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CloudEngine 12800 and 12800E V200R019C10 Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, M-LAG, VLAN, QinQ, VLAN mapping, GVRP, STP/RSTP, MSTP, VBST, ERPS (G.8032), LBDT, and Layer 2 protocol transparent transmission.

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Configuring the Device to Transparently Transmit BPDUs

Configuring the Device to Transparently Transmit BPDUs

Context

When the backbone edge device connects to many user edge devices, to improve efficiency in forwarding BPDUs, the backbone edge device forwards BPDUs through the hardware. By default, a Layer 2 interface is not allowed to forward BPDUs when the device forwards BPDUs through the hardware. User edge devices connected to the backbone edge device cannot communicate. A Layer 2 interface can be enabled to forward BPDUs when the device forwards BPDUs through the hardware.

To ensure that tagged BPDUs are forwarded by a Layer 2 interface and untagged BPDUs are sent to the CPU for processing, enable the device to forward only tagged BPDUs through the hardware.

Procedure

  • Configure the device to transparently transmit all BPDUs.
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The interface view is displayed.

    3. Run bpdu bridge enable

      A Layer 2 interface is enabled to forward BPDUs when the device forwards BPDUs through the hardware.

      By default, a Layer 2 interface is not allowed to forward BPDUs when the device forwards BPDUs through the hardware.

      To use the hardware to forward BPDUs of a protocol such as STP, disable this protocol before running the bpdu bridge enable command.

    4. Run commit

      The configuration is committed.

  • Configure the device to transparently transmit tagged BPDUs. (CE12800E that has the ED-E/EG-E/EGA-E series cards installed does not support this function.)
    1. Run system-view

      The system view is displayed.

    2. Run bpdu bridge tagged-packet enable

      A Layer 2 interface is enabled to forward tagged BPDUs when the device forwards BPDUs through the hardware.

      By default, a Layer 2 interface is not allowed to forward tagged BPDUs when the device forwards BPDUs through the hardware.

    3. Run commit

      The configuration is committed.

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Updated: 2021-04-01

Document ID: EDOC1100138135

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