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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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Adding a Layer 2 Interface to a SEP Segment and Configuring a Role for the Interface

Adding a Layer 2 Interface to a SEP Segment and Configuring a Role for the Interface

Context

To ensure that SEP packets are forwarded correctly in a SEP segment, add Layer 2 interfaces to the SEP segment and configure different roles for the interfaces.

After an interface is added to a SEP segment, the interface sets its interface role to the primary edge interface if the interface has the right to participate in primary edge interface election. Then, the interface periodically sends a primary edge interface election packet without waiting for the success of neighbor negotiations.

A primary edge interface election packet contains the interface role (primary edge interface, secondary edge interface, or common interface), bridge MAC address of the interface, interface ID, and integrity of the topology database.

Table 13-10 lists interface roles.
Table 13-10  Interface roles

Interface Role

Sub-role

Description

Deployment Scenario

Common interface

-

In a SEP segment, all interfaces except edge interfaces and blocked interfaces are common interfaces.

A common interface monitors the status of the directly-connected SEP link. When the link status changes, the interface sends a topology change notification message to notify its neighbors. Then the topology change notification message is flooded on the link until it finally reaches the primary edge interface. The primary edge interface determines how to process the link change.

-

Edge interface

Primary edge interface

A SEP segment has only one primary edge interface, which is determined by the configuration and election.

The primary edge interface initiates blocked interface preemption, terminates packets, and sends topology change notification messages to other networks.

Open-ring networking

Closed-ring networking

Multi-ring networking

Secondary edge interface

A SEP segment has only one secondary edge interface, which is determined by the configuration and election.

The secondary edge interface terminates packets and sends topology change notification messages to other networks.

No-neighbor primary edge interface

An interface at the edge of a SEP segment is a no-neighbor edge interface, which is determined by the configuration and election.

The no-neighbor primary edge interface terminates packets and sends topology change notification messages to other networks.

No-neighbor primary edge interfaces are used to interconnect Huawei devices and non-Huawei devices or interconnect Huawei devices and devices that do not support SEP.

Hybrid SEP+MSTP ring networking

No-neighbor secondary edge interface

The no-neighbor secondary edge interface terminates packets and sends topology change notification messages to other networks.

No-neighbor secondary edge interfaces are used to interconnect Huawei devices and non-Huawei devices or interconnect Huawei devices and devices that do not support SEP.

NOTE:
  • Normally, edge interfaces and no-neighbor edge interfaces belong to different SEP segments.

  • Before adding a Layer 2 interface to a SEP segment, ensure that STP has been disabled on the interface (except that the interface is a no-neighbor edge interface).

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    interface interface-type interface-number

    The view of an Ethernet interface added to the SEP segment is displayed.

  3. (Optional) Run:

    stp disable

    STP is disabled on the interface.

  4. Run:

    sep segment segment-id [ edge [ no-neighbor ] { primary | secondary } ]

    The Ethernet interface is added to a specified SEP segment and a role is configured for the interface.

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Updated: 2019-05-25

Document ID: EDOC1000097279

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