EVPN-VXLAN: Selective Multicast Ethernet Tag (SMET)

Junos OS supports EVPN Type 6 (Selective Multicast Ethernet Tag [SMET]) routes in a centrally routed EVPN-VXLAN network. Selective multicast forwarding allows devices that support SMET to send multicast traffic only to the devices that are interested in receiving it. Devices with IGMP snooping configured default to selective multicast forwarding operation. This feature is supported on a noncollapsed spine-and-leaf topology with a mix of SMET supported and non-SMET supported devices. The leaf devices should not have an IRB configuration. Only the spine devices should have an IRB configuration.