Enabling IPv6 PIM passive mode

About IPv6 PIM passive mode

To guard against IPv6 PIM hello spoofing, you can enable IPv6 PIM passive mode on a receiver-side interface. The interface cannot receive or forward IPv6 PIM protocol messages (excluding register, register-stop and C-RP-Adv messages), and acts as the DR on the subnet. In IPv6 BIDIR-PIM, it also acts as the DF.

Restrictions and guidelines

This feature takes effect only when IPv6 PIM-DM or IPv6 PIM-SM is enabled on the interface.

To avoid duplicate multicast data transmission and flow loop, do not enable this feature on a shared-media LAN with multiple IPv6 PIM devices.

Procedure

  1. Enter system view.

    system-view

  2. Enter interface view.

    interface interface-type interface-number

  3. Enable IPv6 PIM passive mode on the interface.

    ipv6 pim passive

    By default, IPv6 PIM passive mode is disabled on an interface.