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Configuration Guide - Ethernet Switching

S7700 and S9700 V200R012C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, HVRP, and Layer 2 protocol transparent transmission.
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Setting the RSTP Network Diameter

Setting the RSTP 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.

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. Running this command also allows the switch to calculate the optimal Forward Delay timer value, Hello timer value, and Max Age timer value based on the configured network diameter.

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.

    NOTE:

    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.

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Updated: 2019-01-18

Document ID: EDOC1100038843

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