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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 SEP Multi-Instance

Configuring SEP Multi-Instance

Applicable Environment

In common SEP networking, a physical ring can be configured with only one SEP segment in which only one interface can be blocked. If an interface in a complete SEP segment is blocked, all service data is transmitted only along the path where the primary edge interface is located. The path where the secondary edge interface is located remains idle, wasting bandwidth.

Figure 13-14  Networking diagram for SEP multi-instance

SEP multi-instance is used to improve bandwidth efficiency and implement traffic load balancing and link backup. As shown in Figure 13-14, multiple instances are deployed in the SEP segment, and protected instances are mapped to different VLANs. Data traffic for different VLANs can then be transmitted along different paths.

NOTE:

Currently, SEP multi-instance allows two SEP segments to be configured on a physical ring. Different blocked interfaces and priorities need to be configured for the two SEP segments.

Pre-configuration Tasks

Before configuring SEP multi-instance, complete the following tasks:

  • Configuring basic SEP functions
  • Specifying an interface to block

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    stp region-configuration

    The MST region view is displayed.

  3. Run:

    instance instance-id vlan { vlan-id [ to vlan-id ] } &<1-10>

    Mappings between protected instances and VLANs are configured.

    The value of instance-id specified in this command must be the same as that of instance-id specified in the protected-instance command.

    Before you switch a VLAN from one SEP segment to another segment, shut down the blocked port. If you do not shut down the blocked port, a routing loop may occur after the VLAN switchover.

  4. Run:

    active region-configuration

    Mappings between protected instances and VLANs are activated.

    After mappings between protected instances and VLANs take effect, topology changes of a SEP segment affect only corresponding VLANs. This ensures reliable service data transmission.

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Updated: 2019-05-25

Document ID: EDOC1000097279

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