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AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009 CLI-based Configuration Guide - Ethernet Switching

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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: 2019-05-17

Document ID: EDOC1000174108

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