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Configuration Guide - Reliability

S1720, S2700, S5700, and S6720 V200R010C00

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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Configuring Smart Link to Notify the VPLS/VLL Module of Link Switching Events

Configuring Smart Link to Notify the VPLS/VLL Module of Link Switching Events

Pre-configuration Tasks

When Smart Link is used on a VPLS/VLL network, you can configure Smart Link to notify the VPLS/VLL module of link switching events so that the VPLS/VLL module can rapidly detect link switching events to minimize data packet loss.

NOTE:

Only the S5720HI, S6720EI, S6720S-EI, and S5720EI support this function.

Before configuring Smart Link to notify the VPLS/VLL module of link switching events, configure basic functions of Smart Link.

Context

In Figure 6-16, CE-A is dual-homed to the VPLS/VLL network through VLANIF interfaces or Dot1q termination sub-interfaces of the PEs. You can associate Smart Link with VPLS/VLL on the corresponding physical interfaces of PEs. The interfaces can then notify the VPLS/VLL module after receiving a Flush packet. After receiving the notification, the VPLS/VLL module clears the MAC addresses in the VSI/VLL bound to the VLANIF interface and sends messages to remote devices, prompting them to update MAC address entries.

NOTE:

You can associate Smart Link with VPLS/VLL only when CE-A is connected to the VPLS/VLL network through VLANIF interfaces or Dot1q sub-interfaces of the PEs.

Figure 6-16  Example of link switching notification to the VPLS/VLL module

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    interface interface-type interface-number

    The interface view is displayed.

  3. Run:

    smart-link { vpls-notify | vll-notify } enable

    The interface is enabled to notify the VPLS/VLL module after receiving a Flush packet.

    By default, an interface does not notify the VPLS/VLL module after receiving a Flush packet.

Checking the Configuration

Run the display this command on a PE interface connected to CE-A to check whether the interface is enabled to notify the VPLS/VLL module after receiving Flush packets.

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Updated: 2019-04-18

Document ID: EDOC1000141941

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