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Configuration Guide - Reliability

S9300, S9300E, and S9300X V200R013C00

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 BFD and a Card

Configuring Association Between BFD and a Card


After VRRP is enabled on a switch used as the aggregation device and gateway, VRRP Advertisement packets are forwarded through a Layer 2 switch at the access layer. To improve the VRRP switching performance, associate VRRP with BFD. In this case, BFD packets are also forwarded through a Layer 2 switch at the access layer.

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 set, the BFD session immediately goes Down, triggering the VRRP active/standby switchover. The switching performance is therefore improved.


The S9306 and S9312 support this command only when the MPU is equipped with the LE0MFSUA.

The S9306E and S9312E support this command only when the MPU is LH2D2SRUDC00/LE2D2SRUDC01.


  1. Run system-view

    The system view is displayed.

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

    BFD is associated with a card.

    By default, BFD is not associated with a card.

Updated: 2019-04-09

Document ID: EDOC1100065868

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