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Hierarchy Level


Use one of the available PIM EVPN gateway (PEG) designated forwarder (DF) election methods with optimized intersubnet multicast (OISM) for a virtual routing and forwarding (VRF) instance in an EVPN fabric.

Otherwise, if you don't enable PEG DF election, by default the OISM border devices you configure as PEG devices use native PIM DF election.


When PEG devices use PEG DF election, they don't use the PIM protocol (they don't exchange PIM protocol packets) within the data center. As a result, we recommend you have external L3 redundancy on the PEG devices.

All peer PEG devices must use the same DF election mechanism. As a result, if you enable PEG DF election, configure the same DF election method symmetrically on all peer PEG devices. If the configured PEG DF election methods don't match, the peer PEG devices all fall back to using the default mod-based PEG DF election method. If you enable PEG DF election on only some of the peer PEG devices, all of the devices fall back to using PIM-based DF election.


delay-time seconds

Time to wait (in seconds) before applying the selected method to elect a PEG DF.

  • Range: 1 through 1800


Use mod-based PEG DF election. This method is the default if you enable PEG DF election but don't specify this option or the preference option.

The remaining statements are explained separately. See CLI Explorer.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 23.4R1 and Junos OS Evolved Release 23.4R1.