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CLI-based Configuration Guide - Ethernet Switching

AR650, AR1600, and AR6100 V300R003

This document describes how to configure the components for LAN services, including link aggregation groups, VLANs, voice VLANs, MAC address tables, transparent bridging, as well as GVRP, STP/RSTP, and MSTP protocols.
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Setting Parameters for Interoperation Between Huawei and Non-Huawei Devices

Setting Parameters for Interoperation Between Huawei and Non-Huawei Devices

To implement interoperation between Huawei and non-Huawei devices, select the fast transition mode based on the Proposal/Agreement mechanism of the non-Huawei device.

Context

A switching device supports the following Proposal/Agreement modes:

  • Enhanced mode: The device determines the root port when it calculates the synchronization flag bit.
    1. An upstream device sends a Proposal message to a downstream device to request fast state transition. After receiving the message, the downstream device sets the port connected to the upstream device as the root port and blocks all non-edge ports.

    2. The upstream device sends an Agreement message to the downstream device. After the downstream device receives the message, the root port transitions to the Forwarding state.

    3. The downstream device responds with an Agreement message. After receiving the message, the upstream device sets the port connected to the downstream device as the designated port, and then the designated port transitions to the Forwarding state.

  • Common mode: The device ignores the root port when it calculates the synchronization flag bit.
    1. An upstream device sends a Proposal message to a downstream device to request fast state transition. After receiving the message, the downstream device sets the port connected to the upstream device as the root port and blocks all non-edge ports. Then, the root port transitions to the Forwarding state.

    2. The downstream device responds with an Agreement message. After receiving the message, the upstream device sets the port connected to the downstream device as the designated port, and then the designated port transitions to the Forwarding state.

On an STP network, if a Huawei switching device is connected to a non-Huawei device that uses a different Proposal/Agreement mechanism, the two devices may fail to interoperate with each other. Select the enhanced mode or common mode based on the Proposal/Agreement mechanism of the non-Huawei device.

Pre-configuration Tasks

Before setting parameters for interoperation between Huawei and non-Huawei devices, configure basic STP/RSTP functions.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The view of an interface participating in spanning tree calculation is displayed.

  3. Run stp no-agreement-check

    The common fast transition mode is specified.

    By default, the enhanced fast transition mode is used on a port.

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Updated: 2019-04-12

Document ID: EDOC1100041791

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