/1:1-4
    shutdown
    exit
  3. Access hardware configuration mode.
    device(config)# hardware
  4. Access the port to be configured.
    device(config-hardware)# connector 0/1
  5. Set the breakout mode.
    device(config-connector-0/1)# breakout mode 4x10g
    Note

    Note

    Dynamic breakout is supported; the user does not need to reboot the switch to execute the breakout.
  6. Exit configuration mode.
    device(config-connector-0/1)# exit
    device(config-hardware)# exit
    device(config)#
  7. Verify the configuration.
    device(config)# show interface status
    --------------------------------------------------------------------------------
    Port         Status          Mode       Speed    Type            Description
    --------------------------------------------------------------------------------
    Eth 0/1:1      adminDown       --         --        --                                  
    Eth 0/1:2      adminDown       --         --        --                                  
    Eth 0/1:3      adminDown       --         --        --                                  
    Eth 0/1:4      adminDown       --         --        --                                  
    Eth 0/2        adminDown       --         --        --                                  
    Eth 0/3        adminDown       --         --        --                                  
    Eth 0/4        adminDown       --         --        --                                  
    Eth 0/5        adminDown       --         --        --