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NE20E-S2 V800R010C10SPC500 Configuration Guide - LAN Access and MAN Access 01

This is NE20E-S2 V800R010C10SPC500 Configuration Guide - LAN Access and MAN Access
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Configuring a Proposal/Agreement Mechanism

Configuring a Proposal/Agreement Mechanism

To enable Huawei Datacom devices to communicate with non-Huawei devices, configure a proper rapid transition mechanism on Huawei devices according to the Proposal/Agreement mechanism on non-Huawei devices.

Context

The rapid transition mechanism is also called the Proposal/Agreement mechanism. Switching devices currently support the following modes:

  • Enhanced mode: The current interface counts a root port when it computes the synchronization flag bit.
    • An upstream device sends a Proposal message to a downstream device, requesting rapid status transition. After receiving the message, the downstream device sets the port connected to the upstream device as a root port and blocks all non-edge ports.

    • The upstream device then sends an Agreement message to the downstream device. After the downstream device receives the message, the root port transitions to the Forwarding state.

    • The downstream device then responds to the Proposal message with an Agreement message. After receiving the message, the upstream device sets the port connected to the downstream device as a designated port, and the designated port transitions to the Forwarding state.

  • Common mode: The current interface ignores the root port when it computes the synchronization flag bit.
    • An upstream device sends a Proposal message to a downstream device, requesting rapid status transition. After receiving the message, the downstream device sets the port connected to the upstream device as a root port and blocks all non-edge ports. The root port then transitions to the Forwarding state.

    • The downstream device responds to the Proposal message with an Agreement message. After receiving the message, the upstream device sets the port connected to the downstream device as a designated port. The designated port then transitions to the Forwarding state.

When Huawei Datacom devices are interworking with non-Huawei devices, select either mode depending on the Proposal/Agreement mechanism on non-Huawei devices.

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.

    NOTE:
    The following configurations can be configured both on a Layer 2 interface and a Layer 3 interface.

  3. (Optional) Run stp binding process process-id

    The interface is bound to an MSTP process.

    NOTE:

    This step binds an interface to an MSTP process with a non-zero ID. If the interface belongs to process 0, skip this step.

  4. Run stp no-agreement-check

    The common rapid transition mechanism is configured.

  5. Run commit

    The configuration is committed.

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Updated: 2019-01-02

Document ID: EDOC1100055378

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