Flow control configuration notes

  • Auto-negotiation of flow control is not supported on 10 Gbps and 40 Gbps ports, fiber ports, and copper or fiber combination ports.
  • When any of the flow control commands are applied to a port that is up, the port will be disabled and re-enabled.
  • For 10 Gbps and 40 Gbps ports, the show interface command with the appropriate parameters shows whether Flow Control is enabled or disabled, depending on the configuration.
  • When flow-control is enabled, the hardware can only advertise PAUSE frames. It does not advertise Asym.
  • On ICX 7750 devices the default packet-forwarding method is cut-through, in which port flow control (IEEE 802.3x) is not supported but priority-based flow control (PFC) is supported. You can configure the store-and- forward command in global configuration mode to enable the store-and-forward method for packet-forwarding.
    Note: You must save the configuration and reload for the change to take effect. See the description of the store-and-forward command in the FastIron Command Reference for more information.
Parent topic: Flow Control Configuration