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Configuration Guide - Reliability

S7700 and S9700 V200R011C10

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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(Optional) Setting the EFM Working Mode on an Interface

(Optional) Setting the EFM Working Mode on an Interface

Context

EFM supports two connection modes: active and passive. Table 8-10 describes capabilities for processing OAMPDUs supported by these modes.

Table 8-10  Capabilities for processing OAMPDUs in active and passive modes

Action

Active Mode

Passive Mode

Initiate a connection request by sending an Information OAMPDU during the discovery process

Supported

Not supported

Respond to a connection request during the discovery process

Supported

Supported

Send Information OAMPDUs

Supported

Supported

Send Event Notification OAMPDUs

Supported

Supported

Send Loopback Control OAMPDUs

Supported

Not supported

Respond to Loopback Control OAMPDUs

Supported (The remote EFM entity must work in active mode.)

Supported

EFM can be configured on Layer 2 and Layer 3 Ethernet interfaces. By default, an Ethernet interface works in Layer 2 mode. Before configuring EFM on a Layer 3 Ethernet interface, switch the Ethernet interface to Layer 3 mode.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The view of the interface at one end of the link is displayed.

  3. (Optional) On an Ethernet interface, run undo portswitch

    The interface is switched to Layer 3 mode.

    By default, an Ethernet interface works in Layer 2 mode.

  4. Run efm mode { active | passive }

    The EFM working mode on the interface is configured.

    By default, EFM on an interface works in active mode.

    NOTE:
    • The EFM working mode can be set on an interface only after EFM is enabled globally and before EFM is enabled on the interface. The EFM working mode on an interface cannot be changed after EFM is enabled on the interface.

    • When using EFM to monitor a link, ensure that either of the interfaces at both ends of the link operates in active mode.
      • If both ends of a link are configured to work in active EFM mode, link detection can be implemented.

      • If both ends of a link are configured to work in passive mode, link detection cannot be implemented.

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Updated: 2019-10-18

N. documento: EDOC1000178318

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