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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 a VRRP Group and Binding the VRRP Group to an mVRRP Group

Configuring a VRRP Group and Binding the VRRP Group to an mVRRP Group


You can bind VRRP groups to an mVRRP group so that mVRRP determines the status of the bound VRRP groups.


  1. Run:

    The system view is displayed.

  2. Run:
    interface interface-type interface-number

    The view of the interface where a VRRP group is configured 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.


    Only the S5720HI, S5720EI, S6720EI, and S6720S-EI support switching between Layer 2 and Layer 3 modes.

  4. Run:
    vrrp vrid virtual-router-id virtual-ip virtual-address

    A VRRP group is created, and a virtual IP address is assigned to the VRRP group.

    By default, no VRRP group is created.

    Because the mVRRP group determines the status of its member VRRP groups, you do not need to set priorities for the member VRRP groups.

  5. Run:
    vrrp vrid virtual-router-id1 track admin-vrrp interface interface-type interface-number vrid virtual-router-id2 unflowdown

    The VRRP group is bound to an mVRRP group. A VRRP group can be bound to only one mVRRP group.

    By default, no VRRP group is bound to an mVRRP group.

    After the binding is complete, the state machine of the bound VRRP group depends on the status of the mVRRP group. That is, the bound VRRP group inherits the status of the mVRRP group, deletes its VRRP Advertisement packet timeout timer, and stops sending or receiving VRRP Advertisement packets. A VRRP group can be bound to only one mVRRP group.


    After a VRRP group is bound to an mVRRP group, VRRP Advertisement packets are not sent periodically. MAC addresses are updated based on ARP Reply packets for gratuitous ARP or from a gateway.

Updated: 2019-12-28

Document ID: EDOC1000141941

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