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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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Configuring Root Protection on an Interface

Configuring Root Protection on an Interface

Context

Due to incorrect configurations or malicious attacks on the network, a root bridge may receive BPDUs with a higher priority. Consequently, the legitimate root bridge is no longer able to serve as the root bridge and the network topology is changed, triggering spanning tree recalculation. This also may cause the traffic that should be transmitted over high-speed links to be transmitted over low-speed links, leading to network congestion. The root protection function on a switching device is used to protect the root bridge by preserving the role of the designated port.

NOTE:

Root protection takes effect only on designated ports.

Perform the following steps on the root bridge in an MST region.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    interface interface-type interface-number

    The view of the Ethernet interface participating in STP calculation is displayed.

  3. Run:

    stp root-protection

    Root protection is configured on the switching device.

    By default, root protection is disabled.

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Updated: 2019-05-25

Document ID: EDOC1000097279

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