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Configuration Guide - Ethernet Switching

S7700 and S9700 V200R011C10

This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.
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Setting the RSTP Timeout Interval

Setting the RSTP 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: 2019-10-18

Document ID: EDOC1000178310

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