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S12700 V200R010C00 Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.
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(Optional) Configuring the MEL Value

(Optional) Configuring the MEL Value

Context

On a Layer 2 network running ERPS, if another fault detection protocol (for example, CFM) is enabled, the MEL field in RAPS PDUs determines whether the RAPS PDUs can be forwarded. If the MEL value in an ERPS ring is smaller than the MEL value of the fault detection protocol, the RAPS PDUs have a lower priority and are discarded. If the MEL value in an ERPS ring is larger than the MEL value of the fault detection protocol, the RAPS PDUs can be forwarded. In addition, the MEL value can also be used for interworking with other vendors' devices in an ERPS ring. The same MEL value ensures smooth communication between devices.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    erps ring ring-id

    The ERPS ring view is displayed.

  3. Run:

    raps-mel level-id

    The MEL value in the ERPS ring is set.

    By default, the MEL value in RAPS PDUs is 7.

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Updated: 2019-08-21

Document ID: EDOC1000142081

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