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AR500, AR510, and AR530 V200R007 CLI-based Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring transparent bridge, MAC table, link aggregation, VLANs, STP/RSTP/MSTP, and so on.The document provides the configuration procedures and configuration examples to illustrate the service configuration methods and application scenario.
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Setting the MSTP Network Diameter

Setting the MSTP Network Diameter

Context

Any two terminals on a switching network are connected through a specific path along multiple devices. The network diameter is the maximum number of devices between any two terminals. A larger network diameter indicates a larger network scale.

An improper network diameter may cause slow network convergence and affect communication. Run the stp bridge-diameter command to set an appropriate network diameter based on the network scale, which helps speed up convergence.

It is recommended that all devices be configured with the same network diameter.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    stp bridge-diameter diameter

    The network diameter is configured.

    By default, the network diameter is 7.

    • RSTP uses a single spanning tree instance on the entire network. As a result, performance deterioration cannot be prevented when the network scale grows. Therefore, the network diameter cannot be larger than 7.

    • It is recommended that you run the stp bridge-diameter diameter command to set the network diameter. Then, the switching device calculates the optimal Forward Delay period, Hello timer value, and Max Age timer value based on the set network diameter.

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Updated: 2019-05-25

Document ID: EDOC1000097279

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