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S9300, S9300E, and S9300X 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, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, HVRP, and Layer 2 protocol transparent transmission.
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Configuring Root Protection on a Port

Configuring Root Protection on a Port

Context

Due to incorrect configurations or malicious attacks on a network, a valid root bridge may receive BPDUs with a higher priority. Consequently, the valid root bridge is no longer able to serve as the root bridge and the network topology is changed, triggering spanning tree recalculation. As a result, traffic may be switched from high-speed links to low-speed links, causing network congestion. To prevent network congestion, enable root protection on the switch to protect the role of the root switch by retaining the role of the designated port.

NOTE:

Root protection takes effect only on designated ports.

Perform the following operations on the root bridge.

Procedure

  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 root-protection

    Root protection is enabled on the switch.

    By default, root protection is disabled on a switch port.

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Updated: 2019-01-18

Document ID: EDOC1100038290

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