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S12700 V200R013C00 Configuration Guide - Reliability

This document describes the configurations of Reliability, including BFD Configuration, VRRP Configuration, NSR Configuration, DLDP Configuration, Smart Link and Monitor Link Configuration, MAC Swap Loopback Configuration, EFM Configuration, CFM Configuration, Y.1731 Configuration.
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Configuring Association Between VRRP and a Card

Configuring Association Between VRRP and a Card


If uplink outbound interfaces of a VRRP group are located on the same card, the card reset may cause a failure to forward user traffic because there is no outbound interface. In this situation, a VRRP active/standby switchover must be performed. The link monitored by BFD is normal and the BFD session does not go Down, so the millisecond-level switching performance cannot be ensured. After a BFD session is associated with a card and the card is reset, the BFD session immediately goes Down, triggering a VRRP active/standby switchover. The switching performance is therefore improved.

Assume that a switch is the master of VRRP group 1 and backup of VRRP group 2 in VRRP load balancing scenarios. When the BFD session goes Down, a backup assumes the master role in VRRP groups 1 and 2 and sends VRRP Advertisement packets and gratuitous ARP packets, affecting packet forwarding on the Layer 2 switch at the access layer. The traffic from users to the network is forwarded to the new master of a VRRP group, but the card of the new master cannot forward traffic. Consequently, user packets are discarded.

After VRRP is associated with a card and the card is reset, the switch is disabled from sending VRRP Advertisement packets and gratuitous ARP packets, preventing incorrect VRRP active/standby switchover.


The device supports this command only when the MPU is ET1D2MPUA000 or ET1D2MPUDC00.


  1. Run system-view

    The system view is displayed.

  2. Run vrrp track slot slot-id [ interval second-time ]

    VRRP is associated with a card.

    By default, VRRP is not associated with a card.

Updated: 2019-04-08

Document ID: EDOC1100065654

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