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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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(Optional) Configuring a Port Priority in an MSTI

(Optional) Configuring a Port Priority in an MSTI


During spanning tree calculation, port priorities in MSTIs determine which ports are selected as designated ports.

To block a port in an MSTI to eliminate loops, set the port priority to a value larger than the default value. This port will be blocked during designated port selection.


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The Ethernet interface view is displayed.

  3. Run stp binding process process-id

    The port is bound to an MSTP process.

  4. Run stp [ process process-id ] instance instance-id port priority priority

    A port priority is set in an MSTI.

    By default, the port priority is 128.

    The priority value ranges from 0 to 240, in increments of 16.

Updated: 2019-10-18

Document ID: EDOC1000178310

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