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S12700 V200R012C00 Configuration Guide - Ethernet Switching

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, and Layer 2 protocol transparent transmission.
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(Optional) Configuring a Priority for a Device

(Optional) Configuring a Priority for a Device


An STP/RSTP network can have only one root bridge, which is the logical center of the spanning tree. The root bridge should be a high-performance device deployed at a high network layer. To ensure the desired device is selected as the root bridge, you can set a high priority for the device.

Set low priorities for devices that are not suitable as the root bridge, such as low-performance devices at lower network layers.

A smaller priority value indicates a higher priority of a device.


  1. Run system-view

    The system view is displayed.

  2. Run stp priority priority

    A priority is set for the device.

    The default priority value of a device is 32768.

    If the stp root primary or stp root secondary command has been executed to configure the device as the root bridge or secondary root bridge, run the undo stp root command to disable the root bridge or secondary root bridge function and then run the stp priority priority command to set a priority.

Updated: 2019-01-18

Document ID: EDOC1100038103

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