I am investigating HW VTEP integration with OVN using Juniper QFX 5100/5120. This switch does not support source node replication for BUM traffic (broadcast, unknown unicast, multicast). As such it will use service node replication which sends the packet to one of the other OVN nodes to be replicated there.
My confusion here is when a OVN node receives this packets how does it know that it needs to replicate the packet to the other nodes as opposed just consuming it? Is there metadata on the packet which indicates that it should be replicated? Or does it check whether the packet was sent by the VTEP? Any pointers on how this mechanism works would be greatly appreciated. -Austin Juniper Business Use Only
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