Configuring Breakout Ports and Subports

You can configure breakout ports in global configuration mode. After successful configuration and activation of breakout, the subports are available for configuration. By default, all main 40-Gbps ports are configured to come up in 40-Gbps mode.
  1. Enter global configuration mode.
    device# configure terminal
  2. Configure the breakout port.
    device(config)# breakout ethernet 1/2/1
device# write memory
device# reload
    Note: The RUCKUS ICX 7550-24ZP, ICX 7550-48ZP, ICX 7550-24F, and ICX 7550-48F models require configuring the slot 2 uplink-100g command before configuring breakout.

    The RUCKUS ICX 7550-24ZP and ICX 7550-24F models require configuring the slot 2 uplink-40g command before applying the breakout on ports 1/2/1 and 1/2/2 and then reload to take effect. The slot 2 operates in uplink mode with 40-Gbps speed after reload.

    The breakout ethernet command divides the ports into subports when a breakout cable is attached.

    The breakout ethernet command first checks the existing configuration on the port. If an existing configuration is detected, an error message is displayed to indicate that the prior configuration must be removed. Then, the breakout ethernet command must be rerun and the resulting configuration must be saved and reloaded before the four 10-Gbps subports are created.

  3. Configure the subports.
    device(config)# interface ethernet 1/2/1:1 to 1/2/1:4
    In the example, port 1/2/1 has been configured for breakout into four 10-Gbps subports. Subports are denoted by special four-tuple notation to indicate unit, slot, port, and subport.
    Note: Once breakout is removed and the device is reloaded, the subports and their configuration are also removed.
Parent topic: Overview of Breakout Ports