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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 STP Timeout Interval

Setting the STP Timeout Interval

Context

If a device does not receive any BPDUs from the upstream device within the timeout interval, the device considers the upstream device to have failed and recalculates the spanning tree.

Sometimes, a device cannot receive the BPDU from the upstream device within the timeout interval because the upstream device is busy. In this case, recalculating the spanning tree will cause a waste of network resources. To avoid wasting network resources, set a long timeout interval on a stable network.

If a switching device does not receive any BPDUs from the upstream device within the timeout interval, spanning tree recalculation is performed. The timeout interval is calculated as follows:

Timeout interval = Hello time x 3 x Timer Factor

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    stp timer-factor factor

    The Timer Factor value is set. This parameter determines the timeout interval during which the device waits for BPDUs from the upstream device.

    By default, the timeout period is 9 times the Hello timer value.

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Updated: 2019-05-25

Document ID: EDOC1000097279

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