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
Enter system view.
system-view
Enter interface view.
interface interface-type interface-number
Enable IPv6 PIM passive mode on the interface.
ipv6 pim passive
By default, IPv6 PIM passive mode is disabled on an interface.