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CLI-based Configuration Guide - Interface Management

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples of the interfaces supported by the device.
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Configuring the Flow Control Function

Configuring the Flow Control Function

Context

Network congestion causes packet loss. Flow control is a method to prevent packet loss. If network congestion occurs on the local device, the local device sends a message to the remote device, instructing the remote device to reduce the packet sending rate. After receiving the message, the remote device reduces its packet sending rate, which prevents congestion.

GE interfaces support flow control and flow control auto-negotiation. The two negotiation functions cannot be enabled simultaneously on an interface.

Procedure

  • Configuring the flow control function
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The interface view is displayed.

    3. Run flow-control

      The flow control function is enabled.

      By default, flow control is disabled on an Ethernet interface.

      NOTE:

      Flow control takes effect when the flow control function is enabled for interfaces on both ends of a link.

      The GE interfaces on the AR2201-48FE, AR2202-48FE, AR2204-51GE-P, AR2204-51GE-R, AR2204-27GE-P, AR2204-27GE, AR2204E, AR2204E-D and AR2204 do not support flow control.

  • Configuring flow control auto-negotiation for GE interfaces
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The interface view is displayed.

    3. Run negotiation auto

      The Ethernet interface is configured to work in auto-negotiation mode.

    4. Run flow-control negotiation

      Flow control auto-negotiation is enabled on the GE interfaces.

      By default, flow control auto-negotiation is disabled on a GE interfaces.

      NOTE:

      Flow control auto-negotiation takes effect only when the function is enabled for interfaces on both ends of a link.

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Updated: 2019-03-06

Document ID: EDOC1100069331

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