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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 Edge Ports and BPDU Filter Ports

Configuring Edge Ports and BPDU Filter Ports

Context

As defined in RSTP, a port that is located at the edge of a network and directly connected to a terminal device is an edge port.

An edge port does not process configuration BPDUs or participate in RSTP calculation. It can transit from the Disable to Forwarding state without any delay.

Edge ports can still send BPDUs. If the BPDUs are sent to another network, this network may encounter network flapping. To prevent this problem, configure the BPDU filter function on edge ports so that the edge ports do not process or send BPDUs.

NOTE:

After all ports are configured as edge ports and BPDU filter ports in the system view, none of ports on the local device send BPDUs or negotiate the STP states with directly connected ports on the peer device. All ports are in Forwarding state. This may cause loops on the network, leading to broadcast storms. Exercise caution when deciding to perform this configuration.

After a specified port is configured as an edge port and BPDU filter port in the interface view, the port does not process or send BPDUs and cannot negotiate the STP state with the directly connected port on the peer device. Exercise caution when deciding to perform this configuration.

Procedure

  • Configuring all ports as edge ports and BPDU filter ports
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      stp edged-port default

      All ports are configured as edge ports.

      By default, all ports are non-edge ports.

    3. Run:

      stp bpdu-filter default

      All ports are configured as BPDU filter ports.

      By default, all ports are non-BPDU filter ports.

  • Configuring a specified port as an edge port and BPDU filter port
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      interface interface-type interface-number

      The view of an Ethernet interface that participates in spanning tree calculation is displayed.

    3. Run:

      stp edged-port enable

      The port is configured as an edge port.

      By default, all ports are non-edge ports.

    4. Run:

      stp bpdu-filter enable

      The port is configured as a BPDU filter port.

      By default, a port is a non-BPDU filter port.

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Updated: 2019-05-25

Document ID: EDOC1000097279

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